带油环凝析气藏注气提采协同储气库建设研究  

Construction of coordinated gas storage for gas injection and extraction of condensate gas reservoir with oil ring

作　　者：糜利栋 曾大乾[1] 刘华[1] 郭艳东 陈民波 张广权[1] 张俊法 MI Lidong;ZENG Daqian;LIU Hua;GUO Yandong;CHEN Minbo;ZHANG Guangquan;ZHANG Junfa(Sinopec Petroleum Exploration and Production Research Institute,Beijing 100083,China;Research Institute of Exploration and Development,Henan Oilfield Branch Company,Sinopec,Nanyang,Henan 473000,China)

机构地区：[1]中国石油化工股份有限公司石油勘探开发研究院,北京100083 [2]中国石油化工股份有限公司河南油田分公司勘探开发研究院,河南南阳473000

出　　处：《世界石油工业》2025年第2期89-98,共10页World Petroleum Industry

基　　金：中国石油化工股份有限公司科技部项目“中原储气库群全局系统优化及智能生产关键技术”(P24089)。

摘　　要：为了探究带油环凝析气藏高效开发及地下储气库建设的有效途径,实现提高凝析油采收率、油环原油采收率和储气的多重目标,开展了注气提高采收率协同储气库建设研究。采用数值模拟方法,以B区带油环凝析气藏为具体研究实例,对夏注冬采直接建库模式、循环注气提采协同建库模式等多种方案进行对比优选,并利用气藏工程方法辅助设计建库参数。研究结果表明,循环注气提采协同建库模式最契合B区现状。通过注气保压可抑制凝析气反凝析,提升凝析油采收率。在运行至气油比趋于稳定低值时,转入夏注冬采阶段,夏季注气使地层压力恢复至高于露点压力,将反凝析产生的凝析油蒸发抽提成气相,冬季调峰采气时采出凝析油。经若干循环周期,采出气组成与注入气组分一致,相同压力下采出气油比趋于稳定后转为排液。利用相关方法合理设计了储气库库容、运行压力、工作气量、井网等建库参数,并预测了最佳建库模式方案指标。结论认为,带油环凝析气藏提高采收率协同储气库建设具备兼顾提高凝析油采收率、油环原油采收率和储气的三重功能,具有大规模工业化推广应用的潜力。Taking condensate gas reservoir with oil ring as the research object,the construction of collaborative gas storage with gas injection and enhanced oil recovery is studied.The mechanism of gas injection and extraction in condensate gas reservoir with oil ring is defined,including the mechanism of gas injection and pressure maintenance to improve condensate oil recovery,the mechanism of summer injection and winter production to improve recovery,and the mechanism of liquid drainage and expansion to improve oil ring recovery.Taking area B as an example,the numerical simulation method is used to optimize the direct reservoir construction mode of summer injection and winter production,the collaborative reservoir construction mode of cyclic gas injection and extraction,and the collaborative reservoir construction mode of cyclic gas injection and extraction,and the collaborative reservoir construction mode of cyclic gas injection and extraction is the most suitable for the current situation of area B.Condensate gas reverse condensate is produced by gas injection and pressure maintenance to improve condensate oil recovery.When the gas-oil ratio tends to a stable low value,it will be transformed into a stage of summer injection and winter production to improve condensate recovery and cooperate with gas storage and peak regulation.When formation pressure is restored by gas injection in summer to higher than dew point pressure,the condensate generated by formation reverse condensate will be evaporated and extracted into gas phase,and the condensate will be extracted with peak regulation gas production in winter.After several cycles,the composition of produced gas is consistent with that of injected gas.When the ratio of produced gas to oil tends to be stable under the same pressure,it turns to drainage.Using gas reservoir engineering and numerical simulation method,reservoir capacity,operating pressure,working gas volume,well pattern and other parameters are designed,and the optimal scheme index of reservoir construction mod

关 键 词：带油环凝析气藏 提高采收率 天然气地下储气库 运行模式 排液扩容 

分 类 号：TE122[石油与天然气工程—油气勘探]