非均匀裂缝性油藏蒸汽驱的自适应网格计算  

AMR method for numerical simulations of steam drive process in heterogeneous fractured reservoirs

作　　者：罗海山[1] 王晓宏[1] 施安峰[1] 

机构地区：[1]中国科学技术大学热科学和能源工程系,安徽合肥230026

出　　处：《辽宁工程技术大学学报（自然科学版）》2009年第S1期89-92,共4页Journal of Liaoning Technical University (Natural Science)

基　　金：国家自然科学基金资助项目(50674081);国家863基金资助项目(2006AA06Z228)

摘　　要：为提高非均匀裂缝性油藏流动数值计算的效率,自适应网格算法对裂缝和基质采用了不同网格结构,避免了基质渗透率非均匀情况下基质饱和度空间不连续给网格的粗化、细化带来的严重数学问题,并采用重正化方法计算裂缝粗网格等效渗透率。二维蒸汽驱算例的计算结果表明,相比于全精细网格计算,自适应网格算法不仅能够很好地提高计算效率,其计算精度也得到了较好的保证。To improve the computational efficiency for fluid flows in heterogeneous fractured reservoirs,the adaptive mesh refinement(AMR) algorithm using different grid structures for fracture and matrix systems is applied.This AMR algorithm avoids the mathematical difficulty caused by the spatial discontinuity of matrix saturations while performing the coarsening and refining operations.The renormalization method is used to upscale the fracture permeability.Numerical results of a two-dimensional steam drive example show a considerable improvement of computing efficiency with good accuracy,compared with the results of using uniformly fine grids.

关 键 词：双重介质 蒸汽驱 多相流 自适应网格法 

分 类 号：TE357.7[石油与天然气工程—油气田开发工程]