Shaped charge casing cutter

摘要

A shaped charge casing cutter is constructed with the cutter explosive formed into radial section modules aligned in a toroidal cavity between a pair of housing plates. The center sections of the housing plates are contiguously aligned with opposite parallel surfaces of a center disc. The housing plates comprise annular edges or rims, and the rims can be offset from respective center disc planes in opposite directions from each other to form a toroidal cavity. The toroidal cavity is enclosed by a circumferential belt secured to said housing plate rims. V-grooved shaped charge explosive in the form of multiple pi sections is distributed about the cavity to intimately contact a pair of frusto-conical liners. Assembly tolerance space between the pi sections is filled by dense paper card stock.

主权项

1. A shaped charge pipe cutter having a ring of shaped charge explosive, wherein the shaped charge pipe cutter comprises:
a plurality of radial modules, wherein each of said plurality of radial modules comprises radially aligned side planes, wherein a collective assembly tolerance space is formed between at least one pair of said radially aligned side planes of said plurality of radial modules, and wherein said collective assembly tolerance space is filled by at least one paper shim.