摘要
对一维、二维柱坐标下密闭测试的井底压力和井底产量进行了数值模拟。在正演计算中 ,直接处理井底流量 ,通过流量和压力的相互递推 ,避开了密闭测试无法准确获取产量数据的问题 ;借鉴地球物理反演法的思想 ,通过曲线的自动拟合求取试井参数。该方法利用数值方法求出雅可比矩阵 ,将非线性问题线性化 ,然后以迭代的方式修正模型参数 ,直到满足预定的要求。
Bottomhole pressure and sandface rate in 1D and 2D coordinate are modeled. In the course of forward calculation, the sandface rate and bottomhole pressure are deduced from each other for avoiding the problem that there is no way obtaining accurately the rate data. The idea of the geophysical inversion is adopted to get the model parameters. The Yakobi Matrix is obtained using numerical method, and the nonlinear problem is linearized. The model parameters are modified by way of iterative least squares method. The methods are tested and verified through several examples.
出处
《油气井测试》
2002年第4期5-8,共4页
Well Testing
