摘要
从盖层、断层、水动力条件三方面对东渡凹陷油气藏的封堵条件进行研究，分析盐膏层对油气的富集和分布所起的作用，探讨泥岩盖层在不同深度条件下封堵能力的变化，对断块油气藏的封闭条件进行讨论，总结了水动力条件对油气成藏的影响。认为东渡凹陷盐膏层控制了北部地区油气的聚集成藏；浅层或深层泥岩盖层封堵条件很差；断块油气藏的形成和保存主要依赖于区域盖层的封闭和断层两侧盐膏层或泥岩与砂岩的配置；水动力条件对油气的保存具有一定的影响。东濮凹陷的油气封堵条件对于油气藏的形成和保存起关键作用。
The sealing conditions of reservoir are mainly affected by three factors: caprock, fault and hydrodynamics The authors point out that reservoirs in north-Dongpu depression are controlled by the distribution of salt-gypsum formation, the sealing condition of shale caprock is ineffective in shallow and deep formations; the formation and conservation of fault-block reservoir are mostly affected by the sealing conditions of regional caprock and the relation of salt-gypsum, shale to sandstone on both sides of the fault; the hydrodynamic conditions have some influence to the conservation of oil and gas. It is concluded that sealing conditions are crucial to the formation and conservation of petroleum reservoirs in Dongpu depression.
出处
《断块油气田》
CAS
1999年第1期17-21,共5页
Fault-Block Oil & Gas Field
关键词
东濮凹陷
油气藏
封闭条件
盖层
断层
油气运移
Dongpu Seg, Oil and gas reservoir, Sealing condition, Caprock, Fault, Hydrodynamic condition
