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The Guide to Oilwell Fishing Operations, 2nd Edition by Joe P. DeGeare

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Chapter 7

Parting the Pipe String

Abstract

After determining the stuck point in a pipe string, the normal procedure is to part the string so that fishing tools, such as jarring strings or washpipe strings, may be run.

Keywords

Abrasive fluid cuts

Chemical cutting

E-line motor-driven cutters

External cutters

Internal hydraulic cutter

Jet cutting

After determining the stuck point in a pipe string, the normal procedure is to part the string so that fishing tools, such as jarring strings or washpipe strings, may be run. There are many acceptable methods of parting the pipe string, including the following:

 Mechanical backoff

 String shot assist backoff

 Chemical cutting

 Jet cutting

 Electric-line (e-line) motor-driven cutting

 Mechanical ...

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