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Article Navigation >  PETROLEUM GEOLOGY & EXPERIMENT  > 2009  >  31(3): 244-248
Cai Jia, Luo Jiaqun, Gan Huajun, Chen Shaoping. ACCUMULATION PATTERN AND ENRICHMENT LAWS OF SUBTLE HYDROCARBON RESERVOIRS IN BIYANG SAG, NANXIANG BASIN[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2009, 31(3): 244-248. doi: 10.11781/sysydz200903244
Citation: Cai Jia, Luo Jiaqun, Gan Huajun, Chen Shaoping. ACCUMULATION PATTERN AND ENRICHMENT LAWS OF SUBTLE HYDROCARBON RESERVOIRS IN BIYANG SAG, NANXIANG BASIN[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2009, 31(3): 244-248. doi: 10.11781/sysydz200903244
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ACCUMULATION PATTERN AND ENRICHMENT LAWS OF SUBTLE HYDROCARBON RESERVOIRS IN BIYANG SAG, NANXIANG BASIN

doi: 10.11781/sysydz200903244
  • 1.

    Faculty of Earth Resources, China University of Geosciences, Wuhan, Hubei 430074, China

  • 2. Key Laboratory of Tectonics and Petroleum Resources, China University of Geosciences, Wuhan, Hubei 430074, China

  • 3. Research Institute of Henan Oil Field, SINOPEC, Nanyang, Henan 473132, China

  • 4. Research Center of CNOOC, CNOOC, Beijing 100027, China

  • Received Date: 2008-04-10
  • Rev Recd Date: 2009-04-02
  • Publish Date: 2009-06-28
    Abstract
  • The Biyang Sag in the Nanxiang Basin is very favorable for hydrocarbon accumulation.Formation and development of the sag are controlled by 2 deep-large faults in the south.Superior oil generation conditions,abundant sediment resources,development of sand body,good reservoir conditions,good source-reservoir-cap rock assemblage and multiple trap model configurations are favorable for accumulation.Subtle oil and gas reservoirs can be divided into 5 major types and 19 subtypes.In plane,reservoirs locate in circles,controlled by source sag.Vertically,they are influenced by temperature and pressure.Displacement sections of large boundary faults are favorable for large-scale sandstone pinch out reservoir.Inherited sedimentary-tectonic slopes are the targets for large-scale hydrocarbon migration.Oil and gas us-ually accumulate in nose-like uplifts.Deep sags are favorable to find low system trace fans,dolomite oil and gas reservoirs and deep-basin oil and gas reservoirs.Controlled by geometrical patterns,rollover faults can be found at the 2 ends of boundary fault.

     

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