Article(id=1149673296368681412, tenantId=1146029695717560320, journalId=1146123222451335185, issueId=1149670639897854094, articleNumber=1671-1807(2025)10-0236-06, orderNo=null, doi=null, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1713369600000, receivedDateStr=2024-04-18, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1752033073750, onlineDateStr=2025-07-09, pubDate=1748102400000, pubDateStr=2025-05-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1752033073750, onlineIssueDateStr=2025-07-09, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1752033073750, creator=13701087609, updateTime=1752033073750, updator=13701087609, issue=Issue{id=1149670639897854094, tenantId=1146029695717560320, journalId=1146123222451335185, year='2025', volume='25', issue='10', pageStart='1', pageEnd='377', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=0, createTime=1752032440399, creator=13701087609, updateTime=1756780756355, updator=15831073675, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1169586520596947842, tenantId=1146029695717560320, journalId=1146123222451335185, issueId=1149670639897854094, language=EN, specialIssueTitle=, coverIllustrator=, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1169586520596947843, tenantId=1146029695717560320, journalId=1146123222451335185, issueId=1149670639897854094, language=CN, specialIssueTitle=, coverIllustrator=, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=236, endPage=241, ext={EN=ArticleExt(id=1151877663816823124, articleId=1149673296368681412, tenantId=1146029695717560320, journalId=1146123222451335185, language=EN, title=Influence of Prestress of Locating Seal on Injection String in Q Oilfield of Bohai Sea, columnId=1151877663716159826, journalTitle=Science Technology and Industry, columnName=Enterprise Application, runingTitle=null, highlight=null, articleAbstract=
In order to solve the seal failure and string safety problems caused by unreasonable application of prestress on the positioning seal of the injection pipe string in Q Oilfield of Bohai Sea, the wellbore string model of the injection well was established by using Landmark software to simulate and analyze the string expansion during the injection process of well X1 and the mechanical behavior changes of the pipe string after different prestress was applied to the positioning seal. The results show that the scientific application of positioning sealing prestress according to different well inclines can reduce the risk of pipe seal failure. The research results can provide theoretical support for the rational application of positioning sealing prestress to the waterflood string in Q oilfield.
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针对渤海Q油田注水管柱因管柱定位密封预应力施加不合理而导致密封失效及管柱安全问题,以Q油田X1井为例,采用Landmark软件建立注水井井筒管柱模型,模拟分析X1井在注入过程中的管柱伸缩量和对定位密封施加不同预应力后管柱的力学行为变化。研究结果表明,根据不同井斜科学地施加定位密封预应力能够降低管柱密封失效的风险。该研究成果可为渤海Q油田注水管柱合理施加定位密封预应力提供理论支撑。
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戚亚东(1989—),男,四川阆中人,工程师,硕士,研究方向为采油工程方案设计及井筒管柱工艺;
方涛(1988—),男,四川安岳人,硕士,工程师,研究方向为采油工程方案设计;
尚宝兵(1988—),男,山东青岛人,硕士,工程师,研究方向为采油工程方案设计;
赵顺超(1986—),河北唐山人,硕士,工程师,研究方向为采油工程方案设计;
周玉刚(1994—),山东潍坊人,硕士,工程师,研究方向为采油工程方案设计;
吴华晓(1981—),浙江乐清人,硕士,工程师,研究方向为采油工程方案设计。
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戚亚东(1989—),男,四川阆中人,工程师,硕士,研究方向为采油工程方案设计及井筒管柱工艺;
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戚亚东(1989—),男,四川阆中人,工程师,硕士,研究方向为采油工程方案设计及井筒管柱工艺;
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方涛(1988—),男,四川安岳人,硕士,工程师,研究方向为采油工程方案设计;
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方涛(1988—),男,四川安岳人,硕士,工程师,研究方向为采油工程方案设计;
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尚宝兵(1988—),男,山东青岛人,硕士,工程师,研究方向为采油工程方案设计;
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尚宝兵(1988—),男,山东青岛人,硕士,工程师,研究方向为采油工程方案设计;
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赵顺超(1986—),河北唐山人,硕士,工程师,研究方向为采油工程方案设计;
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赵顺超(1986—),河北唐山人,硕士,工程师,研究方向为采油工程方案设计;
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周玉刚(1994—),山东潍坊人,硕士,工程师,研究方向为采油工程方案设计;
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周玉刚(1994—),山东潍坊人,硕士,工程师,研究方向为采油工程方案设计;
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吴华晓(1981—),浙江乐清人,硕士,工程师,研究方向为采油工程方案设计。
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吴华晓(1981—),浙江乐清人,硕士,工程师,研究方向为采油工程方案设计。
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1 in=25.4 mm
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定位密封处井斜为0°、30°、60°、90°时的示意图, figureFileSmall=Z/rxInwTMpCCwsZcPLAZlg==, figureFileBig=I6o2h4BUaoS94edT4zF8Ww==, tableContent=null), ArticleFig(id=1173173743481406204, tenantId=1146029695717560320, journalId=1146123222451335185, articleId=1149673296368681412, language=EN, label=null, caption=null, figureFileSmall=cEZb9xQ0uFvCJFtHpxNJ5Q==, figureFileBig=2l54HJmlJUVVuuv4xURlOA==, tableContent=null), ArticleFig(id=1173173743535932157, tenantId=1146029695717560320, journalId=1146123222451335185, articleId=1149673296368681412, language=CN, label=图8, caption=
0°~30°井斜注水井在注水过程中管柱螺旋屈曲井段, figureFileSmall=cEZb9xQ0uFvCJFtHpxNJ5Q==, figureFileBig=2l54HJmlJUVVuuv4xURlOA==, tableContent=null), ArticleFig(id=1173173743594652414, tenantId=1146029695717560320, journalId=1146123222451335185, articleId=1149673296368681412, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| 套管尺寸/in | 磅级/(lbs·ft-1) | 钢级 | 下深/m |
| 30″ | 309.7 | X-52 | 96 |
| 20″ | 106 | K-55 | 535.46 |
| 13-3/8″ | 68 | N-80 | 2 000.52 |
| 9-5/8″ | 47 | N-80 | 3 844.44 |
| 7″ | 47 | N-80 | 4 732.91 |
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X1井身结构
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| 套管尺寸/in | 磅级/(lbs·ft-1) | 钢级 | 下深/m |
| 30″ | 309.7 | X-52 | 96 |
| 20″ | 106 | K-55 | 535.46 |
| 13-3/8″ | 68 | N-80 | 2 000.52 |
| 9-5/8″ | 47 | N-80 | 3 844.44 |
| 7″ | 47 | N-80 | 4 732.91 |
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| 定位密封预应力 | 管柱屈曲长度 | 屈曲类型 |
| 1 t | 605 | 正弦屈曲 |
| 3 t | 718 | 正弦屈曲 |
| 5 t | 795 | 正弦屈曲 |
| 7 t | 861 | 正弦屈曲 |
| 9 t | 918 | 正弦屈曲+螺旋屈曲 |
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X1井对定位密封施加不同预应力后管柱屈曲变化
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| 定位密封预应力 | 管柱屈曲长度 | 屈曲类型 |
| 1 t | 605 | 正弦屈曲 |
| 3 t | 718 | 正弦屈曲 |
| 5 t | 795 | 正弦屈曲 |
| 7 t | 861 | 正弦屈曲 |
| 9 t | 918 | 正弦屈曲+螺旋屈曲 |
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| 井深MD/m | 轴向力/kN | 屈曲类型 |
| 2 133.600 | 68.394 | 无屈曲 |
| 2 438.400 | 27.025 | 无屈曲 |
| 2 743.200 | -14.409 | 螺旋屈曲 |
| 3 048.000 | -58.124 | 螺旋屈曲 |
| 3 352.800 | -109.828 | 螺旋屈曲 |
| 3 489.960 | -134.653 | 螺旋屈曲 |
| 3 490.020 | -62.239 | 无屈曲 |
| 3 589.960 | -75.811 | 无屈曲 |
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井斜0°时注水井在注水过程中管柱的屈曲状态
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| 井深MD/m | 轴向力/kN | 屈曲类型 |
| 2 133.600 | 68.394 | 无屈曲 |
| 2 438.400 | 27.025 | 无屈曲 |
| 2 743.200 | -14.409 | 螺旋屈曲 |
| 3 048.000 | -58.124 | 螺旋屈曲 |
| 3 352.800 | -109.828 | 螺旋屈曲 |
| 3 489.960 | -134.653 | 螺旋屈曲 |
| 3 490.020 | -62.239 | 无屈曲 |
| 3 589.960 | -75.811 | 无屈曲 |
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定位密封 预应力 | 管柱收缩量/ m | 屈曲长度/ m | 屈曲类型 |
| 0 t | -0.778 | 1 064 | 正弦屈曲 |
| 1 t | -0.677 | 1 068 | 正弦屈曲 |
| 3 t | -0.476 | 1 071 | 正弦屈曲 |
| 5 t | -0.273 | 1 074 | 正弦屈曲 |
| 7 t | -0.055 | 1 078 | 正弦屈曲 |
| 8 t | 0.000 | 1 082 | 正弦屈曲 |
| 9 t | 0.000 | 1 190 | 正弦屈曲+螺旋屈曲 |
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井斜60°时注水井在注水过程中管柱的屈曲状态
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定位密封 预应力 | 管柱收缩量/ m | 屈曲长度/ m | 屈曲类型 |
| 0 t | -0.778 | 1 064 | 正弦屈曲 |
| 1 t | -0.677 | 1 068 | 正弦屈曲 |
| 3 t | -0.476 | 1 071 | 正弦屈曲 |
| 5 t | -0.273 | 1 074 | 正弦屈曲 |
| 7 t | -0.055 | 1 078 | 正弦屈曲 |
| 8 t | 0.000 | 1 082 | 正弦屈曲 |
| 9 t | 0.000 | 1 190 | 正弦屈曲+螺旋屈曲 |
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定位密封 预应力 | 管柱收缩量/ m | 屈曲长度/ m | 屈曲类型 |
| 0 t | -0.702 | 1 947 | 正弦屈曲 |
| 1 t | -0.602 | 1 952 | 正弦屈曲 |
| 3 t | -0.400 | 1 957 | 正弦屈曲 |
| 5 t | -0.196 | 1 966 | 正弦屈曲 |
| 7 t | 0.000 | 1 978 | 正弦屈曲 |
| 8 t | 0.000 | 2 022 | 正弦屈曲+螺旋屈曲 |
| 9 t | 0.000 | 2 067 | 正弦屈曲+螺旋屈曲 |
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井斜90°时注水井在注水过程中管柱的屈曲状态
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定位密封 预应力 | 管柱收缩量/ m | 屈曲长度/ m | 屈曲类型 |
| 0 t | -0.702 | 1 947 | 正弦屈曲 |
| 1 t | -0.602 | 1 952 | 正弦屈曲 |
| 3 t | -0.400 | 1 957 | 正弦屈曲 |
| 5 t | -0.196 | 1 966 | 正弦屈曲 |
| 7 t | 0.000 | 1 978 | 正弦屈曲 |
| 8 t | 0.000 | 2 022 | 正弦屈曲+螺旋屈曲 |
| 9 t | 0.000 | 2 067 | 正弦屈曲+螺旋屈曲 |
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