多分支井近井油藏地带渗流的电模拟实验研究  

Experimental study of electric analog for the percolation characteristics of multilateral wells at immediate vicinity of wellbore

作　　者：郭迎春[1,2] 黄世军[3] 

机构地区：[1]中国科学院广州地球化学研究所,广东广州510640 [2]中国石化股份胜利油田分公司地质科学研究院,山东东营257015 [3]中国石油大学(北京)石油工程教育部重点实验室,北京102249

出　　处：《油气地质与采收率》2009年第5期95-96,99,共3页Petroleum Geology and Recovery Efficiency

基　　金：国家科技重大专项"低渗油气田高效开发钻井优化设计技术"(2008ZX05022-001)

摘　　要：多分支井由于其井身结构的复杂性增加了该种井型近井油藏地带渗流特征研究和产能评价的难度。采用电模拟实验手段,针对不同井型的平面多分支井描述了其油藏势的分布,并分析了分支数和分支长度对多分支井产能的影响。结果表明,多分支井等势线呈现距离井筒近的地方密集、距离井筒远的地方稀疏的特点,在井的指端较密集,相邻两分支之间较稀疏。当分支长度相等时,各分支对整口井的产量贡献相等;但当分支长度不相等时,各分支对整口井的产量贡献发生变化,多分支井生产时存在支间干扰。Complex well structure increases difficulties of productivity evaluation and percolation characteristics researeh of the multilateral wells at immediate vicinity of wellbore. Potential distribution of the multilateral wells was described and the effect of number and length on the productivity of the wells was analyzed by means of electrical analog experiment. The result shows that equipotential line of the well has the features of being dense near wellbore and at finger pint of wells and loose along with the wellbore and among two branches. When the length of branch is equal,the contribution of each branch to the whole well is equal. When the length of branch is not equal,the contribution is changed. Interference among branches exists when the multilateral well is producing.

关 键 词：多分支井 渗流特征 近井油藏地带 电模拟 产能 

分 类 号：TE311[石油与天然气工程—油气田开发工程]