【摘要】 通过编制有限元程序计算重复压裂井周围注/采生产地层孔隙压力诱导应力,并结合3Dsurfer软件给出诱导应力三维分布.计算结果表明:注/采生产诱导应力沿初始裂缝方向和垂直裂缝方向均产生张应力;新方法计算结果与有限差分法最大相对误差9.502%.该方法计算简便,便于工程应用.更多还原

【Abstract】 Calculating injection/production pore pressure-induced stress around re-fracturing wells with the preparation of FEM,three-dimensional distribution of induced stress is given through 3Dsurfer software.The results show: injection/production pore pressure-induced stress along the vertical direction and orientation of cracks is tensile stress;the relative error maximum of the new method and the finite difference method is 9.502%.The method is simple and easy to use.更多还原