储气库注气提量安全评估方法及应用  

Safety Assessment Method and Application of Gas Injection Process System After Improving Production Capacity for Underground Gas Storage

作　　者：宋成立 闫敏辉[2] 袁海涛 张炳余 罗金恒 李丽锋 SONG Chengli;YAN Minhui;YUAN Haitao;ZHANG Bingyu;LUO Jinheng;LI Lifeng(State Key Laboratory of Oil and Gas Equipment,CNPC Tubular Goods Research Institute,Xi'an,Shaanxi 710077,China;PetroChina Liaohe Oilfield Company,Panjin,Liaoning 124010,China;CPMC Tianjin Design Institute,Tianjin 300457,China)

机构地区：[1]中国石油集团工程材料研究院有限公司,油气钻采输送装备全国重点实验室,陕西西安710077 [2]中国石油辽河油田公司,辽宁盘锦124010 [3]中油工程北京项目管理公司天津设计院,天津300457

出　　处：《石油管材与仪器》2024年第6期43-48,共6页Petroleum Tubular Goods & Instruments

基　　金：中国石油科学研究与技术开发项目“地下储气库高效建设与安全运行关键技术研究”(编号:2023YQX10604)。

摘　　要：在保证储气库安全运行的前提下,最大程度地提高在役储气库运行产量是快速、经济、有效增加调峰气量的一种方式。提出一种储气库提量运行安全评估的方法,以压力调压阀、旋风分离器、过滤分离器、压缩机、工艺管道和集输管道等关键设备设施为评估对象,分析各设备设施提量运行后关键参数发生的变化,并计算校核各个关键参数以评估整个系统是否均在负荷范围内。以国内S储气库为应用实例,核算了其注气规模从1200×10^(4) Nm^(3)/d提量至1250×10^(4) Nm^(3)/d后的各关键设备设施的适应性,结果显示:S储气库已建调节阀阀门开度在20%~85%范围内,已建的2台旋风分离器、2台过滤分离器、8台电驱往复式压缩机组最大处理量均大于1250×10^(4) Nm^(3)/d,站内工艺管道和站外集输管道流速均小于15 m/s,集输管道的起末点压降小于1.5 MPa,且提量后各设备设施的运行压力也小于设计压力。由此表明,S储气库已建注气系统提量后各关键设备设施均在负荷范围内运行,提量后运行参数通过安全评估。Under the premise of ensuring the safe operation of gas storage,maximizing the production volume of in-service gas storage is a fast,economical and effective way to increase the peak gas volume.This paper presents a method to evaluate the safety of gas injection process system after improving production capacity for underground gas storage.Key equipment and facilities such as pressure regulator,cyclone separator,filter separator,compressor,process pipeline and gathering pipeline are identified for evaluation.The changes of key parameters of each equipment and facilities after improving production capacity are analyzed as well as calculated and checked to evaluate whether all of them are within the loading range.Taking the domestic S gas storage as an application example,the adaptability of key equipment and facilities after the gas injection scale is increased from 1200×10^(4) Nm^(3)/d to 1250×10^(4) Nm^(3)/d is assessed.The results show that the built valve opening of S gas storage is in the range of 20%~85%.The maximum capacity of the two cyclone separators,two filtration separators,and eight electrically-driven reciprocating compressor units are all greater than 1250×10^(4) Nm^(3)/d.The flow rate of the process pipeline inside the station and the gathering pipeline outside the station is less than 15 m/s.The pressure drop at the beginning and end points of the gathering pipeline is less than 1.5 MPa.The operating pressures of the equipment and facilities are less than the design pressure after the capacity is raised.This indicates that all key equipment and facilities of the built gas injection system of S gas storage are operating within the load range after improving production volume.S gas storage can pass the safety assessment of the operation with the increase in volume up to 1250×10^(4) Nm^(3)/d.

关 键 词：储气库 注气系统 提量运行 安全评估 

分 类 号：TE822[石油与天然气工程—油气储运工程]