模拟改善大庆油田朝45区块的开发效果

Simulation of improving development effectiveness of Daqing oil field Chao 45 tract

大庆油田朝 45区块油层物性差 ,渗透率低 ,存在油层压力下降快 ,油井产量递减快 ,含水上升快等诸多问题 .为了改善朝 45区块开发效果 ,利用VIP软件对该区块进行数模研究 .在历史拟合的基础上 ,模拟了不同增产措施的开发效果 ,预测了 7种开发方案 .结果表明 :该区块由于存在隐裂缝 ,注水压力不宜过高 ;改善朝 45区块开发效果的优选方案为 :井网加密、面积注水改为线性注水、油井堵水、关高含水井、注水井调剖 ;实施井网加密时应综合利用油井堵水 ,关高含水井 ,注水井调剖等增产措施 ,以提高经济效益 ;预测该区块合理的注采比为 2 .

The oil reservoir physical properity of Daqing oil field Chao 45 tract is very poor, with low permeability, so the oil reservoir pressure keeps dropping, with quick reduction of output, and water cut goes up quickly. To find the waterflooding technique for low\|permeability oil field, improve the development effectiveness of Chao 45 tract, we simulate the tract's development history in VIP model. Based on the history matching, we stimulate the development effectiveness of various well stimulation, predict 7 kinds of development programs. The result of prediction is that the injection pressure should not be too high because of the subtle fractures; the best development project is in proper order infill well net\|work, linear injection, water plugging, shutting down high water cut well, water injection profile control; the best injection\|to\|production ratio is 2.