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

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Chapter 1

Conventional Fishing

Abstract

In oil-field operations, fishing is the technique of removing lost or stuck objects from the wellbore. The term fishing is taken from the early days of cable-tool drilling. At that time, when a wireline would break, a crew member put a hook on a line and attempted to catch the wireline to retrieve, or “fish for,” the tool. Necessity and ingenuity led these oil-field fishers to develop new “bait.” The trial-and-error methods of industry’s early days built the foundation for many of the catch tools used currently. Fishing jobs fall into three categories: open hole, when there is no casing in the area of the fish; cased hole, when the fish is inside casing; or thru-tubing, when it is necessary to fish ...

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