PROCEDURE FOR DEVELOPMENT OF HIGH VISCOUS AND HEAVY OIL DEPOSIT BY THERMAL TREATMENT Russian patent published in 2011 - IPC E21B43/24 

FIELD: gas and oil production.

SUBSTANCE: procedure consists in drilling horizontal collinear pressure wells and producers located within ranges of one reservoir, in pumping heat carrier into pressure wells and in withdrawal of product - high viscous and heavy oil - from producers. According to the invention horizontal producers are drilled in one interval from one main horizontal borehole, while horizontal pressure wells are drilled from another main horizontal borehole opposite to producers alternating with them in the same interval. When during development there occurs water influx of product withdrawn from the main borehole of producers, recovery of product and heat carrier pumping are stopped. Product from each producer is examined and there is determined producer with the most water encroached product. Further, pressure wells next to this well are insulated from their main borehole and recovery of product and heat carrier pumping are carried out under a normal mode. At secondary water influx of product from the same horizontal producer it is disconnected from the main borehole. When product withdrawn from the main borehole of producers is water encroached, operations with other producers and pressure wells are performed similarly.

EFFECT: increased efficiency of procedure due to reduced cost and due to control over water influx of product.

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