工程与管理
天然气勘探与开发
超高压气井井口安全系统及其应用
张国琴3张波4
贺洪波1杨田2廖青松！克
1.成都中寰流体控制设备股份有限公司2.中国石油集团工程设计有限责任公司西南分公司
3.北京兴油工程项目管理有限公司成都分公司4.中国石油西南油气田公司
2017年9月出版
国内外采气树并口安全阅控制目前主要采用该动控制技术和气动控制技术，气动安全阀控制技术停留在低压、常温、
摘要
低产、非房蚀气质条件范围及压力等级34.5MPa、69.0MPa以下阶段，压力等级103.5MPa、138.0MPa及以上的超高压气井采用气动并口安全阀的控制至今商无经验可。为了解决目前国内起高压气并井口安全阅在商压、高温、高产、高离蚀气质等悉劣工况下的使用难题，保证井口安全阀功能的有效性，确保采气树井口装置安全可靠，通过对井口安全系统一体化优化设计，从气动安全阀应用叠式气动执行器成套组装技术、气动安全阅在工艺管道上审联元余安装方式、高低压压力传感器采用103.5MPa等级保护技术、节流阅后加装防低温冻结的加温技术和控制系统采用逻辑关联控制技术等多方面、多角度对超高压气井的并口安全系统的应用技术进行分析，并在我国超高压气并双探1并并口安全控制系统进行了首次应用，取得了圈满成功，解决了起高压气并井口安全系统在国内使用的难题，为超高压气井气动安全阅控制技术推广应用奠定了基础。
关键词高压
气井气动井口安全阀
究余配置
DOI: 10.12055/gaskk.issn.1673-3177.2017.03.015
压力传感器低湿防冻关联控制
并口安全系统
Wellhead safety system of ultrahigh pressure gas wells and its application technologies
HeHongbo',YangTian”,Liao Qingsong',ZhangGuoqin',Zhangbo
(I.ChengduZhonghuan Fluid Control Equipment Company Limited,Chengdu, Sichuan 610207,China; 2.China Petroleum Engineering Co.,Ltd.Southwest Company,Chengdu, Sichuan 610041,China; 3.Chengdu Company,Bei-jingXingyouEngineeringProjectManagement CompanyLimited,Chengdu,Sichuan 610017,China;4.PetroChina SouthwestOil&GasFeildCompany)
Abstract: Hydraulic control technology and pneumatic control technology are the principal control technologies for wellhead safety valve of Christmas tree around the world. The pneumatic control technology is still suitable for low pressure, normal temperature, low yield, non-corrosive medium and pressure rating lower than 34.5 MPa or 69.0 MPa, There is no experience available for the con-trol of pneumatic wellhead safety valve in ultrahigh pressure gas wells with pressure rating of 103.5 MPa, 138.0 MPa and above. In this paper, integrated optimization design was performed on wellhead safety system to solve the problems in application of wellhead safety valve in ultrahigh pressure gas wells where severe conditions exist (e.g. high pressure, high temperature, high yield and highly corrosive gas), so as to ensure the functional effectiveness of wellhead safety valves and the safety and reliability of wellhead devices of Christmas trees. The application technologies for wellhead safety system of ultrahigh pressure gas wells were analyzed from multi-ple aspects, including complete assembly technology for stack type pneumatic actuator, tandem redundancy installation of pneumatic oassaeeossaeea low-temperature anti-freezing behind the throttle valve, and logic association control technology for control system. These application technologies were, for the first time, successfully used for wellhead safety control system of Well Shuangtan 1, an ultrahigh pressure gas well in China. They help to solve the problems in application of wellhead safety system in ultrahigh pressure gas wells in China, and provide the basis for the popularization and application of pneumatic safety valve control technologies for ultrahigh pressure gas wells.
Keywords: Ultrahigh pressure; Gas well; Pneumatic wellhead safety valve; Redundancy configuration; Pressure sensor; Low-tempera-ture anti-freezing; Association control; Wellhead safety system
第一作者：贺洪波，1975年生，工程师；主要从事采气树井口地面安全控制系统的设计研发工作，地址：（610500）四川省成都
市双流县西南航空港经济开发区空港二路2段1488号，电话：（028）85744056、85744092.E-mail:kaisa.he@zh-fow.com· 96·
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