沈84-安12断块高含水期开发效果评价

Evaluation of the development effect of Block Shen84-An12 in high water cut stage

郑浩 阚立岩 马春华 宋考平

中海石油有限公司天津分公司，天津 塘沽 300452 辽河油田分公司勘探开发研究院，辽宁 盘锦 124010 大庆油田有限责任公司第四采油厂，黑龙江 大庆 163318 大庆石油学院提高油气采收率教育部重点实验室，黑龙江 大庆 163318

针对目前沈84-安12断块高含水期开发现状，应用油藏工程方法，从水驱开发效果评价指标体系入手，对注水利用率、耗水量、综合含水率及最终采收率等指标进行了客观分析。结果表明，该区块在历次完善注采井网、提高水驱控制程度、追求上产需要的同时，控水措施没有及时跟上。要改善目前含水上升状况，今后在开展稳油措施的同时，应进一步加强找、堵水等控水工作，以保证开发效果向好的方向发展。按照目前开发趋势预测，沈84-安12断块水驱采收率可达28.71%，可采储量可达18.39 Mt。

In connection with current status of exploitation of Block Shen84-An12,reservoir engineering method was applied to analyze injected water efficiency, water consumption, composite water cut and waterflood recovery factor objectively from evaluation index system of waterflooding effect. The result shows that as measures to improve flooding pattern, enhance waterflood control degree and increase production are carried out in the area, the measures to control water cut rising is not put forward timely. In order to improve
the present situation of water rising, it should not only take the measures of keeping oil production, but also take the measures of controlling water rising. Namely, going a step further to do the water detection/plugging works to improve development effect. According to the current development tendency, it is forecasted that the waterflood recovery factor of Block Shen84-An12 will be
28.71%and the recoverable reserves will be 18.39 MMt.