METHOD OF PRODUCTION OF HIGH VISCOUS OIL AND BITUMEN Russian patent published in 2015 - IPC E21B43/24 E21B43/267 E21B7/04 

FIELD: oil and gas industry.

SUBSTANCE: under the method of production of high viscous oil and bitumen a multilateral well is drilled, it contains main hole and parallel top and bottom offshoots drilled from the main hole, located by pairs one under another at distance 15 m in the horizontal direction within the formation. Then in top offshoots of the multilateral well one at a time hydraulic fracturing of the formation is performed with creation of the cracks of the hydraulic fracturing along full length of the top offshoots with their further casing by the proppant out of the current conducting material. Then in the initial and final sections of each top offshoot by pairs the vertical wells are drilled with the crossing of cracks of the formation hydraulic fracturing. The electrodes are run in the vertical wells in the interval of crossing with the cracks of the formation hydraulic fracturing of the top offshoots. At the wellhead of the multilateral well the electrodes are connected with the electric substation. The submersible electric centrifugal pump is run in the pipes string in main hole of the multilateral well. The electric substation is switched on, and the deposit is heated through the top offshoots. The submersible electric centrifugal pump is started, and heated high viscous oil and bitumen are extracted from the bottom offshoots by the submersible electric centrifugal pump via the pipes string to the surface.

EFFECT: increased efficiency of deposit of the high viscous oil and bitumen; increased deposit coverage by heat effect with its uniform heating; increased extraction of heated high viscous oil and bitumen; increased reliability of the method implementation.

2 dwg