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.
出处
《油气地质与采收率》
CAS
CSCD
北大核心
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)
关键词
多分支井
渗流特征
近井油藏地带
电模拟
产能
multilateral well
percolation characteristic
immediate vicinity of wellbore
electrical analog
productivity
