METHOD OF DEVELOPING OIL POOL USING HORIZONTAL MULTIBRANCH WELLS Russian patent published in 2014 - IPC E21B43/16 E21B43/30 

FIELD: oil and gas industry.

SUBSTANCE: method consists in drilling vertical pressure wells and horizontal producers, in pumping heat carrier through pressure wells, and in withdrawal of production via horizontal producers. Producers are made as multibranch horizontal wells which are drilled upwards oil-water contact, and vertical wells are made at distance not less than 50 m from bottoms of multibranch horizontal wells. Opening of vertical well deposits is made again upwards and downwards of respective bottom of horizontal well, casing string is landed to each injection well and packer is set between openings, displacement agent is pumped through the upper opening into tubular annulus and through the lower opening into casing string.

EFFECT: increasing reservoir recovery, field oil production rate, increasing reservoir coverage by operations, maximum involvement of remaining reserves into development.

1 dwg