辽河盆地走滑构造特征与油气

走滑构造普遍存在于盆地构造体系之中,是寻找油气藏的一种重要构造样式。本文重点阐述了走滑构造的特征,指出辽河盆地的走滑构造在平面上表现为雁列褶皱构造,走滑断裂的发育具有平直性和分段性的特点,并可见断裂错开褶皱构造和火山岩体。走滑构造在剖面上花状构造发育较明显,钻井岩心中走滑运动形迹清楚;构造物理模拟实验也证明走滑运动的存在,并已产生作用。研究进一步指出走滑作用可形成各种类型的圈闭,且有利于储集层的发育,与油气密切相关,利于油气的聚集和成藏。

RELATLONSHIP BETWEEN CHARACTERISTICS OF STRIKE-SLIP STRUCTURE CHARACTERISTICS ANDOIL AND GAS IN LIAOHE BASIN

Slip structures are widely distributed in the basin structure system,which is an important structure model for seeking oil and gas.Strike-slip structure characteristics are intensively addressed in the paper and it is pointed out that the strike-slip structures of the Liaohe Basin exis t in en echelon folds laterally and th e strike-slip structures are characterized by straight segmentation and staggered fold structures and volcanic rock bodies can be seen;it is shown in the s ection that the flower shape archite cture in strike-slip structure develop significantly and the drilling core shows clear traces of strike-slip movement;in addition,structure physical simulation experiments also confirms the existence of strike-slip movement with noticeable effects.Research further pointed out that strike-slip movement can cause many ki nds of traps,facilitating the de-velopment of oil reservoirs,favora ble for oil and gas accumulation and r eservoir forming,so strike-slip structures have close relations with oil and gas.