초록 ▼

A perforating gun having an elongated mounting strip and a selected wave or non-linear, zig-zag form as seen in a plan view, with an outer surface diameter sized for convenient insertion and removal from a well. The mounting strip has a series of openings spaced in intervals for mounting capsule exp

A perforating gun having an elongated mounting strip and a selected wave or non-linear, zig-zag form as seen in a plan view, with an outer surface diameter sized for convenient insertion and removal from a well. The mounting strip has a series of openings spaced in intervals for mounting capsule explosive charges in a phased relationship between 0 and 360 degrees. The cross-sectional area of the mounting strip around each opening is selected to prevent fragmentation of the carrier upon detonation of the charges. The mounting strip is preferably metallic with a selected amplitude and wave length. In each opening is an explosive capsule with a hollow cap with a nose for attachment to one of the openings. The cap has an annular, interior thread with a thread run-out of selected width. The explosive capsule has a hollow body having an open end with exterior threads and a width less than the width of the thread run-out in the cap to permit free spinning of the body in the cap after thread makeup for convenient threading and connection with the detonating cord.

대표청구항 ▼

A perforating gun for carrying a plurality of shaped explosive charges connected by a detonating cord to perforate a section of a well in a selected pattern, comprising: an elongated, non-linear zig-zag strip having an exterior surface defining an outer diameter which is cylindrical when viewed from

A perforating gun for carrying a plurality of shaped explosive charges connected by a detonating cord to perforate a section of a well in a selected pattern, comprising: an elongated, non-linear zig-zag strip having an exterior surface defining an outer diameter which is cylindrical when viewed from the top along a longitudinal axis, the exterior surface being sized for convenient entry and removal from a well; a series of openings spaced in intervals along a length of the non-linear zig-zag strip to serve as mounts for the shaped explosive charges to be arranged in an angular phase relationship to correspond with said selected perforation pattern in the well; at least selected ones of said shaped explosive charges having a hollow cap with a nose which engages said openings in said strip and having an associated hollow body which contains an explosive; the cross-sectional area of the strip around each opening being selected to prevent fragmentation of the carrier upon detonation of the shaped explosive charges; whereby the non-linear zig-zag strip may be positioned in the well, the shaped explosive charges detonated to create perforations in the selected pattern and retrieved from the well.