裂缝性底水油藏水平井三维油水两相有限元数值模拟方法

建立了裂缝性底水油藏水平井三维油水二相的数值模型。与以往不同的是，该模型应用有限元方法进行差分离散，并将油水井视为单元的边界进行处理，选用任意形状六面体（曲边）单元和等参元变换以及隐式压力和隐式饱和度交替求解的方法。该模型可用来模拟计算裂缝性油藏（带边水或底水）的直井或水平井以及直井－水平井联合井网的开发问题。本模型对一裂缝性底水油藏水平井开发过程进行模拟计算，获得了一些对实际油藏工程有用的结论。图５表１参４（陈志宏摘

A finite element method for two phase fluid flow in a naturally fractured bottom water drive reservoir with horizontal wells.

A three dimensional, two phase(oil and water) numerical simulator used for a bottom water drive naturally fractured reservoir with horizontal wells has been developed. The fluid flow equations are solved by means of the finite element method based on Galerkin method, and wellbore is taken as the boundary of elements. The curved isoparametric elements with hexahedron can be used to obtain accurate solution. The model can be used to simulate the production process of a naturally fractured reservoir(with edge water drive or bottom water drive) with vertical wells,horizontal wells or their combination. The simulator is also used to simulate the performance of a naturally fractured bottom water drive reservoir with a horizontal well and satisfactory results are obtained.