摘要
PEBI(perpendicular bisection)网格是数值试井中被广泛采用的网格。PEBI网格划分的难点是如何在边界、断层及井间存在相互干扰下得到高质量的网格。为此,将油藏区域划分为若干个子区域,通过点、线等模块得到各子区域,对每个子区域生成网格点,就可以得到整个油藏区域的网格点。对所得到的网格点作Delaunay剖分,继而生成Voronoi图。本算法可以对存在复杂边界、复杂断层、复杂的井间干扰、复杂的井与断层间干扰的情况生成正确的PEBI网格。
PEBI grid is widely accepted in the numerical well test.The difficulty of PEBI grid meshing is how to generate the correct and reasonable grids in a reservoir area.By classifying vertical wells,fractural wells,horizontal wells,faults and boundaries,the algorithm split the reservoir into point modules,line modules,circle module,rounded rectangular modules and flat modules.By considering the interferences between the modules,restricted edges of each module are obtained.After generating grid points within restricted edges of every module,grid points of the reservoir are obtained.After making Delaunay triangulation to the mesh points,the Voronoi graph of the grid points is generated.This algorithm can generate correct PEBI grids of reservoir with complicated boundaries,faults, wells and interferences among them.
出处
《油气井测试》
2013年第1期23-26,30,共5页
Well Testing
基金
国家重大基础研究973项目(2011CB707305)
国家自然科学基金(10932010)
中央高校基本科研业务费专项资金资助
国家科技重大专项(2011ZX05009-006)
作者简介
查文舒，男，博士，1982年出生，2009年毕业于中国科学技术大学力学系渗流力学专业，现从事网格划分、渗流力学研究工作。联系电话：0551—3602473，E-mail：wszha@ustc．edu．cn
