DEVELOPMENT OF INHOMOGENEOUS DEPOSIT BY INCLINED AND HORIZONTAL WELLS Russian patent published in 2014 - IPC E21B43/12 E21B43/14 E21B33/13 

FIELD: oil-and-gas industry.

SUBSTANCE: proposed method comprises construction of horizontal and/or inclined wells. Patches are applied at boundaries of zones of different permeability. Technological strings with packers are lowered to be set opposite patches to seal annular space. At a time, injection and production wells are separately operated at opening and closing of appropriate zones. Sections with shaft high watering and their hydrodynamic communication with nearby wells are defined. Technological pipe string is lowered in the well with hydrodynamic communication. Watered ground is isolated on both sides with injection of water-shutoff agent in one of the wells and intensive removal of watered fluid from wells equipped with technological pipes. At decrease in pickup and technological holding, injection of water-shutoff composition is effected in all wells equipped with technological pipes to make water-shutoff shield. Thereafter, sections processed by water-shutoff compositions in every well are tightly shutoff from inside and put in operation.

EFFECT: higher yield, lower extraction of produced water.

2 cl, 2 dwg