柳赞中区合理提液技术政策界限研究与应用  

Research and Application of Policy Limits for Reasonable Fluid Production Increase in Liuzan Central District

作　　者：李迎辉 李晓萌 Li Yinghui;Li Xiaomeng(Jidong Oilfield Company of CNPC,Tangshan Hebei 063229)

机构地区：[1]中国石油冀东油田公司,河北唐山063229

出　　处：《中外能源》2022年第7期57-62,共6页Sino-Global Energy

摘　　要：柳赞中区油藏为复杂断块构造岩性油藏,处于高含水开发阶段,生产层数多,多层合采层间矛盾突出,水驱动用程度低。提液技术是一种可以放大生产压差,改善油藏层间矛盾,提高水驱动用程度的有效手段。应用油藏工程和数值模拟方法,对该油藏合理提液时机与技术政策进行研究,结果表明:对于多层开发层间干扰严重的油藏,提液是高含水—特高含水期保持稳产和提高采收率的有效开发模式。柳赞中区合理的提液时机含水率大于90%,合理采液速度4%~6%,合理的注采比1.0~1.1,合理生产压差8~12MPa。通过实施提液技术措施取得了较好的增油效果,措施有效率100%,13口井日产液增加665m^(3),日产油增加66.6t,动液面下降624m,含水下降4.7个百分点,阶段累积增油13149t。柳赞中区油藏提液适应性与技术政策研究及实践,可为南堡陆地同类型油藏提液提供较好的借鉴经验。The oil reservoirs in Liuzan central district are structural lithologic ones with complex fault block,which are in the stage of high water cut development.There are many layers of production,the contradiction between multi-layer combined production layers is prominent,and the producing degree of water drive is low.The technology for increasing fluid production is an effective means to amplify production pressure difference,improve inter-layer contradiction and increase producing degree of water drive.In this paper,reservoir engineering and numerical simulation are applied to studying the reasonable timing and technical policy for fluid production increasing in this reservoir.The results show that fluid production increasing is an effective development mode of stable production and enhanced oil recovery in high-extra high water cut period for the oil reservoirs greatly interfered by multi-layer developed interlayer.The water content at the reasonable timing of fluid production increasing is greater than 90%,the reasonable fluid production rate is 4%-6%,the reasonable injection-production ratio is 1.0-1.1,and the reasonable production pressure difference is 8-12MPa in Liuzan central district.The implementation of the fluid production increasing brings good effect of oil production increase.The effective rate of the measures is 100%.The daily fluid production increases by 665m^(3),the daily oil production increases by 66.6t,and the dynamic liquid level decreases by 624m.The water cut drops by 4.7 percentage,and the staged cumulative oil increase is 13149t.Research and application of adaptability and technical policy of fluid production increase in Liuzan central district have guiding significance for the development of the same type of oil reservoirs.

关 键 词：注水开发油藏 提液机理 提液时机 合理技术政策 

分 类 号：TE357.6[石油与天然气工程—油气田开发工程]