摘要
根据石油地质理论,如果一个具有储集条件的断层体周缘被封闭,且其上方又有良好的封盖条件,便可形成断层体圈闭,若有油源供给,就可能聚集油气形成断层体油气藏。自然界可能存在沥青封堵型、断层交汇型、断层尖灭消失型和层间滑动型等4种成因类型的断层体油气藏(圈闭)。柴达木盆地北缘的冷湖三号石深1井侏罗系油气藏可能是典型的沥青封堵型断层体油气藏。断层体圈闭位于地质情况复杂的断裂发育区,油气成藏条件优越,但保存条件差,具有很大的隐蔽性,是值得探索的新勘探领域。
A fault oil trap could be formed in case of that it had the reservoir condition, being covered by geological body and sealed by faults. There are 4 kinds of possible fault body traps or fault body accumulations in nature, including pitch sealing, fault thinning out and faults intersection as well as slipping between strata. The Jurassic petroleum in the Well Shishen 1, Lenghu No.3 Oilfield, north Qaidm Basin, is much likely a typical feature of the pitch sealing fault body accumulation type. Because of the special geological conditions, the fault body traps have better hydrocarbon migrating and accumulating condition, however, its accumulation is easily destroyed by tectonic motions, so, this kind of accumulations are real invisible.
出处
《石油勘探与开发》
SCIE
EI
CAS
CSCD
北大核心
2004年第3期148-150,共3页
Petroleum Exploration and Development
关键词
断层体
油气圈闭
油气藏
fault body
petroleum trap
reservoir
