PROCEDURE FOR DEVELOPMENT OF HEAVY OIL AND BITUMEN DEPOSITS Russian patent published in 2011 - IPC E21B43/24 

FIELD: gas and oil production.

SUBSTANCE: procedure for development of deposits of high viscous oil and bitumen consists in construction of horizontal producer and vertical pressure wells, in pumping working substance into pressure wells and in withdrawal of product from producer. Pressure wells are arranged above the horizontal producer at 5-10 metres with a grid 50×250 metres and are opened up along total interval of the pay. The horizontal well is equipped with temperature sensors along total length with analysis of temperature at sections corresponding to pressure wells. The pressure well corresponding to this zone is insulated from bottom hole in interval of 5-15 metres when temperature at the section reaches outbreak temperature. Further, temperature on the producer is controlled and interval-by-interval cut-off in pressure wells is performed similarly to complete and uniform pay heating.

EFFECT: raised recovery of oil.

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