储气库压差发电嵌入方式与工艺模拟分析  

Simulation and analysis of embedding modes and processes for differential pressure power generation in gas storage reservoirs

作　　者：周军 叶展鹏 林宇 梁光川 胡承强 蒋轩 王涛 ZHOU Jun;YE Zhanpeng;LIN Yu;LIANG Guangchuan;HU Chengqiang;JIANG Xuan;WANG Tao(Petroleum Engineering School,Southwest Petroleum University,Chengdu,Sichuan,China;Research Institute of Gathering and Transportation Engineering Technology,PetroChina Southwest Oil&Gasfield Company,Chengdu,Sichuan,China;PipeChina West East Gas Pipeline Company,Shanghai,China;CNOOC(Shenzhen)Energy Investment Co.,Ltd.,Shenzhen,Guangdong,China)

机构地区：[1]西南石油大学石油与天然气工程学院 [2]中国石油西南油气田公司集输工程技术研究所 [3]国家石油天然气管网集团有限公司西气东输分公司 [4]中海油(深圳)能源投资有限公司

出　　处：《石油与天然气化工》2025年第1期69-77,共9页Chemical engineering of oil & gas

基　　金：国家自然科学基金青年科学基金项目(51704253);国家自然科学基金面上项目(52474084)。

摘　　要：目的探索并推动储气库天然气压差发电技术的规模化应用,促进储气库向低碳发展模式转型,同时弥补国内在压差发电机组嵌入储气库可行性分析方面的不足。方法围绕储气库天然气压差发电注采流程,分析压差发电在储气库中的嵌入方式,建立注采站单台、注采站双台、井口、井场及联合发电共5种嵌入方式下压差发电工艺仿真模型,同时分析天然气压差发电影响因素、降压运行方式、分流运行方式与不同嵌入方式下压差发电运行结果及参数变化情况。结果针对注采站单台嵌入方式,为保障机组安全运行,可以采用分流运行方式控制进气流量,或降压运行方式对进气压力进行控制;双台嵌入方式可完全回收注采站压力能;井场嵌入方式仅比井口嵌入方式减少发电功率251.88 kW,约3.4%。结论该研究有利于了解嵌入方式对储气库系统低碳运行的影响,明确不同嵌入方式的优劣性,平衡嵌入压差发电的储气库系统运行碳排放量与机组的嵌入数量,对储气库嵌入压差发电机组项目的规划建设具有指导意义。Objective This paper aims to explore and facilitate the large-scale application of natural gas differential pressure power generation technology in gas storage reservoirs,facilitating the transition to a low-carbon development model for gas storage reservoirs,it also addresses the current gap in China regarding the feasibility analysis of embedding differential pressure generator sets into gas storage reservoirs.Method This paper focused on the natural gas reservoir differential pressure power generation injection and extraction process,analyzed the embedding modes of differential pressure power generation in the reservoirs,established the simulation models of differential pressure power generation processes under five embedding modes such as single unit in the injection and extraction station,double units in the injection and extraction station,wellhead,wellsite,and co-generation.At the same time,the simulation analyzed the influencing factors of the natural gas differential pressure power generation,the pressure reduction operation mode,the diversion operation mode,the results of the operation of the differential pressure power generation,and the parameter changes under different embedding modes.Result For the single-unit embedding mode of the injection and extraction station,in order to ensure the safe operation of the unit,diversion operation could be used to control the intake flow rate,or the intake pressure could be controlled by the pressure-reducing operation method;the double-unit embedding mode could completely recover the pressure energy of the injection and extraction station;and the wellsite embedding mode could only reduce the power generation rate by 251.88 kW,about 3.4%,compared with the wellhead embedding mode.Conclusion This study is conducive to understanding the impact of embedding modes on the lowcarbon operation of the gas storage reservoirs,clarifying the advantages and disadvantages of different embedding modes,balancing the carbon emissions from the operation of the gas storage reservoir

关 键 词：储气库 压差发电 工艺仿真 发电功率 嵌入方式 

分 类 号：TE972[石油与天然气工程—石油机械设备] TM619[电气工程—电力系统及自动化]