A high-energy combined well perforating device

E - Fixed Constructions – 21 – B

Patent

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Details

E21B 43/116 (2006.01)

Patent

CA 2446888

The invention relates to a perforating device comprising one or more perforating gun (1) installed in a perforating body (9), a perforating gun head (2) in the uppermost end of the perforating body (9), a perforating gun base (7) in the lowermost end of the perforating body (9) and a detonating device (3) installed inside or outside the perforating head (2), in which a charge frame (10, 22) is installed inside of the perforating body (9). A plurality of perforator unit connected each other by a detonating cord (15) are provided on the charge frame (10, 22). Every perforator unit comprises a combustible box (11) in a charge socket, a charge (13) in charge housing (12) and energy-bearing media (14). The perforating device is easy to manufacture with low cost and can be used securely in the operation.

L'invention se rapporte à un dispositif de perforation comprenant un ou plusieurs perforateurs (1) installé(s) dans un corps de perforation (9), une tête (2) de perforateur logée dans l'extrémité supérieure du corps de perforation (9), une base (7) de perforateur placée à l'extrémité inférieure du corps de perforation (9) et un détonateur (3) placé à l'intérieur ou à l'extérieur de la tête de perforation (2), dans laquelle une structure de charge (10, 22) est logée dans le corps de perforation (9). On prévoit une pluralité d'unités de perforation reliées entre elles par un cordeau détonant (15) sur la structure de charge (10, 22). Chaque unité de perforation comporte une boîte d'explosifs (11) placée dans un support de charge, une charge (13) placée dans un boîtier (12) et un support (14) porteur d'énergie. De plus, on prévoit un manchon (28) de support porteur d'énergie à l'extérieur du dispositif de perforation. Ce dernier est facile à fabriquer, à un coût modique et peut être utilisé en toute sécurité.

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