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在中东×区块的探井测试及储层改造实践中开展了系统的地层应力研究。结合地形变资料实施了地层应力数值模拟,确定了区块的主压应力方向;结合压前测试资料,确定了三向主应力值大小,并以此建立该区块拟作业井的分层地层应力剖面。根据地层应力方向,确定了2口侧钻探井的侧钻方位;根据主应力值的大小,结合流固耦合渗流模拟技术,确定了探井的临界测试压差;根据分层地层应力特征及水力裂缝扩展模拟结果,确定了水力压裂工艺技术方案。最终在2口探井成功实施了水力压裂测试作业,并取得显著改造效果。
In the Middle East x Block exploratory well testing and reservoir reconstruction practice carried out a systematic study of formation stress. Combined with the deformation data, the stratum stress numerical simulation was carried out to determine the principal compressive stress direction of the block. Combined with the pre-press test data, the three-direction principal stress value was determined and the stratified stratum Stress profile. According to the direction of formation stress, the lateral drilling azimuth of two side drilling wells was determined. Based on the principal stress value and the fluid-solid coupling seepage simulation technology, the critical pressure difference of exploration well was determined. According to the stratigraphic stress characteristics and hydraulic fractures Extend the simulation results to determine the hydraulic fracturing technology program. The successful completion of the hydraulic fracturing test operation in 2 exploration wells, and achieved significant transformation results.