DEVICE WITH GUN-POWDER CHARGE FOR WELL STIMULATION AND METHOD THEREFOR Russian patent published in 2007 - IPC E21B43/263 

Abstract RU 2311530 C1

FIELD: oil and gas production, particularly to stimulate well zone of oil-gas reservoir for all well types, including steeply inclined and horizontal ones.

SUBSTANCE: device comprises gun-powder charge connected to logging cable and including solid-fuel members formed of non-metallized ballistite or solid rocket propellant mix and shaped as cylinders provided with central round channels, wherein channel length and diameter are related as (20...40):1. The solid-fuel members have stabilizing filler taken in amount of not more than 1.5% of charge mass. Solid-fuel members are connected to load-carrying cable extending through central channels or outside solid-fuel members. Gaps covered with combustible bushes are left between solid-fuel members. Solid-fuel members are put in protective case. Ignition unit is made as glowing filament built in one solid-fuel member or is located near solid-fuel member provided with leads along with ignition charge and is linked to current-carrying threads of logging cable. Safety shaft is arranged between logging cable and charge. Method involves applying thermal gas-chemical, pressure and vibro-wave action to productive reservoir by combusting solid-fuel charge within reservoir interval. Charge is combusted in horizontal wells with the use of above described device.

EFFECT: extended functional capabilities, possibility to reach high hydrocarbon output from well, creation of additional low-frequency vibro-wave action on productive reservoir with the use of solid-fuel charges.

2 cl, 1 dwg

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RU 2 311 530 C1

Authors

Romanovich Aleksej Pavlovich

Kuz'Mitskij Gennadij Ehduardovich

Pelykh Nikolaj Mikhajlovich

Loktev Mikhail Vasil'Evich

Korzhenevskij Arnol'D Gennad'Evich

Korzhenevskij Andrej Arnol'Dovich

Kharisov Rinat Gatinovich

Mukhamadiev Ramil' Safievich

Kustov Vasilij Gennad'Evich

Dates

2007-11-27Published

2006-02-27Filed