单井三维三相黑油模型的建立及自动历史拟合的实现

建立了一个柱坐标系下的三维三相单井黑油模型.通过隐式压力隐式饱和度(IMPlMS)方法对模型进行求解.获得了稳定的压力和饱和度计算结果.在此基础上.建立一个带约束条件的非线性目标函数.运用最优化方法使目标函数达到最小.实现自动历史拟合.从而反求得各地层参数值.另外还对大港油田三口测试井的测试资料进行了自动历史拟合.求得了各自的地层参数值.同时将本文求得的地层参数值与美国SSI软件解释结果及电测解释结果进行了对比.证实了本模型求解结果的可靠性.

ESTABLISHMENT OF A 3-DIMENTIONAL AND 3 PHASE SINGLE WELL BLACK OIL MODEL AND THE ACHIEVEMENT OF AUTOMATIC HISTORY MATCHING

A 3-dimentional for black oil model in cylindrical coordinate system for 3-phase single well is established. This model is solved with an implicit pressure and implicit saturation (IMPIMS) method, and the stable results of pressure and saturation are obtained. Based on this model, a nonlinear objective function with restraints is set up. Automatic history matching is achieved by using optimal control methods to minimize the objective function, so the numerical value of the formation properties is calculated inversely. In addition, the automatic history matching for the test data of 3 wells in Dagang Oilfield is made, and the numerical value of the individual formation parameters is obtained. A comparison of 3 different optimal methods used in this model (powell, Flectcher' 1972, DFP) is given. At the smae time, the calculated numerical results of formation parameters are compared with the interpretation result obtained by US. SSI program and logging. The reliability of the result obtained by this model can be approved.