裂缝-孔隙型枯竭气藏储气库一体化注采运行评价  

Evaluation of Underground and Surface Integrated Injection Production Operation in Gas Storage of Depleted Gas Reserve

作　　者：于洪敏 张亚雄[2] 牛保伦[2] 王志宝[3] 代全齐 刘静 王鹏[1,2] 孙静静 无[4] YU Hongmin;ZHANG Yaxiong;NIU Baolun;WANG Zhibao;DAI Quanqi;LIU Jing;WANG Peng;SUN Jingjing;无(Research and Development Center for the Sustainable Development of Co ntinental Sandstone Mature Oilfield by National Energy Administration,Beijing 100083,China;Petroleum Exploration&Production Research Institute,SINOPEC,Beijing 100083,China;Zhongyuan Petroleum Engineering Technology Research Institute,SINOPEC,Puyang 457001,China;Zhongyuan Exploration and Development Research Institute,SINOPEC,Puyang 457001,China)

机构地区：[1]国家能源陆相砂岩老油田持续开采研发中心,北京100083 [2]中国石化石油勘探开发研究院,北京100083 [3]中国石化中原油田石油工程技术研究院,河南濮阳457001 [4]中国石化中原油田勘探开发研究院,河南濮阳457001

出　　处：《油气与新能源》2024年第1期66-71,共6页Petroleum and new energy

基　　金：中国石油化工股份有限公司科技攻关项目“油藏-井筒-地面一体化模拟应用研究”(P18080)。

摘　　要：为诊断评价裂缝-孔隙型枯竭气藏储气库注采运行状况及单井注采能力,针对中原油田储气库,建立考虑应力敏感的裂缝-孔隙型储层-井筒-地面一体化模型,以一体化模拟为手段,以地层压力、注采气量界限为约束,分析储气库注采能力影响因素,诊断储气库注采运行制约瓶颈,评价储气库系统注采能力。研究表明:井口和井底压力、油管尺寸等对储气库注采气量影响较大;储气库气藏压力低于27 MPa,所受应力超过50 MPa,采气指数明显下降,应力敏感性更强;低压时可能存在临界携液情况,但无冲蚀影响;压力下合理注气量为71×10^(4)m^(3)/d,合理采气量43×10^(4)m^(3)/d。此研究可为裂缝-孔隙型储气库注采运行评价提供参考。In order to diagnose and evaluate the injection-production operation status and single well injectivity and productivity of fractured-porous gas storage,an integrated model of fractured-porous reservoir-wellbore-surface by considering stress sensitivity is proposed for the gas storage in Zhongyuan oilfield.An integrated simulation is utilized to analyze the influencing factors of the injectivity and productivity of gas storage,diagnose the limitations of injection-production operation status,and evaluate the injectivity and productivity of gas storage with the constraints of formation pressure and gas injection and production limits.The study indicates that wellhead and bottom-hole pressures and tubing size significantly impact the gas injection volume and production of gas storage.The gas reservoir pressure is lower than 27 MPa,and the stress suffered exceeds 50 MPa;the gas productivity index is significantly decreased,and the stress sensitivity is enhanced.There may be a critical unloading gas flow rate in the gas storage at low pressure,but there is no impact of erosion.The reasonable gas injection volume at the current pressure is 71×104 m^(3)/d,and the reasonable gas production is 43×10^(4)m^(3)/d.This study can provide a reference for evaluating fractured-porous gas reservoir injection-production operations.

关 键 词：裂缝-孔隙型 储气库 一体化 注采运行 注采能力 评价 

分 类 号：TE371[石油与天然气工程—油气田开发工程]