초록 ▼

A perforating gun and method permit a casing or liner within a well to be perforated even within a section obstructed by sand either before or after perforation. The perforating gun comprises a support for carrying a plurality of explosive charges and one or more channels for conducting a fluid thro

A perforating gun and method permit a casing or liner within a well to be perforated even within a section obstructed by sand either before or after perforation. The perforating gun comprises a support for carrying a plurality of explosive charges and one or more channels for conducting a fluid through the support, which channels are spaced from where the plurality of explosive charges are carried on the support. A method of perforating a well comprises: lowering a perforating gun into the well; flowing fluid through the perforating gun before or after the perforating gun is detonated; and detonating the perforating gun.

대표청구항 ▼

A perforating gun comprising: support means for carrying a plurality of explosive charges, said support means including a cylindrical body having an axial opening therein from which a plurality of circumferentially and longitudinally spaced radial ports are defined through said body and a cylindrica

A perforating gun comprising: support means for carrying a plurality of explosive charges, said support means including a cylindrical body having an axial opening therein from which a plurality of circumferentially and longitudinally spaced radial ports are defined through said body and a cylindrical sleeve having a plurality of ports defined therein, said sleeve receiving said body so that said ports of said body and said sleeve are aligned; channel means for conducting a fluid through said support means, said channel means comprising two parallel longitudinal grooves positioned between each set of circumferentially adjacent ports of said body and seal means between each aligned port in said body and said sleeve and between each of said ends of said body and said sleeve. A method of perforating a well, having a slotted liner disposed therein into which said was collected comprising: lowering a perforating gun into the well; flowing fluid through the perforating gun before the perforating gun is detonated, whereby said contained in said slotted liner is flushed therefrom so that a space is created to receive said perforating gun within said slotted liner; and detonating the perforating gun.