METHOD FOR DEVELOPMENT OF HIGH-VISCOSITY OIL DEPOSIT Russian patent published in 2019 - IPC E21B43/24 E21B7/04 E21B47/06 

FIELD: oil industry.

SUBSTANCE: invention relates to the oil-producing industry. Method of development of high-viscosity oil deposits includes the construction of a horizontal injection well and a production well in the reservoir, located below and parallel to the injection well, the descent into the injection well of two columns of tubing – tubing of different diameters with the placement of the ends in different intervals of the horizontal wellbore, descent of a pumped-down tubing well to a production well on a tubing string, equipped with temperature and pressure sensors and an optical fiber cable along the entire filter length, injecting steam through an injection well and pumping a production pump into the production well, carrying out thermobarometric measurements by means of geophysical studies in a production well, the results of which reveal zones with extremely high temperatures in a horizontal well of a production well. In the presence of extremely high temperatures in the interval of the ends of the tubing strings in the injection well and/or in the pump intake interval in the production well, the tubing strings are shifted the way the ends of the tubing strings and/or pump intake in the injection and/or production well, respectively, are in a less heated interval at a distance of at least 50 m from the initial installation.

EFFECT: technical result is an increase in the efficiency of the development of a heavy oil field or bitumen due to the uniform heating of the steam chamber by changing the intervals of injection of the coolant and/or product selection.

1 cl, 1 dwg