Experimental research of condensate blockage and mitigating effect of gas injection
作者机构:State Key Lab of Oil and Gas Reservoir Geology and ExploitationSouthwest Petroleum UniversityChengduChina Experimental Test Research Institute of XinJiang Oilfield CompanyPetro ChinaKaramayChina
出 版 物:《Petroleum》 (油气(英文))
年 卷 期:2018年第4卷第3期
页 面:292-299页
学科分类:0709[理学-地质学] 0819[工学-矿业工程] 0808[工学-电气工程] 07[理学] 070202[理学-粒子物理与原子核物理] 0820[工学-石油与天然气工程] 0817[工学-化学工程与技术] 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] 0815[工学-水利工程] 0816[工学-测绘科学与技术] 0827[工学-核科学与技术] 0813[工学-建筑学] 0703[理学-化学] 0814[工学-土木工程] 0702[理学-物理学]
主 题:Condensate blockage Experiment method CO2 injection Injection volume
摘 要:The condensate blockage causes a substantial decrease in well productivity for gas condensate *** on the previous studies,a novel experimental method was designed to evaluate condensate blockage and the mitigating effect of gas *** method considers the stacking effect in the near wellbore region and the gas flow in the far wellbore *** is an intermediate vessel containing condensate gas at the entrance of core holder in the experimental *** the process of pressure depletion experiment in a long core model,the vessel is connected to the core and the pressure of the vessel remains above the dew point *** seriousness of condensate blockage is investigated by this *** pressure drops to maximum retrograde condensation pressure,the gas permeability decreases by 80%compared with the initial gas *** experiments were conducted to study the removal effect of different injection fluids and different injection *** results show that CO2 injection is more effective than methanol in mitigating condensate blockage and the optimal CO2 injection volume is around 0.15 HCPV。