盐穴压缩空气储能库注采井筒体系优化设计  

Design optimization of injection and production wellbore system in salt-cavern compressed air energy storage

作　　者：万继方 纪文栋 李景翠 孙养清 赵永安[3] 罗一峰 吴启春 WAN Jifang;JI Wendong;LI Jingcui;SUN Yangqing;ZHAO Yong'an;LUO Yifeng;WU Qichun(China Energy Digital Technology Group Co.,Ltd.,Beijing 100022,China;School of Mechanical Engineering,Yangtze University,Jinzhou,Hubei 434023,China;Baoshan Iron&Steel Co.,Ltd.,Shanghai 201901,China;Petro-king Energy Technology Co.,Ltd.,Huizhou,Guangdong 516000,China;Jianhu Hongda Valve Fittings Co.,Ltd.,Jianhu,Jiangsu 224700,China)

机构地区：[1]中能建数字科技集团有限公司 [2]长江大学机械工程学院 [3]宝山钢铁股份有限公司 [4]百勤能源科技(广东)股份有限公司 [5]建湖县鸿达阀门管件有限公司

出　　处：《天然气工业》2024年第6期169-180,共12页Natural Gas Industry

基　　金：中国能源建设股份有限公司重大科技专项“300 MW级压缩空气储能电站关键技术和装备研究”(编号:CEEC-KJZX-04)。

摘　　要：盐穴因其密封与稳定特性成为压缩空气储能库(以下简称储能库)首选,储能库可以实现大规模的清洁储能,能实现电力供需的“削峰填谷”,是实现“双碳”目标的重要方向之一。井口装置、注采管和封隔器组成的井筒体系是储能库与地面设备的连接通道,然而受气体注采流量的限制和冲蚀作用的影响,现阶段的小通径井筒严重限制了压缩空气储能电站的装机规模。为优化储能库注采井筒体系,对大通径井口装置、耐腐蚀套管和大尺寸封隔器的设计与加工中存在的主要问题进行了分析,并结合工程实际提出了解决措施和合理化建议。研究结果表明:(1)井口装置设计需考虑到每层套管头座挂芯轴悬挂器台阶的承载强度,需要校核及验证悬挂器最小壁厚处的抗外挤强度、承受井下反压时顶丝的抗剪切强度等参数;(2)套管选材应充分考虑制造工艺及经济成本在盐穴压缩空气储能工况中的适用性,建议在易发生冲蚀处使用耐蚀合金纯管材,其余部位优选具有性价比的耐腐蚀套管;(3)大尺寸封隔器建议整体采用芯轴设计,胶筒选用氢化丁腈橡胶或四丙氟橡胶等材质,卡瓦建议采用笼式桶状。结论认为,提出的注采井筒体系设计优化措施,能够为该类型储能项目的大尺寸井筒注采体系设计与优化提供方法和思路。Salt cavern is taken as the preferential choice for compressed air energy storage(CAES)due to its sealing and stable performance.CAES can realize the large-scale clean energy storage and the"peaking cutting and valley filling"of electric power supply and demand,which makes it one of the important directions to achieve"dual carbon"goal.The wellbore system composed of wellhead device,injection and production pipe and packer connects CAES with surface equipment,but due to the restriction of gas injection and production rates and the influence of erosive action,the current small-diameter wellbore has a serious restriction to the installed capacity of CAES power station.In order to optimize the injection and production wellbore system of CAES,this paper analyzes the main problems in the design and processing of large-diameter wellhead device,corrosion resistant casing and large-size packer,and puts forward countermeasures and suggestions according to actual engineering.And the following research results are obtained.First,when designing wellhead device,it is necessary to take into account the loading strength of the step for setting the mandrel hanger on the casing head of each layer,and check and verify the parameters such as the collapse strength at the minimum wall thickness of the hanger and the shear strength of the jack screw under the downhole back pressure.Second,when casing material is selected,sufficient consideration shall be put on the applicability of process and economic cost under the working conditions of salt cavern CAES,and it is suggested to adopt corrosion resistant alloy casing where erosion tends to happen easily and cost-effective corrosion resistant casing in the other locations.Third,it is suggested to apply the mandrel design overall to the large-size packer,select hydrogenated nitrile butadiene rubber or tetrafluoroethylene-propylene rubber for rubber cylinder,and adopt the cage-type barrel shape for slip.In conclusion,the proposed measures for optimizing the design of injection and producti

关 键 词：盐穴 CAES 井口装置 套管 封隔器 大尺寸 注采 优化设计 

分 类 号：TE822[石油与天然气工程—油气储运工程]