普光气田高含硫腐蚀缺陷输气管道安全评价
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摘要
普光气田是中国特大型高含硫酸性气田,随着气田不断开采,集输工艺管道腐蚀问题日益突出。对普光气田高含硫输气管道所用L360管线钢开展应力-应变参数测试试验,采用Solid186单元对含缺陷腐蚀管道进行建模,基于非线性有限元隐式积分算法与塑性失效准则,分析了腐蚀缺陷参数对高含硫输气管道极限承载能力的影响规律,并通过静水压爆破试验,验证了模型的准确性。结果表明:腐蚀缺陷对高含硫输气管道强度的影响主要表现为局部应力集中;缺陷深度系数对高含硫输气管道极限承载能力影响最大,缺陷长度系数影响次之,缺陷宽度系数影响最小。研究成果为普光气田高含硫输气管道剩余强度评价提供了理论依据。
Puguang Gas Field is the giant high-sulfur acid gas field in China. And as it is produced continuously, the corrosion of gathering and transportation pipelines is increasingly serious. L360 pipeline steel is used in the high-sulfur gas pipelines of Puguang Gas Field and its stress-strain parameters were tested. The pipeline with corrosion defects was modeled using the Solid186 unit. Then, the influence rules of corrosion defect parameters on the ultimate bearing capacity of high-sulfur gas pipeline was analyzed based on the implicit integration algorithm of nonlinear finite element and the plastic failure criterion. Finally, the correctness of this model was verified by virtue of the hydrostatic pressure blasting test. It is shown that the influence of the defects on the strength of high-sulfur gas pipelines is mainly presented as the local stress concentration. The ultimate bearing capacity of the high-sulfur gas pipeline is the most affected by the defect depth cofficient, secondly by the defect length cofficient, and the least by the defect width cofficient. The research results provide the theoretical basis for evaluating the residual strength of high-sulfur gas pipelines in Puguang Gas Field.
Puguang Gas Field is the giant high-sulfur acid gas field in China. And as it is produced continuously, the corrosion of gathering and transportation pipelines is increasingly serious. L360 pipeline steel is used in the high-sulfur gas pipelines of Puguang Gas Field and its stress-strain parameters were tested. The pipeline with corrosion defects was modeled using the Solid186 unit. Then, the influence rules of corrosion defect parameters on the ultimate bearing capacity of high-sulfur gas pipeline was analyzed based on the implicit integration algorithm of nonlinear finite element and the plastic failure criterion. Finally, the correctness of this model was verified by virtue of the hydrostatic pressure blasting test. It is shown that the influence of the defects on the strength of high-sulfur gas pipelines is mainly presented as the local stress concentration. The ultimate bearing capacity of the high-sulfur gas pipeline is the most affected by the defect depth cofficient, secondly by the defect length cofficient, and the least by the defect width cofficient. The research results provide the theoretical basis for evaluating the residual strength of high-sulfur gas pipelines in Puguang Gas Field.
引文
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[4]林杨.原油输出终端输油管道泄漏原因分析[J].机械工程材料,2017,41(6):99-102.LIN Y.Leakage cause analysis of pipeline at output terminal of crude oil[J].Materials for Mechanical Engineering,2017,41(6):99-102.
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[10]姜晓红,洪险峰,刘争,等.管道内检测数据对比对完整性评价的影响[J].油气储运,2016,35(1):28-31.JIANG X H,HONG X F,LIU Z,et al.Impacts of inline inspection data comparison on integrity assessment of pipelines[J].Oil&Gas Storage and Transportation,2016,35(1):28-31.
[11]熊丹,赵杰,顾艳红,等.长输油气高强管道钢的腐蚀研究进展[J].腐蚀科学与防护技术,2017,29(4):443-450.XIONG D,ZHAO J,GU Y H,et al.Research progress in corrosion of long distance oil and gas high strength pipeline steel[J].Corrosion Science and Protection Technology,2017,29(4):443-450.
[12]贺红彦.海底油气输送管道腐蚀缺陷评价研究[D].西安:西安建筑科技大学,2015:26-28.HE H Y.Maritime transport of oil and gas pipeline corrosion failure risk analysis[D].Xi'an:Xi'an University of Architecture&Technology,2015:26-28.
[13]吕亚林,刘宏伟,熊福平,等.铁氧化菌对X80管道钢腐蚀行为的影响[J].腐蚀科学与防护技术,2017,29(4):343-348.LYU Y L,LIU H W,XIONG F P,et al.Corrosion behavior of X80 pipeline steel in oil-field produced water containing iron oxidizing bacteria[J].Corrosion Science and Protection Technology,2017,29(4):343-348.
[14]吴彦君.某高含硫气田316L奥氏体合金腐蚀规律研究[J].全面腐蚀控制,2017,31(7):76-81.WU Y J.Research on corrosion law of 316L austenitic alloy in a high hydrogen sulfide gas field[J].Total Corrosion Control,2017,31(7):76-81.
[15]商剑峰,李坛,刘元直,等.高含硫天然气净化厂管线腐蚀监测方法的优选与应用--以普光气田为例[J].天然气工业,2014,34(1):134-138.SHANG J F,LI T,LIU Y Z,et al.Selection and application of corrosion monitoring methods in high-sulfur natural gas purification plants in the Puguang Gas Field[J].Natural Gas Industry,2014,34(1):134-138.
[16]韩睿超,李健,张玉福,等.湿输高含硫天然气管线内腐蚀原因及机理浅析[J].广州化工,2017(5):95-96,99.HAN R C,LI J,ZHANG Y F,et al.Analysis of causes and mechanism of internal corrosion of high sulfur natural gas pipeline[J].Guangzhou Chemical Industry,2017(5):95-96,99.
[17]王晓霖,帅健,刘德绪.基于智能清管检测的酸气集输管道可靠性评价[J].油气储运,2013,32(6):594-597.WANG X L,SHUAI J,LIU D X.Reliability evaluation of high-sulfur gas gathering pipeline based on intelligent pigging detection[J].Oil&Gas Storage and Transportation,2013,32(6):594-597.
[18]李增亮,陈猛.外腐蚀管道剩余强度及剩余寿命的有限元分析[J].润滑与密封,2010(10):86-89.LI Z L,CHEN M.Finite element analysis of residual strength and life for outside corroded pipelines[J].Lubrication and Sealing,2010(10):86-89.
[19]赵新伟,罗金恒,路民旭.含腐蚀缺陷管道剩余强度的有限元法分析[J].油气储运,2001,20(3):18-21.ZHAO X W,LUO J H,LU M X.FEM analysis on the effect of corroded flaw interaction on remaining storage of line pipe[J].Oil&Gas Storage and Transportation,2001,20(3):18-21.
[20]崔铭伟,曹学文.腐蚀缺陷对中高强度油气管道失效压力的影响[J].石油学报,2012,33(6):1086-1092.CUI M W,CAO X W.Impact of corrosion defects on failure pressure of medium-high strength oil-gas pipelines[J].Acta Petrolei Sinica,2012,33(6):1086-1092.
[21]帅健,张春娥,陈福来.非线性有限元法用于腐蚀管道失效压力预测[J].石油学报,2008,29(6):933-937.SHUAI J,ZHANG C E,CHEN F L.Prediction of failure pressure in corroded pipelines based on non-linear finite element analysis[J].Acta Petrolei Sinica,2008,29(6):933-937.
[22]董玉华,高惠临,周敬恩,等.含缺陷油气管道结构的可靠性计算[J].石油学报,2003,24(1):96-99.DONG Y H,GAO H L,ZHOU J E,et al.Reliability estimation of oil and gas pipelines with some defects[J].Acta Petrolei Sinica,2003,24(1):96-99.
[23]FREIRE J L F,VIEIRA R D,CASTRO J T P,et al.Burst tests of pipeline with extensive longitudinal metal loss[J].Experimental Techniques,2006,30(6):60-65.
[2]胡永碧,谷坛.高含硫气田腐蚀特征及腐蚀控制技术[J].天然气工业,2012,32(12):92-96.HU Y B,GU T.Corrosion features and corrosin control technologies in high-sulfur gas fields[J].Natural Gas Industry,2012,32(12):92-96.
[3]关中原,高辉,贾秋菊.油气管道安全管理及相关技术现状[J].油气储运,2015,34(5):457-463.GUAN Z Y,GAO H,JIA Q J.Oil/gas pipeline safety management and its technology status[J].Oil&Gas Storage and Transportation,2015,34(5):457-463.
[4]林杨.原油输出终端输油管道泄漏原因分析[J].机械工程材料,2017,41(6):99-102.LIN Y.Leakage cause analysis of pipeline at output terminal of crude oil[J].Materials for Mechanical Engineering,2017,41(6):99-102.
[5]American Society of Mechanical Engineers.Manual for determining the remaining strength of corroded pipelines:ASMEB31G-1991[S].New York:ASME,1991:56-59.
[6]KIM W S,KIM Y P.Full scale burst test and finite element analysis on corroded gas pipeline[C].Calgary:The 4rd International Pipeline Conference,2002:27037.
[7]段庆全,于国鹏,张宏.基于有限元的内腐蚀管道极限压力计算[J].油气储运,2009,28(7):21-23.DUAN Q Q,YU G P,ZHANG H.Finite element method to calculate extreme pressure of internal corroded pipeline[J].Oil&Gas Storage and Transportation,2009,28(7):21-23.
[8]杨辉,汤怡,陈健,等.油气管道体积型腐蚀缺陷有限元分析[J].油气储运,2015,34(1):37-41.YANG H,TANG Y,CHEN J,et al.Finite element analysis of volumetric corrosion defects of oil/gas pipeline[J].Oil&Gas Storage and Transportation,2015,34(1):37-41.
[9]曹学文,赵联祁,崔铭伟,等.相互影响双腐蚀缺陷管道的剩余强度[J].油气储运,2015,34(4):354-361.CAO X W,ZHAO L Q,CUI M W,et al.Residual strength of pipeline with double corrosion defects interaction[J].Oil&Gas Storage and Transportation,2015,34(4):354-361.
[10]姜晓红,洪险峰,刘争,等.管道内检测数据对比对完整性评价的影响[J].油气储运,2016,35(1):28-31.JIANG X H,HONG X F,LIU Z,et al.Impacts of inline inspection data comparison on integrity assessment of pipelines[J].Oil&Gas Storage and Transportation,2016,35(1):28-31.
[11]熊丹,赵杰,顾艳红,等.长输油气高强管道钢的腐蚀研究进展[J].腐蚀科学与防护技术,2017,29(4):443-450.XIONG D,ZHAO J,GU Y H,et al.Research progress in corrosion of long distance oil and gas high strength pipeline steel[J].Corrosion Science and Protection Technology,2017,29(4):443-450.
[12]贺红彦.海底油气输送管道腐蚀缺陷评价研究[D].西安:西安建筑科技大学,2015:26-28.HE H Y.Maritime transport of oil and gas pipeline corrosion failure risk analysis[D].Xi'an:Xi'an University of Architecture&Technology,2015:26-28.
[13]吕亚林,刘宏伟,熊福平,等.铁氧化菌对X80管道钢腐蚀行为的影响[J].腐蚀科学与防护技术,2017,29(4):343-348.LYU Y L,LIU H W,XIONG F P,et al.Corrosion behavior of X80 pipeline steel in oil-field produced water containing iron oxidizing bacteria[J].Corrosion Science and Protection Technology,2017,29(4):343-348.
[14]吴彦君.某高含硫气田316L奥氏体合金腐蚀规律研究[J].全面腐蚀控制,2017,31(7):76-81.WU Y J.Research on corrosion law of 316L austenitic alloy in a high hydrogen sulfide gas field[J].Total Corrosion Control,2017,31(7):76-81.
[15]商剑峰,李坛,刘元直,等.高含硫天然气净化厂管线腐蚀监测方法的优选与应用--以普光气田为例[J].天然气工业,2014,34(1):134-138.SHANG J F,LI T,LIU Y Z,et al.Selection and application of corrosion monitoring methods in high-sulfur natural gas purification plants in the Puguang Gas Field[J].Natural Gas Industry,2014,34(1):134-138.
[16]韩睿超,李健,张玉福,等.湿输高含硫天然气管线内腐蚀原因及机理浅析[J].广州化工,2017(5):95-96,99.HAN R C,LI J,ZHANG Y F,et al.Analysis of causes and mechanism of internal corrosion of high sulfur natural gas pipeline[J].Guangzhou Chemical Industry,2017(5):95-96,99.
[17]王晓霖,帅健,刘德绪.基于智能清管检测的酸气集输管道可靠性评价[J].油气储运,2013,32(6):594-597.WANG X L,SHUAI J,LIU D X.Reliability evaluation of high-sulfur gas gathering pipeline based on intelligent pigging detection[J].Oil&Gas Storage and Transportation,2013,32(6):594-597.
[18]李增亮,陈猛.外腐蚀管道剩余强度及剩余寿命的有限元分析[J].润滑与密封,2010(10):86-89.LI Z L,CHEN M.Finite element analysis of residual strength and life for outside corroded pipelines[J].Lubrication and Sealing,2010(10):86-89.
[19]赵新伟,罗金恒,路民旭.含腐蚀缺陷管道剩余强度的有限元法分析[J].油气储运,2001,20(3):18-21.ZHAO X W,LUO J H,LU M X.FEM analysis on the effect of corroded flaw interaction on remaining storage of line pipe[J].Oil&Gas Storage and Transportation,2001,20(3):18-21.
[20]崔铭伟,曹学文.腐蚀缺陷对中高强度油气管道失效压力的影响[J].石油学报,2012,33(6):1086-1092.CUI M W,CAO X W.Impact of corrosion defects on failure pressure of medium-high strength oil-gas pipelines[J].Acta Petrolei Sinica,2012,33(6):1086-1092.
[21]帅健,张春娥,陈福来.非线性有限元法用于腐蚀管道失效压力预测[J].石油学报,2008,29(6):933-937.SHUAI J,ZHANG C E,CHEN F L.Prediction of failure pressure in corroded pipelines based on non-linear finite element analysis[J].Acta Petrolei Sinica,2008,29(6):933-937.
[22]董玉华,高惠临,周敬恩,等.含缺陷油气管道结构的可靠性计算[J].石油学报,2003,24(1):96-99.DONG Y H,GAO H L,ZHOU J E,et al.Reliability estimation of oil and gas pipelines with some defects[J].Acta Petrolei Sinica,2003,24(1):96-99.
[23]FREIRE J L F,VIEIRA R D,CASTRO J T P,et al.Burst tests of pipeline with extensive longitudinal metal loss[J].Experimental Techniques,2006,30(6):60-65.