陷落柱定向斜井下套管技术

Casing Technology of Directional Deviated Well in Collapse-columns

摘要:

介绍了陷落柱地层施工定向斜井下套管前顺孔难点及事故井管处理方法，以及一种简单易行的顺孔管落井事故打捞工具的制做方法。该打捞工具简单、有效，能快速处理大直径井管落井事故，缩短事故处理时间，减少事故造成的损失；提出了与常规下套管存在的差异及其注意事项。为今后施工类似钻孔积累了宝贵经验。

Abstract:

The paper discusses the difficulties of hole cleaning before casing for directional deviated well construction in collapse-columns and presents an easy manufacturing method of fishing tool for hole cleaning pipe, which can handle fishing rapidly and effectively with less loss. The difference to common casing and the operation attentions are put forward.