Well Cutting Without Explosives with Multiple Cuts on a Single Run

H. Ghannam, H. Mourani, B. Schwanitz
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Abstract

Pipe cutting operations are often a critical part of stuck pipe situations, well interventions and plug and abandon operations which all need to remove cut sections of pipe from the well. Unlike traditional ‘blade’ style e-line cutters, which can jam under pipe compression or explosive pipe cutters, which need to dress-over the jagged cut by the rig, a new electric line mechanical cutter's unique design enables performance even if the pipe is under compression, in tension or is neutral. It can also perform multiple cuts in the same run, while creating a clean and machined cut with tool-entry friendly shape. This paper will describe the technology of the new generation cutter, present two case histories; one of multiple cuts of stuck drill pipe, per each run in hole, from Germany and one of a critical tubing cut from a subsea well in Nigeria, using electric wireline and tractor conveyed services for many tasks traditionally performed with coiled tubing in highly deviated wells. These "light vs heavy" solutions can often be done off-line from the rig.
在没有炸药的情况下进行一次多次切割
切割管柱作业通常是卡管、油井干预和封井弃井作业的关键部分,这些作业都需要从井中移除切割的管柱。传统的“刀片式”电动割割器可能会在管道压缩或爆炸性割割器的情况下卡住,而爆炸性割割器则需要在钻机切割出的锯齿状割割器上进行修整。新型电动割割器的独特设计使其即使在管道处于压缩、拉伸或中性状态下也能发挥作用。它还可以在同一次运行中进行多次切割,同时创建一个干净的机械切割,具有工具进入友好的形状。本文将介绍新一代刀具的技术,并给出两个案例;在德国,每下入一口井,就会切割多次卡钻,在尼日利亚的一口海底井,就会切割一次关键的油管。在大斜度井中,使用电缆和牵引机输送服务,完成了传统上使用连续油管完成的许多任务。这些“轻与重”的解决方案通常可以在钻机上离线完成。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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