Method and apparatus for downhole fishing operations

Details Method and apparatus for downhole fishing operations Method and apparatus for downhole fishing operations

1995-06-13

1997-10-07

Dang, Hoang C.

Wells

Processes

Freeing stuck object, grappling or fishing in well

166 98, E21B 3100

Patent

active

056737548

ABSTRACT:
An accumulator insertable into a well fishing string for delivering upward forces to stuck objects in a well having a cased portion. The accumulator has a housing with a top and a bottom, the top and bottom being attachable to a fishing string. A slippage member is positioned on the housing for engaging the cased portion of the well so that when so engaged, the accumulator is supportively connected to the cased portion against downward movement but the accumulator can move upwardly in the well. An activator connected to the slippage member is provided for engaging the slippage member against the wellbore.

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patent: 5228507 (1993-07-01), Obrejanu et al.

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