浅薄层稠油油藏二氧化碳采油技术研究与应用  

Carbon dioxide oil recovery technology for shallow heavy oil reservoir Research and Application

作　　者：杨晓勇[1] 方舒[1] 肖江河 魏林平 Yang Xiaoyong;Fang Shu;Xiao Jianghe;Wei Linping(No.2 Oil Production Plant of Henan Oilfield Branch,Henan Nanyang 473400)

机构地区：[1]河南油田分公司采油二厂,河南南阳473400

出　　处：《石化技术》2021年第9期146-147,共2页Petrochemical Industry Technology

摘　　要：二氧化碳采油技术在中深层油藏取得了较好的应用效果,但在浅薄层稠油油藏应用过程中,受埋藏浅、地层压力低、地层温度低的影响,二氧化碳不能达到超临界状态,其作用机理还需研究明确。通过室内实验对二氧化碳在浅薄层稠油的溶解降黏机理以及技术适应性进行研究,总结归纳出二氧化碳采油技术在浅薄层适应条件,针对多轮次二氧化碳采油效果递减的问题,优化了设计参数,有效改善了浅薄层稠油油藏开发效果。Carbon dioxide oil recovery technology has achieved good application effect in medium and deep reservoirs,but in the application process of shallow and thin heavy oil reservoirs,due to the influence of shallow burial,low formation pressure and low formation temperature,carbon dioxide can not reach supercritical state,so its mechanism should be further studied.Through laboratory experiments,the mechanism and technical adaptability of carbon dioxide dissolution and viscosity reduction in shallow and thin layers are studied,and the suitable conditions of carbon dioxide oil recovery technology in shallow and thin layers are summarized,In view of the decline of multiple rounds of carbon dioxide oil recovery,the design parameters are optimized and the development effect of shallow thin heavy oil reservoir is effectively improved.

关 键 词：浅薄层稠油 二氧化碳采油 蒸汽吞吐 作用机理 

分 类 号：TE357.7[石油与天然气工程—油气田开发工程]