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一、前言地应力是地壳岩石介质内部单位面积上的作用力。地应力的大小和方向随时间和空间位置的不同而变化,构成地应力场。按照应力场的形成和活动年代划分为古构造应力场和现代构造应力场,存在于当前地壳内的地应力场,叫做现代构造应力场;古构造应力场是指相对较老地质时期的构造应力场,可按其具体地质时期进一步详细划分,诸如燕山期构造应力场等。含油气盆地内的油气生成、运移、聚集、保存以及破坏再聚集的过程与盆地所处环境
I. INTRODUCTION In-situ stress is the force acting on the unit area inside the crustal rock medium. The size and direction of in-situ stress change with the location of time and space, forming the geostress field. According to the formation and activity of the stress field, the paleo-tectonic stress field and the modern tectonic stress field are divided into the current stress field in the crust, which is called the modern tectonic stress field. The paleotectonic stress field refers to the tectonic stress in the relatively older geological period Field, according to their specific geological period of further detailed division, such as the Yanshanian tectonic stress field. Hydrocarbon generation, migration, accumulation, preservation and destruction and reaggregation in petroliferous basins are related to the environment of basins