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

FIELD: oil industry.

SUBSTANCE: invention relates to methods of reservoir and production engineering. In the method for developing a reservoir of high viscosity oil comprising in injecting a displacing agent, for example steam, into the formation of the overlying horizontal wellbore of a multifunctional well, and in selecting of formation oil from the underlying horizontal wellbore, located parallel to the upper wellbore, along the length of the strip-like element of the oil deposit or in the selected direction of the deposit multifunctional wells with two horizontal wellbores are arranged in series one behind the other, so that in the zone of the formation, the horizontal distances between the injection of the displacing agent and the selection of oil are the same. Moreover, the injecting wellbores of the displacing agent should be located with a displacement of half the distance between the wellbores relative to the underlying wellbores of oil withdrawal, so that the vertical projection of each wellbore by pumping the displacing agent onto the hollow with the wellbores of oil withdrawal will be at an equal distance from the wellbores of oil withdrawal.

EFFECT: technical result is the provision of influence on oil in both vertical and horizontal directions, achieving a more complete underbreaking of the formation.

1 cl, 2 dwg