DEVELOPMENT METHOD OF DEPOSITS OF HIGH-VISCOSITY OIL OR BITUMEN Russian patent published in 2013 - IPC E21B43/24 

FIELD: oil and gas industry.

SUBSTANCE: method involves drilling of injection and production horizontal wells with location of a working face of an injection well above the middle part of horizontal production well, pumping of heat carrier through injection wells, extraction of product through production horizontal wells with monitoring of the product temperature. When allowable temperature is exceeded, a packer is installed and then transferred in a production well for extraction in a section of horizontal shaft with lower temperature. An injection well is drilled above a production well in its direction. Injection well is equipped with additional portable blind packer, which is transferred in horizontal section from well head to working face parallel to packer of production well, which is installed after break of heat carrier from injection well to production well with creation of hydrodynamic communication between those wells for cutout of heat carrier break section. At further break of heat carrier from injection well to production well above the installed packer, it is reinstalled in series above heat carrier break sections.

EFFECT: increasing oil recovery of a formation, increasing the coverage range of the formation with an agent influencing due to enlarging the formation warm-up zone.

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