东方13-2海底管道干燥工艺设计与施工
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摘要
天然气管道在投产前对管道进行干燥作业,可以抑制投产过程中产生水合物、防止管道腐蚀或管道内天然气的流动性等问题。东方13-2海底24″输气管道长195公里,作业船舶需在台风、季风季期间完成海上施工,连续作业天气窗口较短。为保证在作业天气窗口内尽快完成海管干燥作业,采用干空气、干燥剂、凝胶组成的干燥列车,一次性完成海管淡水除盐、管道排水、管道吹扫干燥等作业,提高了作业效率。优化了直板清管器的尺寸、聚氨酯硬度,清管器列车的成功收取,检验了其耐磨度及密封性,能够满足长距离管线干燥通球的要求。
The drying of natural gas pipelines before production can prevent hydrate formation, pipeline corrosion and the fluidity of natural gas in pipelines. DF 13-2 subsea 24″ pipeline is 195 kilometers long, and the vessels need to complete offshore construction during typhoon and monsoon seasons, and the weather window for continuous operation is short. In order to complete the drying operation of the sea pipe as soon as possible in the operating weather window, the dry train composed of dry air, Desiccant and Gel is adopted to complete the fresh water desalination, pipeline drainage, pipeline purging and drying and other operations of the sea pipe at one time, so as to improve the operating efficiency. The size of the pig and the hardness of polyurethane were optimized, and the pig train was successfully collected. The abrasion resistance and tightness of the pig were tested, which could meet the requirements of long-distance pipeline drying.
The drying of natural gas pipelines before production can prevent hydrate formation, pipeline corrosion and the fluidity of natural gas in pipelines. DF 13-2 subsea 24″ pipeline is 195 kilometers long, and the vessels need to complete offshore construction during typhoon and monsoon seasons, and the weather window for continuous operation is short. In order to complete the drying operation of the sea pipe as soon as possible in the operating weather window, the dry train composed of dry air, Desiccant and Gel is adopted to complete the fresh water desalination, pipeline drainage, pipeline purging and drying and other operations of the sea pipe at one time, so as to improve the operating efficiency. The size of the pig and the hardness of polyurethane were optimized, and the pig train was successfully collected. The abrasion resistance and tightness of the pig were tested, which could meet the requirements of long-distance pipeline drying.
引文
[1] 曹学文,王立洋,刘日柱,等.东方1-1气田输气管道除水与干燥工艺设计及施工[J].中国海上油气,2004,16(3):190-202.Cao Xue-wen,Wang Li-yang,Liu Ri-zhu,et al.Design and construction of dewatering and drying process of sub-sea gas pipelines in DF 1-1 gas field [J],China Offshore Oil and Gas,2004,16(3):190-202.
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[12] 张圣兵,别沁,杨生红,等.清管器运行过程动态监测系统的构建[J].化工管理,2014,0(33):121.Zhang Sheng-bing,Bie Qin,Yang Sheng-hong,et al.Construction of dynamic monitoring system for pig running process [J].Chemical Enterprise Management,2014,0(33):121.
[13] 陈星杙,刘伟,袁宗明,等.海底气液混输管道瞬态清管数值模拟[J].油气储运,2018,37(12):1410-1417.Chen Xing-yi,Liu Wei,Yuan Zong-ming,et al.Numerical simulation on transient pigging of submarine gas-liquid mixed pipeline [J].Oil & Gas Storage and Transportation,2018,37(12):1410-1417.
[14] 李俊山,蒋婕.天然气管道清管器跟踪定位模拟与实践[J].油气储运,2013,32(9):966-970.Li Jun-shan,Jiang Jie.Simulation and practice of pig tracking and locating in natural gas pipeline [J].Oil & Gas Storage and Transportation,2013,32(9):966-970.
[2] 葛延超,徐效华,杨鹏,等.荔湾3-1海底管道排水干燥惰化技术的设计与施工[J].油气储运,2014,33(10):1140-1144.Ge Yan-chao,Xu Xiao-hua,Yang Peng,et al.Design and construction of drainage,drying and inerting technology of Liwan 3-1 Subsea Pipeline [J].Oil & Gas Storage and Transportation,2014,33(10):1140-1144.
[3] 倪超,马洪新,唱永磊,等.荔湾3-1气田输气管道排水干燥工艺设计与应用[J].中国海上油气,2015,27(1):107-110.Ni Chao,Ma Hong-xin,Chang Yong-lei,et al.Design and application of dewatering and drying techniques for gas pipeline in LW3-1 gas field [J].China Offshore Oil and Gas,2015,27(1):107-110.
[4] 常景龙,苏宏春.新建天然气管道的除水与干燥技术[J].油气储运,2001,20(12):5-14.Chang Jing-long,Su Hong-chun.Dewatering and drying technique of new natural gas pipeline [J].Oil & Gas Storage and Transportation,2001,20(12):5-14.
[5] 谢永春,张宏彬,程兆欣.LNG管线空气吹扫方案研究[J].海洋工程装备与技术,2018,5(1):67-73.Xie Yong-chun,Zhang Hong-bin,Chen Zhao-xin.Study on Air Purge Scheme of LNG Pipeline [J].Ocean Engineering Equipment and Technology,2008,5(1):67-73.
[6] 高发连.天然气管道干燥施工方法[J].油气储运,2004,23(10):43-45.Gao Lian-fa.On Drying Techniques of Natural Gas Transmission Pipeline [J].Oil & Gas Storage and Transportation,2004,23(10):43-45.
[7] 郭冀江.清管器清管技术在海底管线预调试中的应用[J].清洗世界,2013,29(2):7-12.Guo Ji-jiang.Application for pigging technology of PIG in subsea pipeline pre-commissioning [J].Cleaning World,2013,29(2):7-12.
[8] 曹学文,林宗虎,陈振瑜,等.东方1-1海底输气管道排水与干燥工艺技术[J].天然气工业,2004,24(5):120-122.Cao Xue-wen,Lin Zong-hu,Chen Zhen-yu,et al.Dewatering and drying technique of natural gas pipeline in Dongfang 1-1 gas filed [J].Natural Gas Insustry,2004,24(5):120-122.
[9] 姚海元,李清平,程兵,等.天然气凝析液管道射流清管器清管效果影响因素分析[J].海洋工程装备与技术,2015,2(1:32-35.Yao Hai-yuan,Li Qing-ping,Cheng Bing,et al.Analysis of Influence Factors for Pigging Effectiveness of Bypass Pig in Natural Gas Liquid Pipelines [J].Ocean Engineering Equipment and Technology,2015,2(1):32-35.
[10] 喻西崇,王春升,李博,等.我国南海深水油气田水下回接管道清管策略研究[J].海洋工程装备与技术,2017,4(4):199-204.Yu Xi-chong,Wang Chun-sheng,Li Bo,et al.Pigging Solutions Study of Subsea Tieback Flowline for Deepwater Oil and Gas Fields in the South China Sea [J].Ocean Engineering Equipment and Technology,2007,4(4):199-204.
[11] 王雪莉,党瑞,周琰,等.基于压力波的清管器在线定位算法[J].油气储运,2017,36(3):290-296.Wang Xue-li,Dang Rui,Zhou Yan,et al.Online pig positioning algorithm based on pressure wave [J].Oil & Gas Storage and Transportation,2017,36(3):290-296.
[12] 张圣兵,别沁,杨生红,等.清管器运行过程动态监测系统的构建[J].化工管理,2014,0(33):121.Zhang Sheng-bing,Bie Qin,Yang Sheng-hong,et al.Construction of dynamic monitoring system for pig running process [J].Chemical Enterprise Management,2014,0(33):121.
[13] 陈星杙,刘伟,袁宗明,等.海底气液混输管道瞬态清管数值模拟[J].油气储运,2018,37(12):1410-1417.Chen Xing-yi,Liu Wei,Yuan Zong-ming,et al.Numerical simulation on transient pigging of submarine gas-liquid mixed pipeline [J].Oil & Gas Storage and Transportation,2018,37(12):1410-1417.
[14] 李俊山,蒋婕.天然气管道清管器跟踪定位模拟与实践[J].油气储运,2013,32(9):966-970.Li Jun-shan,Jiang Jie.Simulation and practice of pig tracking and locating in natural gas pipeline [J].Oil & Gas Storage and Transportation,2013,32(9):966-970.