WELL PERFORATION DEVICE Russian patent published in 1999 - IPC

Abstract RU 2138624 C1

FIELD: mining industry. SUBSTANCE: device can be used in explosion perforating equipment at opening of productive beds in oil and gas wells. Well perforation device has detonating cord, body, explosive charge installed with clearance at side of detonating cord, and sheathing. Clearance at side of detonating cord is made with cylindrical part transferring into widening tapered part. Area of tapered part base is larger than area of explosive charge base at point of their contact. Length of cylindrical part is larger than its diameter. Cone angle of tapered part is from 90 to 120 deg. Clearance is filled with highly sensitive explosive material of low density. Tapered configuration of charge at side of explosive material can be made as transforming into cylindrical configuration. Application of aforesaid well perforation device ensures high perforating capacity due to preventing displacement at bringing shock wave to explosive material. EFFECT: higher efficiency. 1 cl, 2 dwg

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RU 2 138 624 C1

Authors

Pogorelov V.P.

Khisamov R.S.

Minibaev Sh.Kh.

Poltorykhin S.V.

Fedotov A.P.

Esipov A.V.

Dates

1999-09-27Published

1999-03-29Filed