“弱凝胶+水基微球”组合调驱数值模拟量化的表征研究  

Quantitative Characterization of Numerical Simulation of "Weak Gel+Water-Based Microspheres" Combined Modulation

作　　者：周振 张云宝[1] 王承州 詹兆海 郑旭林 陈丹丰 Zhou Zhen;Zhang Yunbao;Wang Chengzhou;Zhan Zhaohai;Zheng Xulin;Chen Danfeng(Key Laboratory of Improving Oil and Gas Recovery of Ministry of Education,Northeast Petroleum University,Daqing Heilongjiang 163318,China)

机构地区：[1]东北石油大学提高油气采收率教育部重点实验室,黑龙江大庆163318

出　　处：《辽宁石油化工大学学报》2023年第4期72-77,共6页Journal of Liaoning Petrochemical University

基　　金：国家“十三五”重大专项子课题(2016ZX05058-003-010)。

摘　　要：为优化渤海B油田注水开发油田调驱效果,利用CMG数值模拟软件,围绕“弱凝胶+水基微球”组合调驱提高采收率效果展开了优化研究。根据该油田已知的地质油藏属性,对生产井的历史数据进行历史拟合,建立了实际三维地质模型,对影响单一段塞弱凝胶调驱、单一段塞水基微球调驱以及“弱凝胶+水基微球”组合调驱效果的因素进行分析优化设计,并针对相关生产指标进行了预测。结果表明,“弱凝胶+水基微球”组合调驱效果明显优于单一段塞调驱效果;通过数值模拟优选出调剖剂(弱凝胶)最佳注入工艺参数:质量分数为0.50%,注入量为0.00011 PV,A2H井、A3H井注入速度分别为240、200 m^(3)/d;通过数值模拟优选出调驱剂(水基微球)最佳注入工艺参数:质量分数为0.30%,注入量为0.00300 PV,A2H井、A3H井注入速度均为500~600 m^(3)/d。组合调驱方案能有效达到降水增油和提高原油采收率的目的。In order to optimize the effect of Bohai oilfield regulation and flooding in B water injection development,the numerical simulation software of CMG reservoir was used to carry out optimization research on the effect of "weak gel+water-based microspheres" combined displacement to improve recovery,and according to the known geological reservoir properties of the oilfield,the actual three-dimensional geological model was established,and the historical fitting was carried out in combination with the previous production history.The factors affecting the modulation effect of single section of plugged weak gel modulation,single section of water-based microsphere modulation and driving and the factors affecting the modulation effect of "weak gel+waterbased microspheres" were analyzed and optimized,and the related production indexes were predicted.The results show that the combined modulation effect of "weak gel+water-based microspheres" is significantly better than that of a single segment of plug modulation and driving.The optimal injection process parameters of the modulated blocking agent(weak gel) were selected through numerical simulation:the injection mass fraction is 0.50% crosslinker,the injection amount is 0.000 11 PV,the injection speed of A2H well is 240 m^(3)/d,and the injection speed of A3H well is 200 m^(3)/d.The optimal injection process parameters of the modulator(water-based microspheres) were selected through numerical simulation:the injection mass fraction is 0.30%,the injection amount is optimally 0.003 00 PV,and the injection speed of A2H and A3H wells is about 500~600 m^(3)/d.This design scheme can effectively achieve the purpose of increasing precipitation and oil recovery.

关 键 词：组合调驱 数值模拟 注入参数优化 提高采收率 方案设计 

分 类 号：TE357[石油与天然气工程—油气田开发工程]