THERMOSHAFT METHOD OF HIGH-VISCOSITY OIL POOL DEVELOPMENT Russian patent published in 2015 - IPC E21B43/24 

FIELD: oil and gas industry.

SUBSTANCE: thermoshaft method of high-viscosity oil pool development includes the injection of a heat carrier to an oil reservoir through vertical injectors, extraction of a formation fluid through upward and horizontal producers drilled from the drilled pathway of the oil formation, at that in the drilled pathway wellheads of producers of the upper and lower layers are coupled in pairs by pipelines with stop valves and the production of the formation fluid is carried out in a cyclic mode, the producers of the upper layer are used in an injection mode until the wells of the lower layer are filled and in a production mode - until the minimum or complete discharge of the formation fluid is obtained.

EFFECT: improved crude oil recovery factor, even heating of the formation from up to bottom.

2 dwg