Comparative studies on numerical sensitivity of different scenarios of enhanced oil recovery by water-alternating-gas(CO_(2))injection

作     者：Saddam Mohammed Mohammed Nasser Achinta Bera Vivek Ramalingam Saddam Mohammed Mohammed Nasser;Achinta Bera;Vivek Ramalingam

作者机构：School of Energy TechnologyPandit Deendayal Energy UniversityGandhinagarGujarat382007India 

出 版 物：《Petroleum Research》 (石油研究（英文）)

年 卷 期：2023年第8卷第4期

页      面：505-513页

核心收录：

学科分类：0202[经济学-应用经济学] 02[经济学] 0709[理学-地质学] 0819[工学-矿业工程] 0808[工学-电气工程] 020205[经济学-产业经济学] 0818[工学-地质资源与地质工程] 0708[理学-地球物理学] 0807[工学-动力工程及工程热物理] 0816[工学-测绘科学与技术] 

基　　金：Department of Petroleum Engineering Computer Modelling Group, CMG 

主　　题：Water-alternating-gas Enhanced oil recovery Sensitivityanalysis Modelingand simulation Simultaneouslybut not separately water-alternating-gas(SS-WAG) Simultaneously pressure maintenance and WAG 

摘      要：Enhanced oil recovery by CO_(2) injection technology(CO_(2)-EOR)plays a crucial role in enhancing oil production and the permanent sequestration of anthropogenic CO_(2) in depleted oil ***,the availability of CO_(2) in oil field locations and its mobility in contrast with reservoir fluids are prime challenges in CO_(2)-*** cost of CO_(2) and its availability at the oil fields has prompted investigations on efficient injection of CO_(2) at the fields to achieve the best sweep efficiency *** strategies such as water-alternating-gas(WAG),simultaneous vertical and horizontal WAG,simultaneous water injection into the aquifer and vertical WAG,water and gas injection simultaneously but separately(SS-WAG),and water and gas injection simultaneously but not separately(SNS-WAG)play a significant role,as well as the purity of CO_(2).In this work,the significance of the above criteria was investigated indi-vidually and in *** coupled sequence of injection rate,soaking time,WAG ratio,and purity of injected CO_(2) for enhancement of oil production were delineated.A realistic reservoir simulation model conceptualizing the CO_(2)-EOR system with five spot injection patterns was developed by the company *** history-matched model that was developed was used to investigate the sensitivity of the coupled effects to the criteria listed above on oil *** investigations quantitatively emphasized that purity and soaking time of CO_(2) have an inverse effect in the oil production rate and that SNS-WAG resulted in a better oil production rate than SS-WAG.