生长断层下降盘逆牵引背斜成因探讨

Genesis of reverse draging anticlines on downthrow side of growth faults

大庆石油管理局物探公司, 大庆163357

Geophysical Exploration Corporation,Daqing Petroleum Administration,Daqing City,Intercode: 163357

生长断层下降盘的逆牵引背斜, 在我国东部油田广泛发育, 是一种重要的油气圈闭类型。关于其成因众说不一。本文通过对模型的力学分析, 阐述了逆牵引背斜的形成机理, 得出了逆牵引背斜是一区域拉张背景下的局部挤压作用形成的结论。

Reverse draging anticlines are well developed in oil fields in eastern china,they are a kind of important hydrocarbon traps. But so far,there is no convining explanation for their genesis. This paper tries to clucidate the genesis by means of mechanical analysis of models. The conclusion is that the anticlines are formed under local extrusion asainst a regionally extensional setting.