METHOD OF HIGH-VISCOSITY OIL OR BITUMEN POOL DEVELOPMENT Russian patent published in 2011 - IPC E21B43/24 

FIELD: oil and gas production.

SUBSTANCE: in a method of high-viscosity oil or bitumen pool development that involves horizontal producer drilling and horizontal extracting chinks, working substance injection through the producers and production selection through the producers; the producers are drilled with bottomhole lifting inside a formation, while a injector bottomhole is arranged in the formation over the centre of a horizontal portion of the producer at a distance to prevent heat carrier flush between the wells; the injector is penetrated in a bottom half of a productive formation, while the producer is penetrated along the full length of the well found in the productive formation; production is carried out from the producer bottom with permanent temperature control along the full length of the penetrated portion with dividing this portion into temperature zones with product temperature rise to 80-90 % from heat-carrier flush temperature between the chinks in a selection zone; selection is transferred towards a producer mouth to temperature zones where heat-carrier flush is prevented, but with maximum fluidity, if observing product temperature fall in the selection zone, selection is transferred from the mouth to the higher temperature zone.

EFFECT: more efficient high-viscosity oil displacement, including by wider formation coverage by an exposure agent due to consecutive formation processing.

1 ex, 1 dwg