实验设计方法在低渗油藏CO_2驱设计优化中的应用
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摘要
将二水平析因实验设计方法引入CO_2驱设计中,综合考虑储层垂向渗透率与倾角、相渗滞后、注采井型、注采方式等因素,通过统计分析获取关键因素排序及各因素间交互作用等敏感性信息,确定适合低渗油藏条件的CO_2驱注采方式、注采井型及其优化组合。在A油藏CO_2驱方案研究中,利用大斜度井连续注CO_2,采用生产气油比与油藏压力实施开关井控制的注采方法增加注入能力,缩短开发周期,综合优化采收率与埋存效果。
The two level factorial experimental design method is introduced into the CO_2 flooding design,and the factors such as vertical permeability and dip angle,relative permeability delay,injection production well type and injection production mode are considered comprehensively,to obtain sensitive information such as ranking of key factors and interactions among factors through statistical analysis and to determine CO_2 flooding production mode,injection production well type and its optimal combination for low permeability reservoir conditions. Continuous injection of CO_2 in highly deviated wells is put forward in the research of CO_2 flooding scheme in A reservoir. Production gas oil ratio and reservoir pressure are used to implement switch and well control injection production method to increase injection capacity,shorten development cycle and comprehensively optimize oil recovery and storage effect.
The two level factorial experimental design method is introduced into the CO_2 flooding design,and the factors such as vertical permeability and dip angle,relative permeability delay,injection production well type and injection production mode are considered comprehensively,to obtain sensitive information such as ranking of key factors and interactions among factors through statistical analysis and to determine CO_2 flooding production mode,injection production well type and its optimal combination for low permeability reservoir conditions. Continuous injection of CO_2 in highly deviated wells is put forward in the research of CO_2 flooding scheme in A reservoir. Production gas oil ratio and reservoir pressure are used to implement switch and well control injection production method to increase injection capacity,shorten development cycle and comprehensively optimize oil recovery and storage effect.
引文
[1]郭平,李士伦,杜志敏,等.低渗透油藏注气提高采收率评价[J].西南石油学院学报,2002,24(5):46-50.
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[4]段景杰,姚振杰,黄春霞,等.特低渗透油藏CO2驱流度控制技术[J].断块油气田,2017,24(2):190-193.
[5] KOVSCEK A R,CAKICI M D. Geologic Storage of Carbon Dioxide and Enhanced Oil Recovery. II. Co-Optimization of Storage and Recovery[J]. Energy Conversion&Management,2005,46(11/12):1941-1956.
[6] KALLA S,WHITE C D. Efficient Design of Reservoir Simulation Studies for Development and Optimization[J]. SPE Reservoir Evaluation&Engineering,2007,10(6):629-637.
[7] DELLO L,MIYAKE S,KAWAGUCHI K,et al. Improved Oil Recovery by Pattern Gas Injection Using Horizontal Wells in a Tight Carbonate Reservoir[J]. The 7thAbu Dhabi International Petroleum Exhibition and Conference,1996:791-801.
[8] ZULOAGA-MOLERO P,YU W,XU Y F,et al. Simulation Study of CO2-EOR in Tight Oil Reservoirs With Complex Fracture Geometries[J]. Scientific Reports,2016(6):1-11.
[9] ZHANG Y,DI Y,YU W,et al. A Comprehensive Model for Investigation of CO2-EOR With Nanopore Confinement in the Bakken Tight Oil Reservoir[C]∥SPE Technical Conference and Exhibition. 2017.
[2]许志刚,陈代钊,曾荣树. CO2的地质埋存与资源化利用进展[J].地球科学进展,2007,22(7):698-706.
[3]李保振,张贤松,康晓东,等.基于响应面法的海上油藏注气参数设计方法[J].西南石油大学学报(自然科学版),2015,37(2):101-106.
[4]段景杰,姚振杰,黄春霞,等.特低渗透油藏CO2驱流度控制技术[J].断块油气田,2017,24(2):190-193.
[5] KOVSCEK A R,CAKICI M D. Geologic Storage of Carbon Dioxide and Enhanced Oil Recovery. II. Co-Optimization of Storage and Recovery[J]. Energy Conversion&Management,2005,46(11/12):1941-1956.
[6] KALLA S,WHITE C D. Efficient Design of Reservoir Simulation Studies for Development and Optimization[J]. SPE Reservoir Evaluation&Engineering,2007,10(6):629-637.
[7] DELLO L,MIYAKE S,KAWAGUCHI K,et al. Improved Oil Recovery by Pattern Gas Injection Using Horizontal Wells in a Tight Carbonate Reservoir[J]. The 7thAbu Dhabi International Petroleum Exhibition and Conference,1996:791-801.
[8] ZULOAGA-MOLERO P,YU W,XU Y F,et al. Simulation Study of CO2-EOR in Tight Oil Reservoirs With Complex Fracture Geometries[J]. Scientific Reports,2016(6):1-11.
[9] ZHANG Y,DI Y,YU W,et al. A Comprehensive Model for Investigation of CO2-EOR With Nanopore Confinement in the Bakken Tight Oil Reservoir[C]∥SPE Technical Conference and Exhibition. 2017.