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<SAMPLE_SET>
    <SAMPLE alias="DRS037495" center_name="PKU" accession="DRS037495">
        <IDENTIFIERS>
            <PRIMARY_ID label="BioSample ID">SAMD00023569</PRIMARY_ID>
        </IDENTIFIERS>
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            <TAXON_ID>885331</TAXON_ID>
            <SCIENTIFIC_NAME>oil production facility metagenome</SCIENTIFIC_NAME>
        </SAMPLE_NAME>
        <SAMPLE_ATTRIBUTES>
            <SAMPLE_ATTRIBUTE>
                <TAG>collection_date</TAG>
                <VALUE>2009-08-10</VALUE>
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                <TAG>permeability</TAG>
                <VALUE>628.17md</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>project_name</TAG>
                <VALUE>Bacterial communities in water flooding oil reservoirs of China</VALUE>
            </SAMPLE_ATTRIBUTE>
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                <TAG>lat_lon</TAG>
                <VALUE>122.0787 E 41.1252 N</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>sample_name</TAG>
                <VALUE>A12J63-115</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>env_feature</TAG>
                <VALUE>production water before field test</VALUE>
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                <TAG>sample_title</TAG>
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            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>water_temp_regm</TAG>
                <VALUE>70??C</VALUE>
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                <TAG>description</TAG>
                <VALUE>production well</VALUE>
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                <VALUE>PRJDB3328</VALUE>
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                <TAG>env_material</TAG>
                <VALUE>production water</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>org_carb</TAG>
                <VALUE>5682.00mg/L</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>env_biome</TAG>
                <VALUE>oil field</VALUE>
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                <TAG>samp_salinity</TAG>
                <VALUE>1041.22mg/L</VALUE>
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                <TAG>porosity</TAG>
                <VALUE>0.21</VALUE>
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                <TAG>depth</TAG>
                <VALUE>1652-2176m</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>ph</TAG>
                <VALUE>7.5</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>geo_loc_name</TAG>
                <VALUE>China: An12 block,Liaohe oil field</VALUE>
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        <IDENTIFIERS>
            <PRIMARY_ID label="BioSample ID">SAMD00023570</PRIMARY_ID>
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            <TAXON_ID>885331</TAXON_ID>
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                <VALUE>injection water before field test</VALUE>
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                <VALUE>injection well</VALUE>
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                <TAG>env_material</TAG>
                <VALUE>injection water</VALUE>
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                <TAG>org_carb</TAG>
                <VALUE>7422.00mg/L</VALUE>
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                <TAG>env_biome</TAG>
                <VALUE>oil field</VALUE>
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                <TAG>samp_salinity</TAG>
                <VALUE>978.14mg/L</VALUE>
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                <TAG>ph</TAG>
                <VALUE>7.5</VALUE>
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                <TAG>geo_loc_name</TAG>
                <VALUE>China: An12 block,Liaohe oil field</VALUE>
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    <SAMPLE alias="DRS037497" center_name="PKU" accession="DRS037497">
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            <PRIMARY_ID label="BioSample ID">SAMD00023571</PRIMARY_ID>
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            <TAXON_ID>885331</TAXON_ID>
            <SCIENTIFIC_NAME>oil production facility metagenome</SCIENTIFIC_NAME>
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                <VALUE>628.17md</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>project_name</TAG>
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                <VALUE>122.0787 E 41.1252 N</VALUE>
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                <TAG>sample_name</TAG>
                <VALUE>A12J63-515</VALUE>
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                <VALUE>9240.00mg/L</VALUE>
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                <TAG>env_biome</TAG>
                <VALUE>oil field</VALUE>
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                <TAG>samp_salinity</TAG>
                <VALUE>1065.39mg/L</VALUE>
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                <TAG>porosity</TAG>
                <VALUE>0.21</VALUE>
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                <TAG>depth</TAG>
                <VALUE>1652-2176m</VALUE>
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                <VALUE>7.5</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>geo_loc_name</TAG>
                <VALUE>China: An12 block,Liaohe oil field</VALUE>
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    <SAMPLE alias="DRS037498" center_name="PKU" accession="DRS037498">
        <IDENTIFIERS>
            <PRIMARY_ID label="BioSample ID">SAMD00023572</PRIMARY_ID>
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            <TAXON_ID>885331</TAXON_ID>
            <SCIENTIFIC_NAME>oil production facility metagenome</SCIENTIFIC_NAME>
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                <TAG>collection_date</TAG>
                <VALUE>2009-08-10</VALUE>
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                <VALUE>628.17md</VALUE>
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                <TAG>project_name</TAG>
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                <VALUE>122.0787 E 41.1252 N</VALUE>
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                <VALUE>A12J64-016</VALUE>
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                <VALUE>production water before field test</VALUE>
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                <VALUE>70??C</VALUE>
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                <VALUE>4865.00mg/L</VALUE>
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                <VALUE>837.84mg/L</VALUE>
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                <TAG>porosity</TAG>
                <VALUE>0.21</VALUE>
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                <VALUE>7.5</VALUE>
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                <VALUE>China: An12 block,Liaohe oil field</VALUE>
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            <PRIMARY_ID label="BioSample ID">SAMD00023573</PRIMARY_ID>
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            <TAXON_ID>885331</TAXON_ID>
            <SCIENTIFIC_NAME>oil production facility metagenome</SCIENTIFIC_NAME>
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                <VALUE>628.17md</VALUE>
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                <VALUE>122.0787 E 41.1252 N</VALUE>
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                <VALUE>A12J64-018</VALUE>
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                <VALUE>production water before field test</VALUE>
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                <VALUE>A12J64-018</VALUE>
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                <VALUE>70??C</VALUE>
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            <PRIMARY_ID label="BioSample ID">SAMD00023574</PRIMARY_ID>
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                <VALUE>58.4??C</VALUE>
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                <TAG>depth</TAG>
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                <VALUE>8.53</VALUE>
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                <VALUE>China: Ba19 block,Huabei oil field</VALUE>
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            <PRIMARY_ID label="BioSample ID">SAMD00023576</PRIMARY_ID>
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                <VALUE>699.09md</VALUE>
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            <TAXON_ID>885331</TAXON_ID>
            <SCIENTIFIC_NAME>oil production facility metagenome</SCIENTIFIC_NAME>
        </SAMPLE_NAME>
        <SAMPLE_ATTRIBUTES>
            <SAMPLE_ATTRIBUTE>
                <TAG>collection_date</TAG>
                <VALUE>2009-12-03</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
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                <VALUE>699.09md</VALUE>
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            <SAMPLE_ATTRIBUTE>
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                <VALUE>Bacterial communities in water flooding oil reservoirs of China</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>lat_lon</TAG>
                <VALUE>116.9651 E 45.5078 N</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>sample_name</TAG>
                <VALUE>B18-37</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>env_feature</TAG>
                <VALUE>production water before field test</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>sample_title</TAG>
                <VALUE>B18-37</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>water_temp_regm</TAG>
                <VALUE>58.4??C</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>description</TAG>
                <VALUE>production well</VALUE>
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            <SAMPLE_ATTRIBUTE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>env_material</TAG>
                <VALUE>production water</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>org_carb</TAG>
                <VALUE>146.50mg/L</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>env_biome</TAG>
                <VALUE>oil field</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>samp_salinity</TAG>
                <VALUE>1578.78mg/L</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>porosity</TAG>
                <VALUE>0.19</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>depth</TAG>
                <VALUE>1446-1539m</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>ph</TAG>
                <VALUE>9.04</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>geo_loc_name</TAG>
                <VALUE>China: Ba19 block,Huabei oil field</VALUE>
            </SAMPLE_ATTRIBUTE>
        </SAMPLE_ATTRIBUTES>
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        <IDENTIFIERS>
            <PRIMARY_ID label="BioSample ID">SAMD00023578</PRIMARY_ID>
        </IDENTIFIERS>
        <SAMPLE_NAME>
            <TAXON_ID>885331</TAXON_ID>
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                <TAG>lat_lon</TAG>
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            <SAMPLE_ATTRIBUTE>
                <TAG>sample_name</TAG>
                <VALUE>B18-43</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>env_feature</TAG>
                <VALUE>production water before field test</VALUE>
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                <VALUE>B18-43</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>water_temp_regm</TAG>
                <VALUE>58.4??C</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>description</TAG>
                <VALUE>production well</VALUE>
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            <SAMPLE_ATTRIBUTE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>env_material</TAG>
                <VALUE>production water</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>org_carb</TAG>
                <VALUE>157.00mg/L</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>env_biome</TAG>
                <VALUE>oil field</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>samp_salinity</TAG>
                <VALUE>1458.82mg/L</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>porosity</TAG>
                <VALUE>0.19</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>depth</TAG>
                <VALUE>1446-1539m</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>ph</TAG>
                <VALUE>9.26</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>geo_loc_name</TAG>
                <VALUE>China: Ba19 block,Huabei oil field</VALUE>
            </SAMPLE_ATTRIBUTE>
        </SAMPLE_ATTRIBUTES>
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        <IDENTIFIERS>
            <PRIMARY_ID label="BioSample ID">SAMD00023579</PRIMARY_ID>
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        <SAMPLE_NAME>
            <TAXON_ID>885331</TAXON_ID>
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                <VALUE>116.9651 E 45.5078 N</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>sample_name</TAG>
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            <SAMPLE_ATTRIBUTE>
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                <VALUE>production water before field test</VALUE>
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            <SAMPLE_ATTRIBUTE>
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                <VALUE>58.4??C</VALUE>
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            <SAMPLE_ATTRIBUTE>
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                <VALUE>production well</VALUE>
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            <SAMPLE_ATTRIBUTE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>env_material</TAG>
                <VALUE>production water</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>org_carb</TAG>
                <VALUE>100.60mg/L</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>env_biome</TAG>
                <VALUE>oil field</VALUE>
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                <TAG>samp_salinity</TAG>
                <VALUE>1405.76mg/L</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>porosity</TAG>
                <VALUE>0.19</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>depth</TAG>
                <VALUE>1446-1539m</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>ph</TAG>
                <VALUE>9.11</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>geo_loc_name</TAG>
                <VALUE>China: Ba19 block,Huabei oil field</VALUE>
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        <IDENTIFIERS>
            <PRIMARY_ID label="BioSample ID">SAMD00023580</PRIMARY_ID>
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                <VALUE>116.9651 E 45.5078 N</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>sample_name</TAG>
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            <SAMPLE_ATTRIBUTE>
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                <VALUE>58.4??C</VALUE>
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                <VALUE>111.20mg/L</VALUE>
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            <SAMPLE_ATTRIBUTE>
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                <VALUE>1600.07mg/L</VALUE>
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                <VALUE>0.19</VALUE>
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                <VALUE>1446-1539m</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>ph</TAG>
                <VALUE>8.44</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>geo_loc_name</TAG>
                <VALUE>China: Ba19 block,Huabei oil field</VALUE>
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        <IDENTIFIERS>
            <PRIMARY_ID label="BioSample ID">SAMD00023581</PRIMARY_ID>
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            <TAXON_ID>885331</TAXON_ID>
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                <VALUE>116.9651 E 45.5078 N</VALUE>
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                <TAG>sample_name</TAG>
                <VALUE>B18-52</VALUE>
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                <VALUE>58.4??C</VALUE>
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                <VALUE>0.19</VALUE>
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                <VALUE>1446-1539m</VALUE>
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                <TAG>ph</TAG>
                <VALUE>8.31</VALUE>
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                <VALUE>China: Ba19 block,Huabei oil field</VALUE>
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                <VALUE>8.44</VALUE>
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                <VALUE>117.4962 E 38.7302 N</VALUE>
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                <VALUE>8.21</VALUE>
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                <VALUE>D7-14-1</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>env_feature</TAG>
                <VALUE>production water before field test</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>sample_title</TAG>
                <VALUE>D7-14-1</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>water_temp_regm</TAG>
                <VALUE>58??C</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>description</TAG>
                <VALUE>production well</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>bioproject_id</TAG>
                <VALUE>PRJDB3328</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>env_material</TAG>
                <VALUE>production water</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>org_carb</TAG>
                <VALUE>52.58mg/L</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>env_biome</TAG>
                <VALUE>oil field</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>samp_salinity</TAG>
                <VALUE>4649.99mg/L</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>porosity</TAG>
                <VALUE>0.33</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>depth</TAG>
                <VALUE>1563.3-1632m</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>ph</TAG>
                <VALUE>7.91</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>geo_loc_name</TAG>
                <VALUE>China: Yangerzhuang block,Dagang oil field</VALUE>
            </SAMPLE_ATTRIBUTE>
        </SAMPLE_ATTRIBUTES>
    </SAMPLE>
    <SAMPLE alias="DRS037512" center_name="PKU" accession="DRS037512">
        <IDENTIFIERS>
            <PRIMARY_ID label="BioSample ID">SAMD00023586</PRIMARY_ID>
        </IDENTIFIERS>
        <SAMPLE_NAME>
            <TAXON_ID>885331</TAXON_ID>
            <SCIENTIFIC_NAME>oil production facility metagenome</SCIENTIFIC_NAME>
        </SAMPLE_NAME>
        <SAMPLE_ATTRIBUTES>
            <SAMPLE_ATTRIBUTE>
                <TAG>collection_date</TAG>
                <VALUE>2010-05-21</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>permeability</TAG>
                <VALUE>3795.34md</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>project_name</TAG>
                <VALUE>Bacterial communities in water flooding oil reservoirs of China</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>lat_lon</TAG>
                <VALUE>117.4962 E 38.7302 N</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>sample_name</TAG>
                <VALUE>D7-17KB</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>env_feature</TAG>
                <VALUE>production water before field test</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>sample_title</TAG>
                <VALUE>D7-17KB</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>water_temp_regm</TAG>
                <VALUE>58??C</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>description</TAG>
                <VALUE>production well</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>bioproject_id</TAG>
                <VALUE>PRJDB3328</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>env_material</TAG>
                <VALUE>production water</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>org_carb</TAG>
                <VALUE>65.37mg/L</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>env_biome</TAG>
                <VALUE>oil field</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>samp_salinity</TAG>
                <VALUE>1978.77mg/L</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>porosity</TAG>
                <VALUE>0.33</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>depth</TAG>
                <VALUE>1563.3-1632m</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>ph</TAG>
                <VALUE>8.08</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>geo_loc_name</TAG>
                <VALUE>China: Yangerzhuang block,Dagang oil field</VALUE>
            </SAMPLE_ATTRIBUTE>
        </SAMPLE_ATTRIBUTES>
    </SAMPLE>
    <SAMPLE alias="DRS037513" center_name="PKU" accession="DRS037513">
        <IDENTIFIERS>
            <PRIMARY_ID label="BioSample ID">SAMD00023587</PRIMARY_ID>
        </IDENTIFIERS>
        <SAMPLE_NAME>
            <TAXON_ID>885331</TAXON_ID>
            <SCIENTIFIC_NAME>oil production facility metagenome</SCIENTIFIC_NAME>
        </SAMPLE_NAME>
        <SAMPLE_ATTRIBUTES>
            <SAMPLE_ATTRIBUTE>
                <TAG>collection_date</TAG>
                <VALUE>2010-05-21</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>permeability</TAG>
                <VALUE>3795.34md</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>project_name</TAG>
                <VALUE>Bacterial communities in water flooding oil reservoirs of China</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>lat_lon</TAG>
                <VALUE>117.4962 E 38.7302 N</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>sample_name</TAG>
                <VALUE>DB7-17-3</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>env_feature</TAG>
                <VALUE>production water before field test</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>sample_title</TAG>
                <VALUE>DB7-17-3</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>water_temp_regm</TAG>
                <VALUE>58??C</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>description</TAG>
                <VALUE>production well</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>bioproject_id</TAG>
                <VALUE>PRJDB3328</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>env_material</TAG>
                <VALUE>production water</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>org_carb</TAG>
                <VALUE>46.78mg/L</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>env_biome</TAG>
                <VALUE>oil field</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>samp_salinity</TAG>
                <VALUE>3256.49mg/L</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>porosity</TAG>
                <VALUE>0.33</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>depth</TAG>
                <VALUE>1563.3-1632m</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>ph</TAG>
                <VALUE>7.62</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>geo_loc_name</TAG>
                <VALUE>China: Yangerzhuang block,Dagang oil field</VALUE>
            </SAMPLE_ATTRIBUTE>
        </SAMPLE_ATTRIBUTES>
    </SAMPLE>
    <SAMPLE alias="DRS037514" center_name="PKU" accession="DRS037514">
        <IDENTIFIERS>
            <PRIMARY_ID label="BioSample ID">SAMD00023588</PRIMARY_ID>
        </IDENTIFIERS>
        <SAMPLE_NAME>
            <TAXON_ID>885331</TAXON_ID>
            <SCIENTIFIC_NAME>oil production facility metagenome</SCIENTIFIC_NAME>
        </SAMPLE_NAME>
        <SAMPLE_ATTRIBUTES>
            <SAMPLE_ATTRIBUTE>
                <TAG>collection_date</TAG>
                <VALUE>2009-12-03</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>permeability</TAG>
                <VALUE>688.96md</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>project_name</TAG>
                <VALUE>Bacterial communities in water flooding oil reservoirs of China</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>lat_lon</TAG>
                <VALUE>115.4003 E 42.5628 N</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>sample_name</TAG>
                <VALUE>M-J1</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>env_feature</TAG>
                <VALUE>production water before field test</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>sample_title</TAG>
                <VALUE>M-J1</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>water_temp_regm</TAG>
                <VALUE>37??C</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>description</TAG>
                <VALUE>production well</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>bioproject_id</TAG>
                <VALUE>PRJDB3328</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>env_material</TAG>
                <VALUE>production water</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>org_carb</TAG>
                <VALUE>120.27mg/L</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>env_biome</TAG>
                <VALUE>oil field</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>samp_salinity</TAG>
                <VALUE>1301.00mg/L</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>porosity</TAG>
                <VALUE>0.22</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>depth</TAG>
                <VALUE>790-830m</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>ph</TAG>
                <VALUE>8.38</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>geo_loc_name</TAG>
                <VALUE>China: Menggulin block,Huabei oil field</VALUE>
            </SAMPLE_ATTRIBUTE>
        </SAMPLE_ATTRIBUTES>
    </SAMPLE>
    <SAMPLE alias="DRS037515" center_name="PKU" accession="DRS037515">
        <IDENTIFIERS>
            <PRIMARY_ID label="BioSample ID">SAMD00023589</PRIMARY_ID>
        </IDENTIFIERS>
        <SAMPLE_NAME>
            <TAXON_ID>885331</TAXON_ID>
            <SCIENTIFIC_NAME>oil production facility metagenome</SCIENTIFIC_NAME>
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        <SAMPLE_ATTRIBUTES>
            <SAMPLE_ATTRIBUTE>
                <TAG>collection_date</TAG>
                <VALUE>2009-12-03</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>permeability</TAG>
                <VALUE>688.96md</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>project_name</TAG>
                <VALUE>Bacterial communities in water flooding oil reservoirs of China</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>lat_lon</TAG>
                <VALUE>115.4003 E 42.5628 N</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>sample_name</TAG>
                <VALUE>M14-8</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>env_feature</TAG>
                <VALUE>production water before field test</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>sample_title</TAG>
                <VALUE>M14-8</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>water_temp_regm</TAG>
                <VALUE>37??C</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>description</TAG>
                <VALUE>production well</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>bioproject_id</TAG>
                <VALUE>PRJDB3328</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>env_material</TAG>
                <VALUE>production water</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>org_carb</TAG>
                <VALUE>106.90mg/L</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>env_biome</TAG>
                <VALUE>oil field</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>samp_salinity</TAG>
                <VALUE>1447.16mg/L</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>porosity</TAG>
                <VALUE>0.22</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>depth</TAG>
                <VALUE>790-830m</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>ph</TAG>
                <VALUE>8.66</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>geo_loc_name</TAG>
                <VALUE>China: Menggulin block,Huabei oil field</VALUE>
            </SAMPLE_ATTRIBUTE>
        </SAMPLE_ATTRIBUTES>
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    <SAMPLE alias="DRS037516" center_name="PKU" accession="DRS037516">
        <IDENTIFIERS>
            <PRIMARY_ID label="BioSample ID">SAMD00023590</PRIMARY_ID>
        </IDENTIFIERS>
        <SAMPLE_NAME>
            <TAXON_ID>885331</TAXON_ID>
            <SCIENTIFIC_NAME>oil production facility metagenome</SCIENTIFIC_NAME>
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        <SAMPLE_ATTRIBUTES>
            <SAMPLE_ATTRIBUTE>
                <TAG>collection_date</TAG>
                <VALUE>2009-12-03</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>permeability</TAG>
                <VALUE>688.96md</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>project_name</TAG>
                <VALUE>Bacterial communities in water flooding oil reservoirs of China</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>lat_lon</TAG>
                <VALUE>115.4003 E 42.5628 N</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>sample_name</TAG>
                <VALUE>M15-10</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>env_feature</TAG>
                <VALUE>production water before field test</VALUE>
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                <TAG>sample_title</TAG>
                <VALUE>M15-10</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>water_temp_regm</TAG>
                <VALUE>37??C</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>description</TAG>
                <VALUE>production well</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>bioproject_id</TAG>
                <VALUE>PRJDB3328</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>env_material</TAG>
                <VALUE>production water</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>org_carb</TAG>
                <VALUE>135.80mg/L</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>env_biome</TAG>
                <VALUE>oil field</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>samp_salinity</TAG>
                <VALUE>1082.89mg/L</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>porosity</TAG>
                <VALUE>0.22</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>depth</TAG>
                <VALUE>790-830m</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>ph</TAG>
                <VALUE>8.24</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>geo_loc_name</TAG>
                <VALUE>China: Menggulin block,Huabei oil field</VALUE>
            </SAMPLE_ATTRIBUTE>
        </SAMPLE_ATTRIBUTES>
    </SAMPLE>
    <SAMPLE alias="DRS037517" center_name="PKU" accession="DRS037517">
        <IDENTIFIERS>
            <PRIMARY_ID label="BioSample ID">SAMD00023591</PRIMARY_ID>
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        <SAMPLE_NAME>
            <TAXON_ID>885331</TAXON_ID>
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            <SAMPLE_ATTRIBUTE>
                <TAG>collection_date</TAG>
                <VALUE>2009-12-03</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>project_name</TAG>
                <VALUE>Bacterial communities in water flooding oil reservoirs of China</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>lat_lon</TAG>
                <VALUE>115.4003 E 42.5628 N</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>sample_name</TAG>
                <VALUE>M16-10W</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>env_feature</TAG>
                <VALUE>injection water before field test</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>sample_title</TAG>
                <VALUE>M16-10W</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>description</TAG>
                <VALUE>injection well</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>bioproject_id</TAG>
                <VALUE>PRJDB3328</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>env_material</TAG>
                <VALUE>injection water</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>org_carb</TAG>
                <VALUE>52.66mg/L</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>env_biome</TAG>
                <VALUE>oil field</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>samp_salinity</TAG>
                <VALUE>1004.08mg/L</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>ph</TAG>
                <VALUE>8.63</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>geo_loc_name</TAG>
                <VALUE>China: Menggulin block,Huabei oil field</VALUE>
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        </SAMPLE_ATTRIBUTES>
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    <SAMPLE alias="DRS037518" center_name="PKU" accession="DRS037518">
        <IDENTIFIERS>
            <PRIMARY_ID label="BioSample ID">SAMD00023592</PRIMARY_ID>
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        <SAMPLE_NAME>
            <TAXON_ID>885331</TAXON_ID>
            <SCIENTIFIC_NAME>oil production facility metagenome</SCIENTIFIC_NAME>
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            <SAMPLE_ATTRIBUTE>
                <TAG>collection_date</TAG>
                <VALUE>2009-12-03</VALUE>
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                <TAG>permeability</TAG>
                <VALUE>688.96md</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>project_name</TAG>
                <VALUE>Bacterial communities in water flooding oil reservoirs of China</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>lat_lon</TAG>
                <VALUE>115.4003 E 42.5628 N</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>sample_name</TAG>
                <VALUE>M16-11</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>env_feature</TAG>
                <VALUE>production water before field test</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>sample_title</TAG>
                <VALUE>M16-11</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>water_temp_regm</TAG>
                <VALUE>37??C</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>description</TAG>
                <VALUE>production well</VALUE>
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            <SAMPLE_ATTRIBUTE>
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                <VALUE>PRJDB3328</VALUE>
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                <TAG>env_material</TAG>
                <VALUE>production water</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>org_carb</TAG>
                <VALUE>89.80mg/L</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>env_biome</TAG>
                <VALUE>oil field</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>samp_salinity</TAG>
                <VALUE>976.23mg/L</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>porosity</TAG>
                <VALUE>0.22</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>depth</TAG>
                <VALUE>790-830m</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>ph</TAG>
                <VALUE>8.2</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>geo_loc_name</TAG>
                <VALUE>China: Menggulin block,Huabei oil field</VALUE>
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        </SAMPLE_ATTRIBUTES>
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    <SAMPLE alias="DRS037519" center_name="PKU" accession="DRS037519">
        <IDENTIFIERS>
            <PRIMARY_ID label="BioSample ID">SAMD00023593</PRIMARY_ID>
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        <SAMPLE_NAME>
            <TAXON_ID>885331</TAXON_ID>
            <SCIENTIFIC_NAME>oil production facility metagenome</SCIENTIFIC_NAME>
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            <SAMPLE_ATTRIBUTE>
                <TAG>collection_date</TAG>
                <VALUE>2009-12-03</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>permeability</TAG>
                <VALUE>688.96md</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>project_name</TAG>
                <VALUE>Bacterial communities in water flooding oil reservoirs of China</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>lat_lon</TAG>
                <VALUE>115.4003 E 42.5628 N</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>sample_name</TAG>
                <VALUE>M16-9</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>env_feature</TAG>
                <VALUE>production water before field test</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>sample_title</TAG>
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            <SAMPLE_ATTRIBUTE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>porosity</TAG>
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            <SAMPLE_ATTRIBUTE>
                <TAG>depth</TAG>
                <VALUE>790-830m</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>ph</TAG>
                <VALUE>8.39</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>geo_loc_name</TAG>
                <VALUE>China: Menggulin block,Huabei oil field</VALUE>
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        </SAMPLE_ATTRIBUTES>
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        <IDENTIFIERS>
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                <VALUE>790-830m</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>ph</TAG>
                <VALUE>8.31</VALUE>
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                <VALUE>China: Menggulin block,Huabei oil field</VALUE>
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                <VALUE>8.24</VALUE>
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                <VALUE>China: Menggulin block,Huabei oil field</VALUE>
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                <VALUE>8.92</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>env_feature</TAG>
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                <VALUE>44.6??C</VALUE>
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                <VALUE>PRJDB3328</VALUE>
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                <VALUE>production water</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>env_biome</TAG>
                <VALUE>oil field</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>porosity</TAG>
                <VALUE>0.3</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>depth</TAG>
                <VALUE>1155-1207m</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>geo_loc_name</TAG>
                <VALUE>China: Naner block,Daqing oil field</VALUE>
            </SAMPLE_ATTRIBUTE>
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        <IDENTIFIERS>
            <PRIMARY_ID label="BioSample ID">SAMD00023614</PRIMARY_ID>
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            <TAXON_ID>885331</TAXON_ID>
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                <VALUE>44.6??C</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>depth</TAG>
                <VALUE>1155-1207m</VALUE>
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            <SAMPLE_ATTRIBUTE>
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                <VALUE>China: Naner block,Daqing oil field</VALUE>
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            <PRIMARY_ID label="BioSample ID">SAMD00023615</PRIMARY_ID>
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            <TAXON_ID>885331</TAXON_ID>
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                <VALUE>1155-1207m</VALUE>
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                <VALUE>China: Naner block,Daqing oil field</VALUE>
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            <TAXON_ID>885331</TAXON_ID>
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                <VALUE>China: Naner block,Daqing oil field</VALUE>
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                <VALUE>2012-07-23</VALUE>
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                <VALUE>44.6??C</VALUE>
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                <TAG>porosity</TAG>
                <VALUE>0.3</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>depth</TAG>
                <VALUE>1155-1207m</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>geo_loc_name</TAG>
                <VALUE>China: Naner block,Daqing oil field</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>depth</TAG>
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            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>geo_loc_name</TAG>
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            <SAMPLE_ATTRIBUTE>
                <TAG>depth</TAG>
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            <SAMPLE_ATTRIBUTE>
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            <TAXON_ID>885331</TAXON_ID>
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            <SAMPLE_ATTRIBUTE>
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            <SAMPLE_ATTRIBUTE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>depth</TAG>
                <VALUE>1155-1207m</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>geo_loc_name</TAG>
                <VALUE>China: Naner block,Daqing oil field</VALUE>
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        </SAMPLE_ATTRIBUTES>
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            <TAXON_ID>885331</TAXON_ID>
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                <VALUE>2006.08md</VALUE>
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            <SAMPLE_ATTRIBUTE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>depth</TAG>
                <VALUE>1155-1207m</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>geo_loc_name</TAG>
                <VALUE>China: Naner block,Daqing oil field</VALUE>
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        <SAMPLE_NAME>
            <TAXON_ID>885331</TAXON_ID>
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            <SAMPLE_ATTRIBUTE>
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            <SAMPLE_ATTRIBUTE>
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                <VALUE>China: Naner block,Daqing oil field</VALUE>
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        <IDENTIFIERS>
            <PRIMARY_ID label="BioSample ID">SAMD00023644</PRIMARY_ID>
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            <TAXON_ID>885331</TAXON_ID>
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                <VALUE>125.0156 E 46.6025 N</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>sample_name</TAG>
                <VALUE>N2-D3-P40-6B</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>env_feature</TAG>
                <VALUE>production water (not only adopted displacement recovery, but also huff and puff in a single well) about four monthes after the first field test</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>sample_title</TAG>
                <VALUE>N2-D3-P40-6B</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>water_temp_regm</TAG>
                <VALUE>44.6??C</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>description</TAG>
                <VALUE>production well</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>bioproject_id</TAG>
                <VALUE>PRJDB3328</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>env_material</TAG>
                <VALUE>production water</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>env_biome</TAG>
                <VALUE>oil field</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>porosity</TAG>
                <VALUE>0.3</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>depth</TAG>
                <VALUE>1155-1207m</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>geo_loc_name</TAG>
                <VALUE>China: Naner block,Daqing oil field</VALUE>
            </SAMPLE_ATTRIBUTE>
        </SAMPLE_ATTRIBUTES>
    </SAMPLE>
    <SAMPLE alias="DRS037584" center_name="PKU" accession="DRS037584">
        <IDENTIFIERS>
            <PRIMARY_ID label="BioSample ID">SAMD00023658</PRIMARY_ID>
        </IDENTIFIERS>
        <SAMPLE_NAME>
            <TAXON_ID>885331</TAXON_ID>
            <SCIENTIFIC_NAME>oil production facility metagenome</SCIENTIFIC_NAME>
        </SAMPLE_NAME>
        <SAMPLE_ATTRIBUTES>
            <SAMPLE_ATTRIBUTE>
                <TAG>collection_date</TAG>
                <VALUE>2012-09-24</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>permeability</TAG>
                <VALUE>2006.08md</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>project_name</TAG>
                <VALUE>Bacterial communities in water flooding oil reservoirs of China</VALUE>
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                <TAG>lat_lon</TAG>
                <VALUE>125.0156 E 46.6025 N</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>sample_name</TAG>
                <VALUE>N2-D3-P40-7B</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>env_feature</TAG>
                <VALUE>production water (not only adopted displacement recovery, but also huff and puff in a single well) about five monthes after the first field test</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>sample_title</TAG>
                <VALUE>N2-D3-P40-7B</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>water_temp_regm</TAG>
                <VALUE>44.6??C</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>description</TAG>
                <VALUE>production well</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>bioproject_id</TAG>
                <VALUE>PRJDB3328</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>env_material</TAG>
                <VALUE>production water</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>env_biome</TAG>
                <VALUE>oil field</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>porosity</TAG>
                <VALUE>0.3</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>depth</TAG>
                <VALUE>1155-1207m</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>geo_loc_name</TAG>
                <VALUE>China: Naner block,Daqing oil field</VALUE>
            </SAMPLE_ATTRIBUTE>
        </SAMPLE_ATTRIBUTES>
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    <SAMPLE alias="DRS037585" center_name="PKU" accession="DRS037585">
        <IDENTIFIERS>
            <PRIMARY_ID label="BioSample ID">SAMD00023659</PRIMARY_ID>
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        <SAMPLE_NAME>
            <TAXON_ID>885331</TAXON_ID>
            <SCIENTIFIC_NAME>oil production facility metagenome</SCIENTIFIC_NAME>
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        <SAMPLE_ATTRIBUTES>
            <SAMPLE_ATTRIBUTE>
                <TAG>collection_date</TAG>
                <VALUE>2012-10-25</VALUE>
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                <TAG>permeability</TAG>
                <VALUE>2006.08md</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>project_name</TAG>
                <VALUE>Bacterial communities in water flooding oil reservoirs of China</VALUE>
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                <VALUE>125.0156 E 46.6025 N</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>sample_name</TAG>
                <VALUE>N2-D3-P40-8B</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>env_feature</TAG>
                <VALUE>production water (not only adopted displacement recovery, but also huff and puff in a single well) about six monthes after the first field test</VALUE>
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                <TAG>sample_title</TAG>
                <VALUE>N2-D3-P40-8B</VALUE>
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                <TAG>water_temp_regm</TAG>
                <VALUE>44.6??C</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>description</TAG>
                <VALUE>production well</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>bioproject_id</TAG>
                <VALUE>PRJDB3328</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>env_material</TAG>
                <VALUE>production water</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>env_biome</TAG>
                <VALUE>oil field</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>porosity</TAG>
                <VALUE>0.3</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>depth</TAG>
                <VALUE>1155-1207m</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>geo_loc_name</TAG>
                <VALUE>China: Naner block,Daqing oil field</VALUE>
            </SAMPLE_ATTRIBUTE>
        </SAMPLE_ATTRIBUTES>
    </SAMPLE>
    <SAMPLE alias="DRS037586" center_name="PKU" accession="DRS037586">
        <IDENTIFIERS>
            <PRIMARY_ID label="BioSample ID">SAMD00023660</PRIMARY_ID>
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        <SAMPLE_NAME>
            <TAXON_ID>885331</TAXON_ID>
            <SCIENTIFIC_NAME>oil production facility metagenome</SCIENTIFIC_NAME>
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            <SAMPLE_ATTRIBUTE>
                <TAG>collection_date</TAG>
                <VALUE>2010-05-11</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>project_name</TAG>
                <VALUE>Bacterial communities in water flooding oil reservoirs of China</VALUE>
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                <TAG>lat_lon</TAG>
                <VALUE>85.4544E E 5.3653N N</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>sample_name</TAG>
                <VALUE>Q409W</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>env_feature</TAG>
                <VALUE>injection water before field test</VALUE>
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                <TAG>sample_title</TAG>
                <VALUE>Q409W</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>description</TAG>
                <VALUE>injection well</VALUE>
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                <VALUE>PRJDB3328</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>env_material</TAG>
                <VALUE>injection water</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>org_carb</TAG>
                <VALUE>35.79mg/L</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>env_biome</TAG>
                <VALUE>oil field</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>samp_salinity</TAG>
                <VALUE>6378.32mg/L</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>ph</TAG>
                <VALUE>8.63</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>geo_loc_name</TAG>
                <VALUE>China: Qizhong block,Xinjiang oil field</VALUE>
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    <SAMPLE alias="DRS037587" center_name="PKU" accession="DRS037587">
        <IDENTIFIERS>
            <PRIMARY_ID label="BioSample ID">SAMD00023661</PRIMARY_ID>
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        <SAMPLE_NAME>
            <TAXON_ID>885331</TAXON_ID>
            <SCIENTIFIC_NAME>oil production facility metagenome</SCIENTIFIC_NAME>
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                <VALUE>2010-05-11</VALUE>
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                <TAG>permeability</TAG>
                <VALUE>277.61md</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>project_name</TAG>
                <VALUE>Bacterial communities in water flooding oil reservoirs of China</VALUE>
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                <TAG>lat_lon</TAG>
                <VALUE>85.4544E E 5.3653N N</VALUE>
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                <TAG>sample_name</TAG>
                <VALUE>Q7203</VALUE>
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            <SAMPLE_ATTRIBUTE>
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                <VALUE>production water before field test</VALUE>
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                <VALUE>Q7203</VALUE>
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                <TAG>water_temp_regm</TAG>
                <VALUE>32??C</VALUE>
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                <VALUE>PRJDB3328</VALUE>
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                <TAG>env_material</TAG>
                <VALUE>production water</VALUE>
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                <TAG>org_carb</TAG>
                <VALUE>41.50mg/L</VALUE>
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                <TAG>env_biome</TAG>
                <VALUE>oil field</VALUE>
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                <TAG>samp_salinity</TAG>
                <VALUE>4875.89mg/L</VALUE>
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                <TAG>porosity</TAG>
                <VALUE>0.17</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>depth</TAG>
                <VALUE>1088m</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>ph</TAG>
                <VALUE>8.18</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>geo_loc_name</TAG>
                <VALUE>China: Qizhong block,Xinjiang oil field</VALUE>
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    <SAMPLE alias="DRS037588" center_name="PKU" accession="DRS037588">
        <IDENTIFIERS>
            <PRIMARY_ID label="BioSample ID">SAMD00023662</PRIMARY_ID>
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        <SAMPLE_NAME>
            <TAXON_ID>885331</TAXON_ID>
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                <VALUE>2010-05-11</VALUE>
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                <TAG>permeability</TAG>
                <VALUE>277.61md</VALUE>
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                <VALUE>Bacterial communities in water flooding oil reservoirs of China</VALUE>
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                <TAG>lat_lon</TAG>
                <VALUE>85.4544E E 5.3653N N</VALUE>
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                <TAG>sample_name</TAG>
                <VALUE>Q72121</VALUE>
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                <VALUE>production water before field test</VALUE>
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                <VALUE>8.18</VALUE>
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                <VALUE>China: Qizhong block,Xinjiang oil field</VALUE>
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        <IDENTIFIERS>
            <PRIMARY_ID label="BioSample ID">SAMD00023663</PRIMARY_ID>
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                <VALUE>277.61md</VALUE>
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                <VALUE>85.4544E E 5.3653N N</VALUE>
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                <TAG>sample_name</TAG>
                <VALUE>Q72122</VALUE>
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                <VALUE>1088m</VALUE>
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                <TAG>ph</TAG>
                <VALUE>8.13</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>geo_loc_name</TAG>
                <VALUE>China: Qizhong block,Xinjiang oil field</VALUE>
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        <IDENTIFIERS>
            <PRIMARY_ID label="BioSample ID">SAMD00023664</PRIMARY_ID>
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                <VALUE>2010-05-11</VALUE>
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                <VALUE>277.61md</VALUE>
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                <VALUE>85.4544E E 5.3653N N</VALUE>
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                <VALUE>Q7222</VALUE>
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                <VALUE>5764.56mg/L</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>porosity</TAG>
                <VALUE>0.17</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>depth</TAG>
                <VALUE>1088m</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>ph</TAG>
                <VALUE>8.26</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>geo_loc_name</TAG>
                <VALUE>China: Qizhong block,Xinjiang oil field</VALUE>
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        <IDENTIFIERS>
            <PRIMARY_ID label="BioSample ID">SAMD00023665</PRIMARY_ID>
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            <TAXON_ID>885331</TAXON_ID>
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                <VALUE>2010-05-11</VALUE>
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                <VALUE>277.61md</VALUE>
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                <TAG>sample_name</TAG>
                <VALUE>Q7291A</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>env_feature</TAG>
                <VALUE>production water before field test</VALUE>
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                <VALUE>32??C</VALUE>
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                <TAG>env_material</TAG>
                <VALUE>production water</VALUE>
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            <SAMPLE_ATTRIBUTE>
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            <SAMPLE_ATTRIBUTE>
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                <VALUE>9376.00mg/L</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>env_biome</TAG>
                <VALUE>oil field</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>samp_salinity</TAG>
                <VALUE>62568.51mg/L</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>porosity</TAG>
                <VALUE>0.26</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>depth</TAG>
                <VALUE>1000m</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>ph</TAG>
                <VALUE>6.9</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>geo_loc_name</TAG>
                <VALUE>China: Yueer block,Qinghai oil field</VALUE>
            </SAMPLE_ATTRIBUTE>
        </SAMPLE_ATTRIBUTES>
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        <IDENTIFIERS>
            <PRIMARY_ID label="BioSample ID">SAMD00023703</PRIMARY_ID>
        </IDENTIFIERS>
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            <TAXON_ID>885331</TAXON_ID>
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                <TAG>lat_lon</TAG>
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            <SAMPLE_ATTRIBUTE>
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            <SAMPLE_ATTRIBUTE>
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                <VALUE>49.5??C</VALUE>
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                <VALUE>injection water</VALUE>
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            <SAMPLE_ATTRIBUTE>
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                <VALUE>6550.00mg/L</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>env_biome</TAG>
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            <SAMPLE_ATTRIBUTE>
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                <VALUE>72036.35mg/L</VALUE>
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                <VALUE>6.9</VALUE>
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            <SAMPLE_ATTRIBUTE>
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            <SAMPLE_ATTRIBUTE>
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                <VALUE>injection water</VALUE>
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                <VALUE>72.25mg/L</VALUE>
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                <TAG>env_biome</TAG>
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    </SAMPLE>
    <SAMPLE alias="DRS037646" center_name="PKU" accession="DRS037646">
        <IDENTIFIERS>
            <PRIMARY_ID label="BioSample ID">SAMD00023720</PRIMARY_ID>
        </IDENTIFIERS>
        <SAMPLE_NAME>
            <TAXON_ID>885331</TAXON_ID>
            <SCIENTIFIC_NAME>oil production facility metagenome</SCIENTIFIC_NAME>
        </SAMPLE_NAME>
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            <SAMPLE_ATTRIBUTE>
                <TAG>collection_date</TAG>
                <VALUE>2010-05-18</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>permeability</TAG>
                <VALUE>911.86md</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>project_name</TAG>
                <VALUE>Bacterial communities in water flooding oil reservoirs of China</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>lat_lon</TAG>
                <VALUE>118.4925 E 37.4668 N</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>sample_name</TAG>
                <VALUE>Z3-X24</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>env_feature</TAG>
                <VALUE>production water before field test</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>sample_title</TAG>
                <VALUE>Z3-X24</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>water_temp_regm</TAG>
                <VALUE>60??C</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>description</TAG>
                <VALUE>production well</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>bioproject_id</TAG>
                <VALUE>PRJDB3328</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>env_material</TAG>
                <VALUE>production water</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>org_carb</TAG>
                <VALUE>83.97mg/L</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>env_biome</TAG>
                <VALUE>oil field</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>samp_salinity</TAG>
                <VALUE>6558.26mg/L</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>porosity</TAG>
                <VALUE>0.3</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>depth</TAG>
                <VALUE>1240-1360m</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>ph</TAG>
                <VALUE>7.98</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>geo_loc_name</TAG>
                <VALUE>China: Zhan3 block,Shengli oil field</VALUE>
            </SAMPLE_ATTRIBUTE>
        </SAMPLE_ATTRIBUTES>
    </SAMPLE>
    <SAMPLE alias="DRS037647" center_name="PKU" accession="DRS037647">
        <IDENTIFIERS>
            <PRIMARY_ID label="BioSample ID">SAMD00023721</PRIMARY_ID>
        </IDENTIFIERS>
        <SAMPLE_NAME>
            <TAXON_ID>885331</TAXON_ID>
            <SCIENTIFIC_NAME>oil production facility metagenome</SCIENTIFIC_NAME>
        </SAMPLE_NAME>
        <SAMPLE_ATTRIBUTES>
            <SAMPLE_ATTRIBUTE>
                <TAG>collection_date</TAG>
                <VALUE>2011-01-13</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>permeability</TAG>
                <VALUE>911.86md</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>project_name</TAG>
                <VALUE>Bacterial communities in water flooding oil reservoirs of China</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>lat_lon</TAG>
                <VALUE>118.4925 E 37.4668 N</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>sample_name</TAG>
                <VALUE>Z3-X24-3-1 B</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>env_feature</TAG>
                <VALUE>production water (huff and puff in a single well) about one day after field test</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>sample_title</TAG>
                <VALUE>Z3-X24-3-1 B</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>water_temp_regm</TAG>
                <VALUE>60??C</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>description</TAG>
                <VALUE>production well</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>bioproject_id</TAG>
                <VALUE>PRJDB3328</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>env_material</TAG>
                <VALUE>production water</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>env_biome</TAG>
                <VALUE>oil field</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>porosity</TAG>
                <VALUE>0.3</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>depth</TAG>
                <VALUE>1240-1360m</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>geo_loc_name</TAG>
                <VALUE>China: Zhan3 block,Shengli oil field</VALUE>
            </SAMPLE_ATTRIBUTE>
        </SAMPLE_ATTRIBUTES>
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    <SAMPLE alias="DRS037648" center_name="PKU" accession="DRS037648">
        <IDENTIFIERS>
            <PRIMARY_ID label="BioSample ID">SAMD00023722</PRIMARY_ID>
        </IDENTIFIERS>
        <SAMPLE_NAME>
            <TAXON_ID>885331</TAXON_ID>
            <SCIENTIFIC_NAME>oil production facility metagenome</SCIENTIFIC_NAME>
        </SAMPLE_NAME>
        <SAMPLE_ATTRIBUTES>
            <SAMPLE_ATTRIBUTE>
                <TAG>collection_date</TAG>
                <VALUE>2011-01-14</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>permeability</TAG>
                <VALUE>911.86md</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>project_name</TAG>
                <VALUE>Bacterial communities in water flooding oil reservoirs of China</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>lat_lon</TAG>
                <VALUE>118.4925 E 37.4668 N</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>sample_name</TAG>
                <VALUE>Z3-X24-3-2 B</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>env_feature</TAG>
                <VALUE>production water (huff and puff in a single well) about two days after field test</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>sample_title</TAG>
                <VALUE>Z3-X24-3-2 B</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>water_temp_regm</TAG>
                <VALUE>60??C</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>description</TAG>
                <VALUE>production well</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>bioproject_id</TAG>
                <VALUE>PRJDB3328</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>env_material</TAG>
                <VALUE>production water</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>env_biome</TAG>
                <VALUE>oil field</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>porosity</TAG>
                <VALUE>0.3</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>depth</TAG>
                <VALUE>1240-1360m</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>geo_loc_name</TAG>
                <VALUE>China: Zhan3 block,Shengli oil field</VALUE>
            </SAMPLE_ATTRIBUTE>
        </SAMPLE_ATTRIBUTES>
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    <SAMPLE alias="DRS037649" center_name="PKU" accession="DRS037649">
        <IDENTIFIERS>
            <PRIMARY_ID label="BioSample ID">SAMD00023723</PRIMARY_ID>
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        <SAMPLE_NAME>
            <TAXON_ID>885331</TAXON_ID>
            <SCIENTIFIC_NAME>oil production facility metagenome</SCIENTIFIC_NAME>
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            <SAMPLE_ATTRIBUTE>
                <TAG>collection_date</TAG>
                <VALUE>2011-01-16</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>permeability</TAG>
                <VALUE>911.86md</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>project_name</TAG>
                <VALUE>Bacterial communities in water flooding oil reservoirs of China</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>lat_lon</TAG>
                <VALUE>118.4925 E 37.4668 N</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>sample_name</TAG>
                <VALUE>Z3-X24-3-3 B</VALUE>
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                <TAG>env_feature</TAG>
                <VALUE>production water (huff and puff in a single well) about four days after field test</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>sample_title</TAG>
                <VALUE>Z3-X24-3-3 B</VALUE>
            </SAMPLE_ATTRIBUTE>
            <SAMPLE_ATTRIBUTE>
                <TAG>water_temp_regm</TAG>
                <VALUE>60??C</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>description</TAG>
                <VALUE>production well</VALUE>
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            <SAMPLE_ATTRIBUTE>
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                <VALUE>PRJDB3328</VALUE>
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                <TAG>env_material</TAG>
                <VALUE>production water</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>env_biome</TAG>
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                <TAG>porosity</TAG>
                <VALUE>0.3</VALUE>
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                <TAG>depth</TAG>
                <VALUE>1240-1360m</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>geo_loc_name</TAG>
                <VALUE>China: Zhan3 block,Shengli oil field</VALUE>
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        <IDENTIFIERS>
            <PRIMARY_ID label="BioSample ID">SAMD00023724</PRIMARY_ID>
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        <SAMPLE_NAME>
            <TAXON_ID>885331</TAXON_ID>
            <SCIENTIFIC_NAME>oil production facility metagenome</SCIENTIFIC_NAME>
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                <VALUE>2011-01-20</VALUE>
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                <VALUE>911.86md</VALUE>
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                <VALUE>118.4925 E 37.4668 N</VALUE>
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                <TAG>sample_name</TAG>
                <VALUE>Z3-X24-3-4 B</VALUE>
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                <TAG>env_feature</TAG>
                <VALUE>production water (huff and puff in a single well) about eight days after field test</VALUE>
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                <VALUE>Z3-X24-3-4 B</VALUE>
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                <TAG>water_temp_regm</TAG>
                <VALUE>60??C</VALUE>
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                <VALUE>production well</VALUE>
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                <VALUE>production water</VALUE>
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                <VALUE>0.3</VALUE>
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                <TAG>depth</TAG>
                <VALUE>1240-1360m</VALUE>
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            <SAMPLE_ATTRIBUTE>
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                <VALUE>China: Zhan3 block,Shengli oil field</VALUE>
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        <IDENTIFIERS>
            <PRIMARY_ID label="BioSample ID">SAMD00023725</PRIMARY_ID>
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        <SAMPLE_NAME>
            <TAXON_ID>885331</TAXON_ID>
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                <VALUE>2010-05-18</VALUE>
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                <VALUE>911.86md</VALUE>
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                <VALUE>Bacterial communities in water flooding oil reservoirs of China</VALUE>
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                <TAG>lat_lon</TAG>
                <VALUE>118.4925 E 37.4668 N</VALUE>
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                <VALUE>Z3-X27</VALUE>
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                <VALUE>60??C</VALUE>
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                <TAG>samp_salinity</TAG>
                <VALUE>6614.82mg/L</VALUE>
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                <TAG>porosity</TAG>
                <VALUE>0.3</VALUE>
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                <VALUE>1240-1360m</VALUE>
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            <SAMPLE_ATTRIBUTE>
                <TAG>ph</TAG>
                <VALUE>8.03</VALUE>
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            <SAMPLE_ATTRIBUTE>
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                <VALUE>China: Zhan3 block,Shengli oil field</VALUE>
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        <IDENTIFIERS>
            <PRIMARY_ID label="BioSample ID">SAMD00023726</PRIMARY_ID>
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            <SCIENTIFIC_NAME>oil production facility metagenome</SCIENTIFIC_NAME>
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                <TAG>lat_lon</TAG>
                <VALUE>118.4925 E 37.4668 N</VALUE>
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                <VALUE>48.58mg/L</VALUE>
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                <TAG>ph</TAG>
                <VALUE>8.19</VALUE>
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                <VALUE>China: Zhan3 block,Shengli oil field</VALUE>
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</SAMPLE_SET>
