微生物+化学复合驱提高高凝油油藏采收率室内实验  

Laboratory Test of Microbial Chemical Compound Flooding to Enhance Recovery Efficiency of High Condensate Oil Reservoirs

作　　者：温静[1] 肖传敏[1] 郭斐[1] 杨灿[1] 马静[1] 李晓风[1] 易文博 Wen Jing;Xiao Chuanmin;Guo Fei;Yang Can;Ma Jing;Li Xiaofeng;Yi Wenbo(PetroChina Liaohe Oilfield Company,Panjin,Liaoning 124010,China)

机构地区：[1]中国石油辽河油田分公司,辽宁盘锦124010

出　　处：《特种油气藏》2023年第1期87-92,共6页Special Oil & Gas Reservoirs

基　　金：中国石油科技重大专项“稀油高凝油大幅度提高采收率关键技术研究与应用”(2017E-1603)。

摘　　要：针对高凝油油藏析蜡冷伤害、水驱采收率低的问题,运用微生物高通量测序分析、化学驱实验评价方法,利用岩心物理模拟与CT扫描等手段,提出了微生物+化学复合驱组合提高高凝油采收率技术,研制了微生物化学复合驱配方,该体系兼有化学驱大幅度提高驱油效率及微生物降低原油蜡质组分双重优点,最后通过物模实验优化了微生物与化学驱配方段塞组合。实验结果表明:微生物+化学复合驱较水驱提高驱油效率35.19个百分点,较单一化学复合驱可提高驱油效率7.27个百分点,单位质量聚合物增油量提高了1.16 t/t。该研究为高凝油油藏开发后期方式转换、提高采收率提供有效接替技术。In view of the problems of high condensate oil reservoir,cold damage caused by wax precipitation and low recovery efficiency by water flooding,were the microbial high throughput sequencing analysis and experimental evaluation method for chemical flooding and used the core physical simulation and CT scanning and other means to propose the enhanced high pour-point oil recovery technology through microbial+chemical compound flooding combination and research the microbial-chemical compound flooding formula.The system has the advantages of chemical flooding greatly improving the oil displacement efficiency and microbe reducing the waxy composition of crude oil.Finally,the slug combination of microbial and chemical flooding formula is optimized by physical model experiment.The experimental result shows that:The microbial+chemical compound flooding can improve the oil displacement efficiency by 35.19%than the water flooding,and if compared with the single chemical compound flooding,it can improve the oil displacement efficiency by 7.27%,and the oil increment increases by1.16 t/t.This research provides an effective replacement technology for the mode conversion and enhanced oil recovery in the late development stage of high condensate oil reservoir.

关 键 词：微生物 化学复合驱 提高采收率 高凝油 沈84-安12块 

分 类 号：TE311[石油与天然气工程—油气田开发工程]