Wells – Processes – Perforating – weakening – bending or separating pipe at an...
Patent
1993-11-10
1995-06-13
Neuder, William P.
Wells
Processes
Perforating, weakening, bending or separating pipe at an...
166 55, 175 452, E21B 43116
Patent
active
054233828
ABSTRACT:
Apparatus engageable with a well casing for suspending a perforating gun in the casing. The apparatus includes toothed slips forced into engagement with the well casing. A spring maintains an engaging force on the slips with the casing. In response to detonation of the perforating gun, a first release mechanism is operated to allow the perforating gun to drop a short distance. After initial dropping of the perforating gun, a second release mechanism is operated to release the engagement of the toothed slips with the casing, thereby allowing the entire unit to fall to the bottom of the well. A retrieval tool attached to a tubing string can be utilized to operate the second release mechanism, disengage the unit from the casing, and retrieve it from the well.
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Guiberson Dresser--Service Tools (undated).
Guiberson Dresser--Seal Bore Packer Systems (undated).
Barton John A.
Davidson Robert G.
Wilkin James F.
Dresser Industries Inc.
Neuder William P.
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