基于电模拟实验的多分支井产能研究

基于水电相似原理,设计分支井的电模拟实验.研究了分支数目、分支角度、模型电阻、注入井位置等参数对分支井产能的影响和各个分支对油井产能的贡献度.结果表明:产能随着分支角度和分支数目的增加而增大,但增加趋势逐渐变缓.分支井的分支与水平段间存在干扰导致每个分支的产能贡献度有差别；注入井位置对油井产量影响很大,选择合适的注采井网对多分支水平井的生产至关重要.实验结果为优化分支井的形态和注采井网提供了依据.

Study on Multi-lateral Wells Productivity Based on Electric Analogy

A series of electric analogy experiments has been designed based on the water and electricity similarity principle. The contribution of each branch of the multi-lateral horizontal well to oil production and the effect of number and angle of branches, model resistance and injection well position on productivity have been studied. The results show that the productivity increases with the increase of number and angle of branches, but the increasing trend slows down. There is reciprocal interference between branch hole and main hole, which lead to the contribution difference of each branch. The injection well position has a great influence on the well yield, so choosing an appropriate flood pattern is very important to the production of horizontal multilateral well. The experimental result provides the basis for optimizing morphology of multilateral well and injection-production pattern.