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2 347 065

(13)

(51)

IPC

E21B43/117(2006-01-01)

F42B1/32(2006-01-01)

(21) (22)

Application

2005110154/03, 2005-04-07

(24)

Start date

2005-04-07

(22)

Actual filing date

2005-04-07

(45)

Published

2009-02-20

(72)

Inventor

Potapov Valerij AvdeevichLevin Vladimir GenrikhovichSlepnev Anatolij ViktorovichJatsenko Aleksandr ViktorovichMarochkin Vladimir Aleksandrovich

(73)

Holder

Federal'Noe Gosudarstvennoe Unitarnoe Predprijatie

SHAPED CHARGE OF BOTH-SIDE ENCASED ROCK DRILL Russian patent published in 2009 - IPC E21B43/117 F42B1/32

Abstract RU 2347065 C2

FIELD: oil and gas industry.

SUBSTANCE: invention refers to oil and gas industry, specifically to production of shaped charges of the rock drill for completion of producing oil and gas wells. The shaped charge of the rock drill contains the case with in-built profiled block BB with charge hollow encased with two layers: internal and external. Herewith internal encasing is made of mixed copper and tungsten powders in ratio 40:60 wt %, while the external layer consists of mixed potassium perchlorate and aluminium powders in ratio 80:20 wt % respectively.

EFFECT: higher hydrodynamics of drilled channel, higher channel depth, diameter uniformity and absence of stamp mill formation.

5 cl, 1 tbl, 1 dwg

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RU 2 347 065 C2

Authors

Potapov Valerij Avdeevich

Levin Vladimir Genrikhovich

Slepnev Anatolij Viktorovich

Jatsenko Aleksandr Viktorovich

Marochkin Vladimir Aleksandrovich

Dates

2009-02-20—Published

2005-04-07—Filed