Decentralized casing hole puncher

Wells – Processes – Perforating – weakening – bending or separating pipe at an...

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Details

166 55, 175 452, E21B 43117

Patent

active

051118858

ABSTRACT:
An explosive charge carrier is provided which is lowered into a well pipe casing. The carrier includes wear plates that slide along the inner diameter of the pipe and which are biased against the inner wall of the well pipe casing. A string of explosive charges having a density of up to six charges per foot are mounted between disks of the carrier which are separated by 12 inches. Spaced about the periphery of the separated disks are a maximum density of six strings of charges separated by 60.degree. for 36 explosive charges. Alternately, four strings of charges may be spaced about the periphery of the separated disks at a spacing of 90.degree. for 16 explosive charges.

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