Full bore gun system

Details Full bore gun system Full bore gun system

E - Fixed Constructions

21

B

E21B 43/117 (2006.01) E21B 43/1185 (2006.01) E21B 43/119 (2006.01)

Patent

CA 2330795

A tubing conveyed perforating apparatus (160) is shown which includes a tubular assembly made up of a plurality of tubular sections (161, 163, 165). A plurality of explosive charges (175) are located within the interior bore of at least two of the tubular sections of the tubular assembly. A firing head is carried on the tubular assembly for detonating the explosive charges (175) to perforate a surrounding well bore. The firing head has a concentric detonator arrangement (205, 209, 211, 214) within a hollow central bore (170). The explosive charges (175) are held within the interior bore of the tubular section by a support (179). The explosive charges (175) and charge support (179) are comprised of materials which disintegrate upon detonation of the explosive charges, whereby the interior bore of the tubular assembly is fully open after detonation.

L'invention concerne un appareil (160) transporté par tube comportant un ensemble tubulaire constitué d'une pluralité de sections tubulaires (161, 163, 165). On dispose une pluralité de charges explosives (175) à l'intérieur de l'alésage intérieur d'au moins deux des sections tubulaires de l'ensemble tubulaire. On dispose une tête de mise à feu sur cet ensemble tubulaire pour faire exploser les charges explosives (175) et ainsi forer un puits de forage concentrique. La tête de mise à feu comporte un dispositif de détonation concentrique (205, 209, 211, 214) disposé à l'intérieur d'un alésage central creux (170). Les charges explosives (175) sont maintenues au moyen d'un support (179) à l'intérieur de l'alésage intérieur de la section tubulaire. Ces charges explosives(175) et ce support de charges (179) sont composés de matériaux qui se désintègrent lors de la détonation des charges explosives, ce qui permet d'ouvrir totalement l'alésage intérieur de l'ensemble tubulaire après la détonation

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