合水地区庄19井区长8_2储层现今地应力场有限元模拟

Finite Element Simulation of the Present Ground Stress Field of Chang 8_2 Reservoir in Wellblock Zhuang 19 of Heshui Area

以长庆油田合水地区庄19井区长82储层作为研究对象,根据其地层及岩石力学性质特征,建立了研究区地质及力学模型,选取实测地应力大小和方向作为反演准则,利用有限元方法计算了该区现今地应力场分布,并将模拟结果与储层参数及生产特征进行了对比,总结了三者之间的对应关系并探讨了内在联系。现今地应力场模拟结果可为该地区井网部署、优化及整体压裂规划等工作提供科学参考。

A geological and mechanical model was established according to the stratigraphy and rock mechanic properties of Chang 82 Reservoir in Wellblock Zhuang19 of Heshui Region in Changqing Oilfield.A finite element simulation was used to calculate the present ground stress field by taking the measured stress data as inversion criterion.The relationship between stress,reservoir parameters and production data was discussed.The simulation result can be taken as reference for well pattern design,optimization and overall fracturing design.