| 我国油田套管损坏的原因探讨 |
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| 引用本文： | 张先普,李学忠.我国油田套管损坏的原因探讨[J].石油钻采工艺,1996,18(5):7-12. |
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| 作者姓名： | 张先普 李学忠 |
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| 作者单位： | 1.西南石油学院 |
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| 摘 要： | 近年来,我国油田套管损坏速度呈直线上升趋势,有的井不足1年时间,有的井刚完井1个月套管就坏了,给原油生产带来重大损失。套管损坏,一是套管柱设计不合理,特别是在盐岩、泥(页)岩地层,设计载荷偏小;二是不合理的注水,加速了套管的损坏;三是套管柱强度设计本来就不富余,射孔给套管带来一定的损害,加速了套管损坏;四是套管的外腐蚀使套管穿孔造成内腐蚀,腐蚀使套管更易损坏;五是油层出砂、固井质量、套管缺陷等使套管损坏。造成套管损坏的因素很多,具体到每口井必然有一些主要因素,找到主要因素才好采取防范措施。
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| 关 键 词： | 套管损坏 盐膏层 泥岩 蠕变 滑动 套管柱设计 套管射孔 套管腐蚀 |
| 收稿时间： | 2019-05-22 |
DISCUSSION ON CAUSES OF CASING FAILURE IN OILFIELDS |
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| Zhang Xianpu,Chen Jiming,Zhang Xiaoyu, Dong Shier, Li Xuezhong, Liu Jisong,Sun Jianhua,Meng Lingxiang.DISCUSSION ON CAUSES OF CASING FAILURE IN OILFIELDS[J].Oil Drilling & Production Technology,1996,18(5):7-12. |
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| Authors: | Zhang Xianpu Chen Jiming Zhang Xiaoyu Dong Shier Li Xuezhong Liu Jisong Sun Jianhua Meng Lingxiang |
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| Affiliation: | Zhang Xianpu;Chen Jiming;Zhang Xiaoyu; Dong Shier; Li Xuezhong; Liu Jisong;Sun Jianhua;Meng Lingxiang |
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| Abstract: | Casing failure is increasing rapidly in recent years. Some wells,for instance, were found the casing damaged only a year or even a month after completion.It has caused great losses to oilfield's production. Those causes of casing failure are: 1. unreasonable design of casing string(especially in salt bed and mudstone (shale) formation); 2. unreasonable water injection; 3. casing Perforation; 4.corrosion; 5. sand problems, cementing quality and casing defect. |
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| Keywords: | casing failure evaporite bed mudstone creep slippage casing string design casing perforating casing corrosion |
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