METHOD OF OIL-BEARING BED DEVELOPMENT Russian patent published in 2017 - IPC E21B43/00 E21B43/26 

FIELD: oil and gas industry.

SUBSTANCE: method of oil-bearing bed development comprises drilling and alternation every-other-row by placing rows of horizontaldevelopment wells and rows of horizontal injection wells at the first distance from each other. Horizontal development well bores and horizontal injection well bores are positioned in the direction of minimum horizontal stress in the bed so as to ensure the propagation of hydraulic fractures perpendicular to the horizontal well bores direction. At least two hydraulic fractures are mounted at the casing columns of injection and development wells, located at the second distance from each other and providing communication between the wells and the bed. A multistage hydraulic fracture is carried out through hydrofracing ports in the development and injection wells so that hydraulic fracture cracks are formed along each well perpendicular to the bore direction. The hydraulic fracture cracks of injection wells are offset from the hydraulic fracture cracks of the development wells at the third distance. The wells are placed in operation by pumping fluid into the injection wells with control of flow and/or volume of pumped fluid so that the pumping pressure is below the hydraulic fracturing pressure.

EFFECT: ensuring ultimate hydrocarbon recovery from the deposit, maximized productivity ratio.

5 cl, 4 dwg