DEVELOPMENT METHOD OF SUPER-VISCOUS OIL DEPOSIT Russian patent published in 2020 - IPC E21B43/24 E21B7/04 E21B47/06 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to the oil-producing industry. Method of super-viscous oil deposit development includes construction of several parallel horizontal wells within one formation and separate well above parallel wells, located at approximately equal design distance from bottomhole of parallel wells, excluding heat carrier breakthrough, but allowing to create hydrodynamic connection with all wells – at a distance in plan 50±15 m to their faces. Additional wells are built parallel to separate well above horizontal shafts of parallel wells to mouth side, arranged in a row at a distance from each other, which allows uniform heating of the formation space above the parallel wells without the heat carrier breakthrough into each other. Production wells are equipped for constant monitoring of temperature sensors along the whole length. At bed heating pumping of heat carrier till formation of hydrodynamic connection is carried out to all wells through one in corresponding row, successively switching at reaching at least in one of production wells temperature close to temperature of heat carrier breakthrough. After hydrodynamic coupling is achieved, pumping of heat carrier is performed through all injection wells with periodic shutdown of injection in that well, in crossing with which at least in one of production wells temperature will be increased to temperature close to heat carrier breakthrough temperature. Pumping is resumed at temperature drop in this intersection to allowable one determined empirically.

EFFECT: accelerated uniform rate of heating of productive formation without breakdown of heat carrier.

1 cl, 2 dwg