Oilfield Glossary

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Note: Definitions provided on this website are for reference purposes only. Engineers and professionals should independently confirm all information using industry standards.

fishing tools

Fishing tools are specialized mechanical devices used to retrieve lost or stuck equipment ('fish') from the wellbore. The 'fish' could be anything from a broken drill bit or a piece of wireline to a dropped wrench. Successful fishing is an art that requires precise tool selection and manipulation.

Tools are categorized by how they engage the fish. 'Overshots' grip the outside of the object, while 'Spears' grip the inside. Other tools like 'Jars' deliver high-impact mechanical blows to jar the stuck object free, and 'junk baskets' are used to retrieve small debris.

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