METHOD OF SUPER-VISCOUS OIL FIELD DEVELOPMENT Russian patent published in 2018 - IPC E21B43/24 E21B7/04 E21B47/06 

FIELD: oil industry.

SUBSTANCE: invention relates to oil-producing industry. Method of developing deposits of super-viscous oil at a late stage involves the construction of pairs of horizontal production and injection wells located one above the other, equipped with appropriate tail filters in the horizontal part, heating of the reservoir by pumping heat-carrying medium (steam) into both wells while heating the reservoir and creating a steam chamber, steam injection through injection wells, product selection due to steam and gravity drainage through production wells and monitoring of the state of the steam chamber. After development of the deposit site, the injection of steam and the selection of fluid in one of the pairs of wells are stopped. After decreasing the temperature in the production well below 80 °C, the tail filter is removed from the cooled production wells. A new horizontal wellbore is drilled from the production well, which is later equipped with a tail filter in the direction of the non-developed areas. Steam is pumped into both wells to obtain a hydrodynamic connection between the holes and maintain the required temperature. Steam is pumped through the injection well and product selection is carried out due to steam and gravity drainage through a new production wellbore with monitoring of the state of the steam chamber.

EFFECT: technical result is an increase in the selection of the reservoir production and the oil recovery rate at the field without high costs due to the introduction of deposit areas that are not covered by warm-up and production.

1 cl, 2 dwg, 1 ex