CO2驱提高采收率方法在深层低渗透油藏的应用——以中原油田胡96块油藏为例  

Application of CO2-EOR in the deep low permeability reservoir--by taking Hu 96 block of Zhongyuan oilfield as an example

作　　者：田巍[1] TIAN Wei(Exploration&Development Research Institute of Zhongyuan Oilfield Company,SINOPEC,Puyang,Henan 457001,China)

机构地区：[1]中国石化中原油田分公司勘探开发研究院,河南濮阳457001

出　　处：《石油地质与工程》2020年第4期50-54,共5页Petroleum Geology and Engineering

基　　金：河南省博士后经费资助“深层高压低渗油藏CO2驱注气能力变化及调整对策”(2018120)。

摘　　要：针对深层低渗油藏开发中存在的技术难点,以中原油田胡96块为目标油藏,采用室内实验与数值模拟相结合的方法,创新形成了深层低渗油藏CO2驱提高采收率技术体系,定量研究了地层压力及烃组分对最小混相压力的影响程度,形成了注气恢复压力后开发可达到在原始地层条件下连续CO2驱的效果的认识;优化了深层高压低渗油藏CO2驱最佳注采参数。研究成果现场应用已取得明显成效,达到大幅度提高采收率的目的,丰富和发展了油气田开发技术体系。In view of technical difficulties in development of deep low permeability reservoirs,by taking Hu 96 block of Zhongyuan oilfield as the target reservoir,a technical system of EOR by CO2 flooding in deep low permeability reservoirs has been innovated by combining indoor experiments with numerical simulation,and the influence of the formation pressure and hydrocarbon components on the minimum miscible pressure has been studied.It is realized continuous CO2 flooding can be achieved under original formation condition after gas injection to restore pressure,and the optimal injection and production parameters of CO2 flooding in deep high pressure and low permeability reservoirs are optimized.The field application has achieved good results,achieved a big increase in oil recovery,and enriched and developed the field development technology.

关 键 词：深层低渗 CO2驱 提高采收率 连续驱油 

分 类 号：TE357.42[石油与天然气工程—油气田开发工程]