Boring or penetrating the earth – Boring with explosion in inaccessible hole – With position orienting or indicating
Patent
1981-02-27
1983-10-18
Pate, III, William F.
Boring or penetrating the earth
Boring with explosion in inaccessible hole
With position orienting or indicating
175 456, 166 551, E21B 43117
Patent
active
044100515
ABSTRACT:
A system for orienting a well casing perforating gun for utilization in wells having multiple tubing strings wherein it is desired to perforate the well casing in a zone other than the deepest production zone of the well and includes a hoist and associated apparatus for moving the perforating apparatus through the well and actuating the perforating gun. The perforating apparatus includes an elongated housing supportable on a cable, rollers on the exterior of the housing to support it on the interior of the well casing and/or tubing, the casing perforating gun, an orienting apparatus operable to orient the perforating gun relative to a string of tubing within the casing, a swivel within the housing to permit rotating motion of the lower portion of the housing relative to an upper portion of the housing, and an eccentric weight below the swivel to assist in positioning and aligning the casing perforating gun to the desired position.
REFERENCES:
patent: 3064571 (1958-10-01), True
patent: 3175617 (1958-08-01), North
Daniel Wilbur L.
Linyaev Eugene J.
Walkow Arnold M.
Wilkinson Gregory J.
Byron Richard M.
Dresser Industries Inc.
Pate III William F.
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