METHOD FOR MINE PRODUCTION-WELLS OF HARD (BITUMINOUS) OIL AND SYSTEM OF EQUIPMENT THEREFOR Russian patent published in 2016 - IPC E21B43/24 E21B36/00 E21B43/00 

FIELD: power engineering.

SUBSTANCE: group of inventions relates to fuel-power complex and can be used for extraction of difficult high-viscosity (bitumen) oil. Method is used for capital mining operations on opening of bitumen oil deposit with the help of shafts and underground mining and development drifts. It is necessary to create from the main and local underground mine-preparatory drifts the channels for access to the productive formation in the form of injection-heating wells for thermal and gas-liquid effect on productive formation. Injection-heating wells are drilled in the upper part and inclined within the thickness of the productive formation; they are equipped with tubular heat exchange devices connected to a device for heating and circulation of the heat-bearing fluid medium. Oil extracted through production wells, drilled in the lower part of the productive formation. Actual mining for well production of bitumen oil is carried out with supply of liquefied propane-butane mixture into circular gaps between perforated casings of injection-heating wells and tubular heat exchange elements of systems for circulation of heat-bearing fluid medium. Dry stripped gas containing mainly methane gas, is supplied, via a shaft gas line to the surface and used as fuel gas at a gas-turbine power plant for generation of electric and heat energy. Besides, dry stripped gas is also used as fuel gas for heating of heat-bearing fluid in circulation systems of injection-heating wells.

EFFECT: technical result: reduced power consumption during exercising thermal effect on productive formation and increased oil recovery.

2 cl, 6 dwg, 5 ex