METHOD FOR DEVELOPMENT OF HIGH-VISCOSITY OIL DEPOSIT Russian patent published in 2018 - IPC E21B43/20 E21B43/24 E21B7/04 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to oil reservoir development techniques using production and injection wells and can be used in oil fields, where the extraction of high-viscosity oil from the strata is carried out by the thermal method of displacement of oil by hot water or high-temperature steam. In the method for developing a high viscosity oil deposit that comprises injecting a displacing agent into the formation through a horizontal section of a multifunctional well and the selection of reservoir oil from a perforated section of the same well located horizontally and parallel to the injection zone of the agent, along the length of the band-shaped element PE of the oil deposit or the selected direction of the deposit, multifunctional wells are successively located one after the other so that in the zone of the formation between the injection sites of the agent and the extraction of oil from each well, two further sections of two adjacent multifunctional wells are located: closer to the oil extraction section of the well, the injection site of the neighbor well agent on the left side is located, and closer to the pumping site of the agent of the well, a second oil well extraction section is located on the right side along the length of the PE or the selected direction. Moreover, the horizontal sections of all wells are located in parallel with each other at the same distance from each other and across the length of the strip element. Development of the oil deposit is carried out by dividing the deposit into strip-like elements throughout its area, each of which is developed with the help of a system of multifunctional wells located within the boundaries of PE in accordance with the above-described principle.

EFFECT: organization in the oil reservoir of plane-parallel filtration of formation fluid using a system of multifunctional wells, exclusion of the possibility of formation of stagnant zones in the volume of the entire reservoir, with simultaneous reduction in the number of wells and the distance between injection sites of the displacing agent and selection of reservoir oil.

1 cl, 1 dwg