天然气勘探与开发2025，Vol.48Issue(4)：126-135,10.DOI:10.12055/gaskk.issn.1673-3177.2025.04.013
中国首例裂缝型高压地下储气库建库参数设计及注采实践
Construction parameter design and injection-production practice of China's first fractured high-pressure UGS
摘要
Abstract
Converting a depleted fractured ultra-high-pressure gas reservoir of Upper Permian Changxing Formation in the Tongluoxia structure of eastern Sichuan Basin fault-fold belt into a high-pressure underground gas storage(UGS)presents parameter design challenges.In this paper,the key parameters of UGS construction such as upper limit pressure,injection-production well number,and gas injection-production rate were designed using an integrated static-dynamic analysis method,based on the geological and development characteristics,as well as the evaluation of single-well injection-production capacity under different fracture distribution patterns,and the interaction design of working gas volume in different pressure intervals and number of wells,following the design strategy of"optimal interval selection,efficient injection and production,emergency support,and phased implementation".In addition,the geological and engineering understanding of UGS construction was deepened,and the parameters were optimized through pilot trials and injection-production practice.Research results are shown as follows:(i)Single-well productivity varies significantly depending on fracture development characteristics,and the simulated average rational production rates under different conditions can be used as the designed gas injection-production rates of new wells,i.e.,5.6×104-268.5×104 m3/d as the production rates and 69.7×104-214.2×104 m3/d as the injection rates.(ii)To complete the cyclical injection-production tasks,nine wells are needed with an upper limit pressure greater than 38 MPa.Considering surface conditions and numerical simulation results,the final design parameters are set as upper limit pressure of 40 MPa,storage capacity of 13.8×108 m3,working gas volume of 9.2×108 m3,cushion gas volume of 4.6×108 m3,average daily gas injection rate of 460×104 m3,and average daily gas production rate of 766×104 m3.(iii)In view of the surface conditions of the construction site,three injection-production platforms are deployed,and nine injection-production wells are arranged along the fracture-developed part of No.36 fault zone.(iv)As the newly deployed wells are put into production and the gas injection volume is increased,the working gas volume and storage capacity of the UGS reach the expectations gradually,indicating that increasing the number of wells is an effective way to enlarge storage space.(v)The Tongluoxia UGS project was completed and put into production on December 15,2024,and is currently in good operation.In conclusion,it is feasible to convert a depleted fractured ultra-high-pressure gas reservoir into a high-pressure UGS.The Tongluoxia UGS,as China's first successful case,provides a reference for UGS construction parameter design and operation.关键词
裂缝型气藏/超高压气藏/铜锣峡地下储气库/高压储气库/建库参数设计/合理产量/上限压力/注采井数Key words
Fractured gas reservoir/Ultra-high-pressure gas reservoir/Tongluoxia UGS/High-pressure UGS/UGS construction parameter design/Rational production rate/Upper limit pressure/Injection-production well number分类
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刘斐,刘晓旭..中国首例裂缝型高压地下储气库建库参数设计及注采实践[J].天然气勘探与开发,2025,48(4):126-135,10.基金项目
中国石油天然气股份有限公司"两峡"储气库重大专项(编号:K23-Z1-10). （编号:K23-Z1-10）
