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Article Navigation >  PETROLEUM GEOLOGY & EXPERIMENT  > 2008  >  30(4): 340-344
Zhao Guoxin. STUDY OF THE ABNORMAL HIGH-PRESSURE IN HYDROCARBON SOURCE ROCKS-TAKING PALEOGENE IN THE DONGYING SAG, THE BOHAI BAY BASIN AS AN EXAMPLE[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2008, 30(4): 340-344. doi: 10.11781/sysydz200804340
Citation: Zhao Guoxin. STUDY OF THE ABNORMAL HIGH-PRESSURE IN HYDROCARBON SOURCE ROCKS-TAKING PALEOGENE IN THE DONGYING SAG, THE BOHAI BAY BASIN AS AN EXAMPLE[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2008, 30(4): 340-344. doi: 10.11781/sysydz200804340
shu

STUDY OF THE ABNORMAL HIGH-PRESSURE IN HYDROCARBON SOURCE ROCKS-TAKING PALEOGENE IN THE DONGYING SAG, THE BOHAI BAY BASIN AS AN EXAMPLE

doi: 10.11781/sysydz200804340
  • 1.

    Department of Earth Sciences, Zhejiang University, Hangzhou, Zhejiang 310027, China

  • 2. Research Institute of Geological Sciences, Shengli Oil Field Branch Company, SINOPEC, Dongying, Shandong 257015, China

  • Received Date: 2007-11-23
  • Rev Recd Date: 2008-06-13
  • Publish Date: 2008-07-28
    Abstract
  • The abnormal high-pressure is very important to oil and gas accumulation.There is abnormal high-pressure in the 3rd and 4th member of Shahejie Formation of Paleogene all over the Dongying Sag,the Bohai Bay Basin.The main factors that lead to the pressure are under-compaction and hydrocarbon generation in the source rocks.The overpressure area is well corresponding with the thickness of source rocks.The present abnormal high-pressure is mainly distributed at a depth range 2 700 m to 3 500 m,and the range becomes bigger with increasing of the buried depth.Times of abnormal high-pressure should be considered when applying abnormal high-pressure to hydrocarbon accumulation.The present abnormal high-pressure in the source rocks has an active effect on the saving of oil and gas and it is oil source kitchen in future.The ancient abnormal high-pressure took an active part in the hydrocarbon migration in the source rocks and there is the main accumulation area of oil and gas.The main oil-gas enriched zones are located in the abnormal high-pressure after hydrocarbon generation in large scale.

     

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