储层应力场的数值模拟

该文给出了油田储层应力场的两种数值模拟方法。一种是利用现场实测地应力资料,借助空间膜单元模型,反演远场应力边界条件,从而计算出储层应力场。另一种是借助于活动的最小二乘法直接插值得到应力场。针对鄯善油田三间房油藏,用所提出的方法计算模拟了储层应力场,得到了比较满意的结果,同时论述了这两种数值模拟方法的可行性。 

NUMERICAL SIMULATION OF STRESS FIELD IN RESERVOIR

This paper gives two methods to simulate a stress field in the reservoir. The first method is that some measured stress data and the model of a three-dimensional membrane element are used to detemine the far field stress boundary condition with a back analysis and thereby to evaluate the stress field in the reservoir. The second method is a direct interpolation to evaluate the stress field with a moving least square method. A feasibility of these methods are discussed in the paper. To use the methods we simulate the stress field of Sanjianfang reservoir in Shanshan oil field and obtain a lot of good results.