措施优选实现井组控水稳油

扶余油田是一个已开发40多年的老油田,先后经历了3次大的井网调整,井距和排距变小,综合含水率上升速度加快,目前有的区块含水率已经达到95.3%,给油田上产和稳产带来很大困难。油田的区块由多个以水井为中心的注采井组组成,要想改善区块的开发效果及提高采收率,就要从井组入手,针对不同的井组采取不同的措施来改善井组的开发效果,从而达到改善区块整体的开发效果。以典型井组排块为例,通过对动、静态资料的充分分析,找出了井组目前存在的问题,对一些措施与对策分别进行可行性论证研究,最后筛选出调剖应在二次采油高含水率开发阶段实施,以此来减缓井组的三大矛盾,进行层内挖潜,控制层内局部强水淹,控制综合含水率上升速度,从而达到井组稳产的目的,为老油田稳产上产和高效开发积累了宝贵经验。

Implementation of stable production and watercut control for well group by optimizing measures

Fuyu Oilfield has developed for 40 years. This oilfield has three times adjustment of well patterns with a small well spacing and the distance between rows. The watercut increases very fast and the watercuts in some blocks have reached 95.3%, which brings many difficulties for stable production and watercut control. One block is composed of some well groups, which has a injection well at centre. In order to improve the developing effect and get a good recovery factor, it is a good way to research the well g...