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特高含水油藏深部调驱体系三维物理模拟

特高含水油藏深部调驱体系三维物理模拟

Physical simulation on system of deep profile control and flooding on high water cut reservoir

Physical simulation on system of deep profile control and flooding on high water cut reservoir

doi:
10.3724/SP.J.1249.2018.02179
摘要:
以孤岛油田中一区Ng3注聚区为目标油藏,研究聚二乙烯基苯(divinylbenzene-co-acrylamide, DCA)微球-强乳化体系聚驱后提高采收率的能力.针对该油藏特点,设计非均质岩心物理模拟实验,优化DCA微球-强乳化体系的注入参数及微球粒径.以相似准则为原理设计三维非均质模型,用电阻率法测试不同驱替阶段含油饱和度变化,设计聚驱-井网调整-深部调驱和井网调整-聚驱-深部调驱2种实验方案.结果表明,DCA微球-强乳化体系在聚驱后仍可提高采收率8.3%左右;DCA微球-强乳化体系可封堵复杂的水流通道,对于高度分散的剩余油可有效提高采收率.
Abstract:
Gudao Oilfield Zhongyiqu Ng3 block is selected as target reservoir for studying the ability of increasing oil recovery by divinylbenzene-co-acrylamide (DCA) microspheres and enhanced emulsification system after polymer flooding. According to the characteristics of the target reservoir,a heterogeneous core physical simulation experiment is designed for optimizing injection parameters and particles sizes. Three dimensional heterogeneous model is devised in the principal of the similarity criterion. Through measuring electrical resistivity, the residual oil distributions are characterized at different flooding stage. Two design schemes are introduced,one is the polymer flooding-well pattern adjustment-deep profile mobility control and the other is well pattern adjustment-polymer flooding-deep profile mobility control. The results show that the recovery efficiency is improved 8.3% by DCA and enhanced emulsification system after polymer flooding. DCA and enhanced emulsification system could plug complex fluid-fingering channels. Attributed to these excellent properties,DCA and enhanced emulsification system is confirmed as a reasonable enhanced oil recovery method for reservoirs with highly dispersed residual oil.
作者 史雪冬 岳湘安 凌生财 董明达 孔彬
Author: SHI Xuedong YUE Xiang'an LING Shengcai DONG Mingda KONG Bin
作者单位 中国石油大学 (北京)石油工程教育部重点实验室,北京,102249
期 刊: 深圳大学学报(理工版) ISTIC EI SCI PKU CSSCI
Journal: Journal of Shenzhen University(Science & Engineering)
年,卷(期) 2018, 35(2)
分类号 TE357.12
关键词: 油气田开发 知识脉络 井网调整 知识脉络 聚合物微球 知识脉络 物理模拟 知识脉络 剩余油分布 知识脉络 提高采收率 知识脉络
Keywords: oilfield development well pattern adjustment polymer microspheres physical simulation distribution of remaining oil enhanced recovery
机标分类号
基金项目 国家科技重大专项基金资助项目(2016ZX05050012)National Science and Technology Major Special Project of China
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