METHOD FOR DEVELOPING HIGH-VISCOSITY AND BITUMINOUS OIL DEPOSITS Russian patent published in 2022 - IPC E21B43/24 E21B7/04 E21B47/06 

FIELD: oil industry.

SUBSTANCE: invention relates to the oil industry and can be used in the development of deposits of high-viscosity and bituminous oil. The method for developing a high-viscosity and bituminous oil field includes the construction of a horizontal production well and an injection well located above and parallel to the production well, creating a permeable zone between the wells by injecting a coolant - steam - into both wells, injecting steam into the injection well, withdrawing products from the production well. At the same time, changes in temperature and pressure at the intake of the deep-well pump are monitored. When the downhole pump reaches a pressure of 0.1 MPa and a temperature of 118°C and above, or a pressure of 0.2 MPa and a temperature of 131°C and above, or a pressure of 0.3 MPa and a temperature of 141°C and above, or a pressure of 0 .4 MPa and temperatures of 149°C and above, or pressures of 0.5 MPa and temperatures of 156°C and above, the dryness of the injected steam is reduced to 80-89%. When the downhole pump reaches a pressure of 0.1 MPa and a temperature of 107°C and below, or a pressure of 0.2 MPa and a temperature of 120°C and below, or a pressure of 0.3 MPa and a temperature of 130°C and below, or a pressure of 0 .4 MPa and temperatures of 138°C and below, or pressures of 0.5 MPa and temperatures of 145°C and below, the dryness of the injected steam is increased to 95-97%.

EFFECT: increasing the efficiency of developing paired horizontal wells by maintaining the rate of well heating, maintaining trouble-free operation of wells using the steam gravity method.

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