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地应力是在漫长的地质历史时期形成的,主要由上覆岩层的重量和构造运动产生的,平面应力场的分布规律对于油气田的勘探,开发更具有重要的指导作用,地层应力的大小决定了低渗透油气田压裂改造时形成的人工裂缝的几何形态和规模;本文通过对区块单井地应力大小进行分析,得出平面应力大小分布图,同时进行井下微地震测试人工裂缝方位,探索平面地应力大小与人工裂缝方位关系。
Geostress was formed during the long period of geological history, which is mainly caused by the weight and tectonic movement of the overlying strata. The distribution of the plane stress field is more important for the exploration and development of oil and gas fields. The stratigraphic stress determines the magnitude of the stress The fractal geometry and scale of artificial fractures formed during the fracturing reformation of low permeability oil and gas fields are analyzed. Based on the analysis of the stress of single well in the block, the distribution of the plane stress is obtained, meanwhile the azimuth of downhole micro-seismic test of artificial fractures, exploration plane Relationship between the size of earth stress and the orientation of artificial fractures.