Article(id=1322942310589276220, tenantId=1146029695717560320, journalId=1322258508890079423, issueId=1322941718441623734, articleNumber=null, orderNo=null, doi=10.13809/j.cnki.cn32-1825/te.2024530, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1743609600000, receivedDateStr=2025-04-03, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1793343625924, onlineDateStr=2026-10-30, pubDate=1779724800000, pubDateStr=2026-05-26, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1793343625924, onlineIssueDateStr=2026-10-30, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1793343625924, creator=13701087609, updateTime=1793343625924, updator=13701087609, issue=Issue{id=1322941718441623734, tenantId=1146029695717560320, journalId=1322258508890079423, year='2026', volume='16', issue='3', pageStart='489', pageEnd='736', issueExtLink='null', onlineDate='null', pubDate='1779724800000', pubDateStr='2026-05-26', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1793343484745, creator='13701087609', updateTime=1793344165564, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1322944574066402279, tenantId=1146029695717560320, journalId=1322258508890079423, issueId=1322941718441623734, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1322944574070596584, tenantId=1146029695717560320, journalId=1322258508890079423, issueId=1322941718441623734, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=730, endPage=736, ext={EN=ArticleExt(id=1322942310836740157, articleId=1322942310589276220, tenantId=1146029695717560320, journalId=1322258508890079423, language=EN, title=Research on residual strength of subsea pipelines with point corrosion under internal pressure, columnId=1322941621217657699, journalTitle=Petroleum Reservoir Evaluation and Development, columnName=Engineering Techniques, runingTitle=null, highlight=
During operation, subsea pipelines are affected by the internal medium, resulting in corrosion defects of varying degrees on the inner surface, which reduce the pressure-bearing capacity and may lead to pipeline rupture or even leakage. Analysis of subsea pipeline corrosion failure cases has shown that point corrosion is more common than uniform corrosion. However, current corrosion assessment standards and specifications mainly target uniformly corroded subsea pipelines of medium to low strength, and a comprehensive evaluation system for point corrosion has not yet been established. A corrosion pipeline model was established using nonlinear finite element analysis, and the results were compared with those from blasting experiments. The comparison indicated that this method produced more stable results with less variation in error than those based on standard specifications. A subsea pipeline made of X60 steel in the East China Sea was selected as the research object, and single and double point corrosion pipeline models were established using Abaqus software. The failure modes and processes under internal pressure were analyzed, along with the effects of parameters such as corrosion depth, corrosion diameter, and double point corrosion axial spacing on the residual strength of the pipeline. The calculation results showed that pipelines with point corrosion failed as a whole, with the inner layer nodes at the corrosion site showing the fastest stress variation and yielding first. The equivalent stress at these inner layer nodes was significantly higher than that at the middle and outer layer nodes. Corrosion depth and diameter jointly affected the residual strength of point corrosion pipelines. As these two factors increased, the failure pressure of double point corrosion pipelines gradually decreased, with increasingly pronounced changes. In addition, the failure pressure of double point corrosion pipelines was positively correlated with axial spacing, with a significant impact on failure pressure when the spacing was small. As the spacing increased, the failure pressure of the pipeline gradually stabilized. The research results can provide guidance for accurate evaluation of the residual strength of corroded subsea pipelines in the East China Sea, and lay a theoretical foundation for corrosion protection and safety assessment of pipelines in this region.
, articleAbstract=null, authors=QI WANG, authorsList=QI WANG, authorCompany=null, correspAuthors=null, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1322942313458180180, articleId=1322942310589276220, tenantId=1146029695717560320, journalId=1322258508890079423, language=CN, title=内压作用下含点腐蚀海底管道剩余强度研究, columnId=1322941621964243813, journalTitle=油气藏评价与开发, columnName=工程工艺, runingTitle=null, highlight=
海底管道运行期间受管内介质影响,内表面会形成不同程度的腐蚀缺陷,导致管道承压能力降低,易引发管道破裂甚至泄漏。通过海管腐蚀失效案例分析发现,点腐蚀较均匀腐蚀更为常见,但当前腐蚀评估标准及规范主要针对中低强度均匀腐蚀海管,尚未形成适用于点腐蚀的全面评价体系。采用非线性有限元分析方法建立腐蚀管道模型,与爆破实验结果进行对比验证,表明该方法计算结果较各规范更稳定,误差波动更小。以东海某X60钢制海底管道为研究对象,应用Abaqus软件分别建立单、双点腐蚀海底管道模型,分析内压作用下含点腐蚀海底管道失效的形式与过程,以及腐蚀深度、腐蚀直径、双点腐蚀间距等参数对管道剩余强度的影响。计算结果显示:含点腐蚀管道的失效形式为整体失效,腐蚀处内层节点应力变化速率最快且率先达到屈服,其等效应力显著大于中、外层节点;腐蚀深度和直径共同影响点腐蚀管道的剩余强度,随二者增大,双点腐蚀管道的失效压力逐渐减小且变化愈发明显;此外,双点腐蚀管道的失效压力与轴向间距呈正相关,间距较小时影响显著,随间距增大,管道失效压力逐渐趋于稳定。研究成果可为东海海底腐蚀管道剩余强度的精准评价提供指导,为该区域海底管道的腐蚀防护及安全评估奠定理论基础。
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王琪(1998-),女,硕士,助理工程师,从事平台及海管结构研究。地址:上海市浦东新区商城路1225号,邮政编码:200120。E-mail:wangqi.shhy@sinopec.com
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王琪(1998-),女,硕士,助理工程师,从事平台及海管结构研究。地址:上海市浦东新区商城路1225号,邮政编码:200120。E-mail:wangqi.shhy@sinopec.com
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Stress-strain curves for pipelines of different steel grades, figureFileSmall=VQMcEdeHPDfZEbtpp4wvIA==, figureFileBig=bSARxunzo4gfgaHh2httIg==, tableContent=null), ArticleFig(id=1322942314905215080, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942310589276220, language=CN, label=图1, caption=
各钢级管应力-应变曲线, figureFileSmall=VQMcEdeHPDfZEbtpp4wvIA==, figureFileBig=bSARxunzo4gfgaHh2httIg==, tableContent=null), ArticleFig(id=1322942315102347369, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942310589276220, language=EN, label=Fig.2, caption=
Schematic diagram of single point corrosion pipeline model, figureFileSmall=J/peouVMxP05ORwIkA2Fdg==, figureFileBig=UKqnxfMJBgOVkWYq2xBG8w==, tableContent=null), ArticleFig(id=1322942315169456234, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942310589276220, language=CN, label=图2, caption=
单点腐蚀管道模型示意图, figureFileSmall=J/peouVMxP05ORwIkA2Fdg==, figureFileBig=UKqnxfMJBgOVkWYq2xBG8w==, tableContent=null), ArticleFig(id=1322942315240759403, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942310589276220, language=EN, label=Fig.3, caption=
Comparison of failure pressure calculation errors, figureFileSmall=s2N5fSHk5cpCeZl4sqPOXg==, figureFileBig=SfreoAV+q8BqsXey17F2Zw==, tableContent=null), ArticleFig(id=1322942315307868268, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942310589276220, language=CN, label=图3, caption=
失效压力计算误差对比, figureFileSmall=s2N5fSHk5cpCeZl4sqPOXg==, figureFileBig=SfreoAV+q8BqsXey17F2Zw==, tableContent=null), ArticleFig(id=1322942315387560045, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942310589276220, language=EN, label=Fig.4, caption=
Variation of equivalent stress with internal pressure at corrosion site, figureFileSmall=8Ev+cg0dyqC/JMqyUJdGTA==, figureFileBig=S1+WJPjoYB2XPHPqRT+PcQ==, tableContent=null), ArticleFig(id=1322942315471446126, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942310589276220, language=CN, label=图4, caption=
腐蚀缺陷处等效应力随内压荷载变化, figureFileSmall=8Ev+cg0dyqC/JMqyUJdGTA==, figureFileBig=S1+WJPjoYB2XPHPqRT+PcQ==, tableContent=null), ArticleFig(id=1322942315542749295, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942310589276220, language=EN, label=Fig.5, caption=
Variation of equivalent stress with axial position, figureFileSmall=G5UE0wNiafUj4XwcCbB1Fw==, figureFileBig=jSUL+9RipF5k22FvyIry5g==, tableContent=null), ArticleFig(id=1322942315609858160, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942310589276220, language=CN, label=图5, caption=
等效应力随轴向位置变化, figureFileSmall=G5UE0wNiafUj4XwcCbB1Fw==, figureFileBig=jSUL+9RipF5k22FvyIry5g==, tableContent=null), ArticleFig(id=1322942315668578417, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942310589276220, language=EN, label=Fig.6, caption=
Stress cloud diagram of pipelines with different point corrosion depths, figureFileSmall=LvZsY+LGvmVFam+QaXuEpA==, figureFileBig=tW5PlNU9bH1ETAtdWagD3w==, tableContent=null), ArticleFig(id=1322942315744075890, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942310589276220, language=CN, label=图6, caption=
不同点腐蚀深度下管道应力云图, figureFileSmall=LvZsY+LGvmVFam+QaXuEpA==, figureFileBig=tW5PlNU9bH1ETAtdWagD3w==, tableContent=null), ArticleFig(id=1322942315840544883, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942310589276220, language=EN, label=Fig.7, caption=
Equivalent stress variations of pipelines with different point corrosion depths under different point corrosion diameters, figureFileSmall=IiwPC8OVAiDoQoFfXrxUHQ==, figureFileBig=mx8vpEssVaep2BK7mwYJiw==, tableContent=null), ArticleFig(id=1322942315924430964, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942310589276220, language=CN, label=图7, caption=
不同点腐蚀直径下不同深度点腐蚀管道等效应力变化注:D1为腐蚀直径,单位mm。
, figureFileSmall=IiwPC8OVAiDoQoFfXrxUHQ==, figureFileBig=mx8vpEssVaep2BK7mwYJiw==, tableContent=null), ArticleFig(id=1322942316016705653, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942310589276220, language=EN, label=Fig.8, caption=
Stress cloud diagram of pipelines under different point corrosion diameters, figureFileSmall=VoinjUqKjXuWb+tVwYfKZw==, figureFileBig=ygvv2PrplAC6Aldy8B5pxw==, tableContent=null), ArticleFig(id=1322942316100591734, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942310589276220, language=CN, label=图8, caption=
不同点腐蚀直径下管道应力云图, figureFileSmall=VoinjUqKjXuWb+tVwYfKZw==, figureFileBig=ygvv2PrplAC6Aldy8B5pxw==, tableContent=null), ArticleFig(id=1322942316197060727, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942310589276220, language=EN, label=Fig.9, caption=
Equivalent stress variations of pipelines with different point corrosion diameters under different point corrosion depths, figureFileSmall=t+konChvU2Uy2F13+fLFcQ==, figureFileBig=I1smEbFsXft1oOn70HZwBA==, tableContent=null), ArticleFig(id=1322942316280946808, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942310589276220, language=CN, label=图9, caption=
不同点腐蚀深度下不同点腐蚀直径管道等效应力变化, figureFileSmall=t+konChvU2Uy2F13+fLFcQ==, figureFileBig=I1smEbFsXft1oOn70HZwBA==, tableContent=null), ArticleFig(id=1322942316348055673, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942310589276220, language=EN, label=Fig.10, caption=
Stress cloud diagram of pipeline corrosion defects with different point corrosion axial spacings, figureFileSmall=6O8OEsH97PEqFr5fKoCl/Q==, figureFileBig=Nwa7jiSPVXkR9fLDJtNF0Q==, tableContent=null), ArticleFig(id=1322942316406775930, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942310589276220, language=CN, label=图10, caption=
不同点腐蚀轴向间距下管道腐蚀缺陷处应力云图, figureFileSmall=6O8OEsH97PEqFr5fKoCl/Q==, figureFileBig=Nwa7jiSPVXkR9fLDJtNF0Q==, tableContent=null), ArticleFig(id=1322942316473884795, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942310589276220, language=EN, label=Fig.11, caption=
Equivalent stress variations of pipelines with different axial spacings under different point corrosion diameters, figureFileSmall=w4sxKhaop2G44cK/RfcsfA==, figureFileBig=MT37pI8oW49eHcAtJRHmCQ==, tableContent=null), ArticleFig(id=1322942316536799356, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942310589276220, language=CN, label=图11, caption=
不同点腐蚀直径下不同点腐蚀轴向距离管道等效应力变化, figureFileSmall=w4sxKhaop2G44cK/RfcsfA==, figureFileBig=MT37pI8oW49eHcAtJRHmCQ==, tableContent=null), ArticleFig(id=1322942316612296829, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942310589276220, language=EN, label=Table 1, caption=
Comparison of pipeline failure pressure results, figureFileSmall=null, figureFileBig=null, tableContent=
| 编号 | 钢级 | 屈服 强度/MPa | 抗拉 强度/MPa | 外径/ mm | 壁厚/mm | 缺陷/mm | 实验失效 压力/MPa | 估算值/MPa | 非线性有限元计算值/MPa |
|---|
| 深度 | 长度 | 修正的B31G规范 | DNV-RP-F101规范 | PCORRC 方法 |
|---|
| 1 | X46 | 356.4 | 469.3 | 323.09 | 8.59 | 2.97 | 20.30 | 23.11 | 22.22 | 25.34 | 24.09 | 21.74 |
| 2 | X46 | 356.4 | 469.3 | 323.09 | 8.64 | 2.69 | 60.96 | 25.23 | 20.80 | 24.06 | 23.02 | 22.82 |
| 3 | X46 | 356.4 | 469.3 | 323.09 | 8.53 | 2.18 | 50.80 | 21.56 | 21.25 | 24.45 | 23.38 | 20.11 |
| 4 | X46 | 356.4 | 469.3 | 323.34 | 8.64 | 2.16 | 63.50 | 24.37 | 21.17 | 24.40 | 23.42 | 22.06 |
| 5 | X46 | 356.4 | 469.3 | 762.00 | 17.50 | 8.80 | 100.00 | 24.30 | 17.28 | 20.05 | 18.97 | 24.37 |
| 6 | X80 | 589.0 | 731.0 | 459.00 | 8.00 | 3.75 | 40.00 | 24.20 | 21.33 | 24.60 | 23.31 | 23.47 |
| 7 | X80 | 601.0 | 684.0 | 457.00 | 8.10 | 5.39 | 39.60 | 22.70 | 20.75 | 22.06 | 20.68 | 21.38 |
), ArticleFig(id=1322942316683599998, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942310589276220, language=CN, label=表1, caption=
管道失效压力结果对比
, figureFileSmall=null, figureFileBig=null, tableContent=
| 编号 | 钢级 | 屈服 强度/MPa | 抗拉 强度/MPa | 外径/ mm | 壁厚/mm | 缺陷/mm | 实验失效 压力/MPa | 估算值/MPa | 非线性有限元计算值/MPa |
|---|
| 深度 | 长度 | 修正的B31G规范 | DNV-RP-F101规范 | PCORRC 方法 |
|---|
| 1 | X46 | 356.4 | 469.3 | 323.09 | 8.59 | 2.97 | 20.30 | 23.11 | 22.22 | 25.34 | 24.09 | 21.74 |
| 2 | X46 | 356.4 | 469.3 | 323.09 | 8.64 | 2.69 | 60.96 | 25.23 | 20.80 | 24.06 | 23.02 | 22.82 |
| 3 | X46 | 356.4 | 469.3 | 323.09 | 8.53 | 2.18 | 50.80 | 21.56 | 21.25 | 24.45 | 23.38 | 20.11 |
| 4 | X46 | 356.4 | 469.3 | 323.34 | 8.64 | 2.16 | 63.50 | 24.37 | 21.17 | 24.40 | 23.42 | 22.06 |
| 5 | X46 | 356.4 | 469.3 | 762.00 | 17.50 | 8.80 | 100.00 | 24.30 | 17.28 | 20.05 | 18.97 | 24.37 |
| 6 | X80 | 589.0 | 731.0 | 459.00 | 8.00 | 3.75 | 40.00 | 24.20 | 21.33 | 24.60 | 23.31 | 23.47 |
| 7 | X80 | 601.0 | 684.0 | 457.00 | 8.10 | 5.39 | 39.60 | 22.70 | 20.75 | 22.06 | 20.68 | 21.38 |
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