大尺寸套管落鱼事故的处理方法探讨

To inquire casing fish of big size handling method

石强 陈安明 褚道余

Shi Qiang Chen Anming Chu Daoyu

中国石化集团华东钻井工程公司, 江苏 镇江 212003; 中国石油化工股份有限公司上海海洋油气分公司, 上海 200120

Drilling Company of East China Petroleum Bureau, SINOPEC, Zhenjiang 212003, China; Shanghai Offshore Petroleum Bureau, SINOPEC, Shanghai 200120, China

套管脱扣落井的主要原因是套管扣加工质量达不到规范要求, 以及套管入井管理不严造成的。处理大尺寸套管落鱼事故时, 要找到与之匹配的成型打捞工具非常困难, 需要施工者在分析现场事故的基础上进行自制加工。合理选择处理套管落鱼的方法能够有效缩短事故的处理时间, 降低事故的经济损失。介绍了大尺寸套管落鱼的几种处理方法, 并针对不同的处理方法, 分别介绍了各自所使用的工具的结构、工作原理以及使用条件和方法, 对今后同类事故的处理具有一定的借鉴意义。

The main reason that casing falls to the hole by breaking off thread is casing thread quality can't reach the criteria, and the management of casing running into the hole is not strict. When handling casing of big size fish accident, it is very difficult to find out ready-made fishing tool to match it. Operator needs to process fishing tools by himself according to the analysis of the problem. The reasonable choosing to the method of handling casing fish can shorten handling time of the accident effectively, and minimize economic loss of the accident. This article introduces several handling methods of casing fish of big size. Aiming to the different handling method, the article introduces each tool of the structure, the work principle and the usage conditions and methods respectively. These handling methods have definite reference value to handle the same kind of accident in the future.