METHOD FOR EFFECTING OIL BED Russian patent published in 2005 - IPC

FIELD: oil industry.

SUBSTANCE: method includes pumping active environment into bed, in form of water solutions and suspensions, containing alkali, calcium, magnesium, iron and other metals salts, and also atomic elements, active ions and other components, interacting with forming of not water-soluble precipitations in water-washed bed channel, while said water solutions are produced by letting constant electric current with density 0.1-2 A/sm², voltage 15-180 V through drain mineralized water during time, necessary to provide for given value of hydrogen coefficient in range pH=2-14, and pumping is performed by buffers, which are forced by drain water of bed pressure support system. Letting constant electric current through drain mineralized water is performed in special ground plant, using body of its tank as cathode or in zone of force well perforation, using casing column as cathode.

EFFECT: higher oil yield.

3 cl