论文部分内容阅读
Yinggehai(莺歌海) basin and Jiyang(济阳) depression experienced similar tectonic evo-lution,which is mainly controlled by the strike-slip faults.The strike pull-apart basins are characteris-tic by multiple deposition cycles,migration of deposition and subsidence center,and diversity deposi-tional systems.Furthermore,both basins show abnormal formation pressure.Compared with the oil and gas-rich Jiyang depression,Yinggehai basin developed the similar geological background that is favorable to the formation of funnel-shaped meshwork-carpet subtle reservoirs.Overpressure diapir body is the core of hydrocarbon accumulation in central diaper zone of Yinggehai basin.Driven by high pressure,oil and gas migrate along the funnel-shaped passage system into the overlying low-potential zone formed.The overlying sand bodies of overpressure diapirs are the favorable gas exploration zone.
Depression is similar to tectonic evo-lution, which is mainly controlled by the strike-slip faults. The strike pull-apart basins are characteris-tic by multiple deposition cycles, migration of deposition and subsidence center, and diversity deposi- tional systems. Future, both basins show abnormal formation pressure. Compared with the oil and gas-rich Jiyang depression, Yinggehai basin developed similar similar background that is favorable to the formation of funnel-shaped meshwork- carpet subtle reservoirs. Overpressure diapir body is the core of hydrocarbon accumulation in central diaper zone of Yinggehai basin. Driven by high pressure, oil and gas migrate along the funnel-shaped passage system into the overlying low-potential zone formed. of overpressure diapirs are the favorable gas exploration zone.