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Article Navigation >  PETROLEUM GEOLOGY & EXPERIMENT  > 2005  >  27(2): 169-172
Zhuo Qingong. EFFECTS OF ABNORMAL HIGH-PRESSURE ON THE HYDROCARBON-FORMING MECHANISM OF SOURCE ROCKS AND THE MIGRATION AND ACCUMULATION OF OIL AND GAS[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2005, 27(2): 169-172. doi: 10.11781/sysydz200502169
Citation: Zhuo Qingong. EFFECTS OF ABNORMAL HIGH-PRESSURE ON THE HYDROCARBON-FORMING MECHANISM OF SOURCE ROCKS AND THE MIGRATION AND ACCUMULATION OF OIL AND GAS[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2005, 27(2): 169-172. doi: 10.11781/sysydz200502169
shu

EFFECTS OF ABNORMAL HIGH-PRESSURE ON THE HYDROCARBON-FORMING MECHANISM OF SOURCE ROCKS AND THE MIGRATION AND ACCUMULATION OF OIL AND GAS

doi: 10.11781/sysydz200502169
  • 1.

    Petroleum University, Dongying, Shandong 257061, China

  • 2. Research Institute of Geological Sciences, Shengli Oilfield, SINOPEC, Dongying, Shandong 257015, China

  • Received Date: 2004-09-15
  • Rev Recd Date: 2005-02-10
  • Publish Date: 2005-03-25
    Abstract
  • The abnormal high-pressure of fluid controls the hydrocarbon-forming mechanism of source rocks and the migration and accumulation of oil and gas. Overpressure promoted the hydrocarbon generation of sulphur-rich source rocks in the upper sub-member of Es4; by contraries, it restrained the hydrocarbon generation of sulphur-poor source rocks in the middle and lower sub-members of Es3. Thus, in the former situation, hydrocarbon generated and discharged early, its maturity was lower, and it filled the peripheral and top traps of sags; in the latter, hydrocarbon generated and discharged late, its maturity was higher, and it filled the inner and lower traps of sags. The abnormal hygh-pressure of fluid also formed passages for hydrocarbon migration and accumulation. For the future, the forecast of subtle transportation systems is the key of exploration for lithological reservoirs.

     

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