Lithologic Reservoirs ›› 2014, Vol. 26 ›› Issue (6): 28-33.doi: 10.3969/j.issn.1673-8926.2014.06.005

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Research on differences of lateral sealing between transoid fault and cisoid fault

FU Guang， LANG Yue， HU Xinlei   

  1.  College of Earth Sciences ， Northeast Petroleum University ， Daqing 163318 ， Heilongjiang ， China
  • Online:2014-11-20 Published:2014-11-20

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Abstract:

 In order to study the controlling of faults to oil-gas accumulation and distribution in oil-gas-bearing basin ， based on the study of lateral sealing mechanism of fault and its influencing factors ， the differences of lateral sealing between transoid fault and cisoid fault were studied by analyzing the sealing characteristics between transoid and cisoid fault. The result shows that the differences of lateral sealing between transoid fault and cisoid fault are mainly showed in the following three aspects: ①the place of fault zone connected transoid fault and cisoid fault with reservoir is different ， the sliding crush zone of transoid fault connects with reservoir ， while the induced fracture zone of cisoid fault connects with reservoir; ②the lateral sealing objects of transoid and cisoid fault is different ， the lateral sealing object of transoid fault is mudstone of the other block ， while lateral sealing object of cisoid fault is fault-rock; ③the lateral oil-gas sealing capacity of transoid fault is different from that of cisoid fault, and theoretical and actual example research all show that the lateral oil-gas sealing capacity of transoid fault is stronger than that of cisoid fault

Key words:  tight oil, geological characteristics , comparison and classification , reserve calculation , North America

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