断块油藏水平井与直井组合井网渗流解析解及其应用  

Analytic solution of horizontal-vertical composed well pattern seepage in fault-block reservoir and its application

作　　者：李晓军[1,2] 张琪[1] 路智勇[2] 

机构地区：[1]中国石油大学石油工程学院,山东东营257061 [2]胜利油田东辛采油厂,山东东营257094

出　　处：《中国石油大学学报（自然科学版）》2010年第3期84-88,共5页Journal of China University of Petroleum(Edition of Natural Science)

基　　金：中国石油化工股份有限公司先导试验项目(56-2009-js-00077)

摘　　要：通过坐标转换,将渗透率各向异性断块油藏转换为等价的各向同性断块油藏,分析水平井与直井组合井网及断层边界的变化;基于保角变换方法计算断块油藏水平井和直井组合井网势的分布,并研究组合井网在地层中的流线分布;建立渗透率各向异性断块油藏水平井与直井组合井网的产能计算公式。结果表明:断块油藏部署水平井与直井组合井网时,主流线与水平井的交点位于水平井两端点之间,并随水平井距断层距离的减小而向水平井中心点靠近;组合井网产能公式计算误差小于常用的水平井产能计算公式的,与实际生产数据吻合较好。The anisotropic fault-block reservoir was transformed into equivalent isotropic fault-block reservoir by means of coordinate conversion.The variation of horizontal-vertical well pattern and fault boundary was analyzed.Based on conformal transformation,potential distribution of horizontal-vertical well pattern was calculated.And streamlined distribution of the well pattern was studied in formation.And a new deliverability prediction equation was developed.The results show that the crossing point of main stream line and horizontal well locates between two end points of horizontal well,and the crossing point inclines to central point of horizontal well with the distance between horizontal well and fault decrease.The error of deliverability prediction by composed well pattern formula is smaller than that of commonly prediction formula,and the calculated result agrees well with field data.

关 键 词：渗透率各向异性 断块油藏 坐标转化 保角变换 组合井网 

分 类 号：TE324[石油与天然气工程—油气田开发工程]