石油套管损坏原因及其预防
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摘要
针对石油套管在服役过程中损坏严重的问题,分析了石油套管损坏的原因,发现油井开采过程中注水会导致油井底层的应力发生转变,当油套管无法适应这种改变时,便会发生损坏。同时原油中的腐蚀介质以及油井注水中的夹杂物均会造成油套管一定程度的损坏。除此之外,射孔作业中,射孔操作的精准度也会对油管的安全服役产生一定影响。在此分析结果之上,提出了降低和预防油套管损坏的措施,现场运用情况良好。
In view of the serious damage of the oil casing during service, the cause of the casing damage was analyzed. It was found that the oilwell water injection in the period of oilwell exploitation would cause the stress of the oilwell bottom to change, and when the oil casing could not adapt to this change, it would be damaged. At the same time, the corrosive medium in the crude oil and the inclusions in the injection water will cause damage to the oil casing. In addition, the accuracy of the perforating operation will also have an impact on the safe service of the tubing in the period of perforating operation. Based on the above analysis results, the measures of reduction and prevention oil casing damage are proposed, and the application in oilfield is good.
In view of the serious damage of the oil casing during service, the cause of the casing damage was analyzed. It was found that the oilwell water injection in the period of oilwell exploitation would cause the stress of the oilwell bottom to change, and when the oil casing could not adapt to this change, it would be damaged. At the same time, the corrosive medium in the crude oil and the inclusions in the injection water will cause damage to the oil casing. In addition, the accuracy of the perforating operation will also have an impact on the safe service of the tubing in the period of perforating operation. Based on the above analysis results, the measures of reduction and prevention oil casing damage are proposed, and the application in oilfield is good.
引文
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[2]宋军官.套管柱设计新方法及其软件编制[D].大庆:大庆石油学院, 2003.
[3]杨红亚.油田套管损坏防治措施研究[J].中国石油和化工标准与质量, 2013(1):57.
[4]孟祥玉,滕新兴.胜利油田套管损坏的现状及建议[J].石油钻采工艺, 1994(2):10-15, 105.
[5]施智玲.江苏油田套管损坏原因分析及预防[J].石油钻探技术, 2003(4):31-32.
[6]夏竹君,薛明霞,王亚芬,等.套管损坏状况检测方法在中原油田的应用[J].石油管材与仪器, 2005, 19(1):74-76.
[7]徐刚,刘鹏,张启龙,等.渤海油田典型井套管损坏原因分析[J].表面技术, 2017,46(7):168-172.
[8]马星,周好斌,何兴利,等.钢管防腐酸洗及水清洗工艺介绍[J].石化技术, 2017(4):32-33.
[9]赵君,孙万磊,邵磊,等. 3PE防腐层管道外腐蚀控制薄弱点分析[J].油气储运, 2016, 35(11):1203-1205, 1211.
[10]李汝江,韩秀林,王友全,等.钢管3PE外防腐工艺探讨[J].焊管, 2008, 31(6):75-77.