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Article Navigation >  PETROLEUM GEOLOGY & EXPERIMENT  > 2004  >  26(6): 590-593
DONG Fu-xiang, LIU Li, MA Yan-ping. CARBON AND OXYGEN ISOTOPES OF CALCITE CEMENT IN THE LOWER PART OF THE SHA-1 FORMATION, THE DAGANG BEACH AREA[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2004, 26(6): 590-593. doi: 10.11781/sysydz200406590
Citation: DONG Fu-xiang, LIU Li, MA Yan-ping. CARBON AND OXYGEN ISOTOPES OF CALCITE CEMENT IN THE LOWER PART OF THE SHA-1 FORMATION, THE DAGANG BEACH AREA[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2004, 26(6): 590-593. doi: 10.11781/sysydz200406590
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CARBON AND OXYGEN ISOTOPES OF CALCITE CEMENT IN THE LOWER PART OF THE SHA-1 FORMATION, THE DAGANG BEACH AREA

doi: 10.11781/sysydz200406590
  • 1.

    Land and Resources Department, Changchun Institute of Technology, Changchun, Jilin 130021, China

  • 2. Scool of Earth Sciences, Jilin University, Changchun, Jilin 130061, China

  • Received Date: 2004-02-06
  • Rev Recd Date: 2004-09-16
  • Publish Date: 2004-11-25
    Abstract
  • Composition of carbon and oxygen isotopes of calcite cement from 12 samples in sandstone reservoirs of the Lower Part of Number 1 of Shahejie Formation, Dagang beach area, are analyzed. The δ13C va-lue of calcite cement varies from -9.58‰ to +3.61‰, and the average is 5.29‰; the δ18O value varies from -12.46‰ to +0.09‰, and the average is -6.28‰. Discussion of diagenetic fluid salinity, carbon source and formation cause suggest that, diagenetic fluid salinity of calcite cement in this area is high, and the calcite cement comes from intrastratal clastic carbonate or dissolution of calcite from adjacent layers. Carbon mainly originates from organic carbon.

     

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