METHOD FOR THERMAL-CHEMICAL TREATING OF BOTTOM HOLE AREA Russian patent published in 2015 - IPC E21B43/27 

Abstract RU 2539493 C1

FIELD: oil and gas industry.

SUBSTANCE: invention aims at restoring filtration characteristics of bottom hole areas of oil-and-gas wells disturbed while in service, with the use of hydroreactive metals. A method for the thermal-chemical treating of the bottom hole area of the well in the routine cycle mode: sodium feed in aluminium barrels enclosed in a hermetically sealed container onto the bottom hole, initiating a reaction of the above metals, keeping, lifting up the container in the hesitation mode equal to 5-10 min, descending the container at 0.2-1 m/minute.

EFFECT: more effective exposure for greater-depth productive formations and cost saving.

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RU 2 539 493 C1

Authors

Nizov Vasilij Aleksandrovich

Danijarov Sergej Nikolaevich

Dates

2015-01-20Published

2013-07-19Filed