OIL-AND-GAS POOL DEVELOPMENT METHOD Russian patent published in 2006 - IPC E21B43/18 

FIELD: oil and gas production, particularly to develop oil and gas pools confined to complex field.

SUBSTANCE: method involves arranging producing wells in zone with dominating filtering channels; forming injection wells in zones with reduced fluid injectivity; injecting agent in wells and producing fluid. Filtering channel orientation is additionally determined in reservoir. Hydraulic reservoir fracturing is carried out along with channel stabilizing. Wells are provided with jet pump having washable insert. Filtering channels are cleaned along with differential pressure drawdown increase, wherein the differential pressure drawdown in producing well is regulated for liquid level and/or bottomhole pressure stabilization at each differential pressure drawdown application stage. Differential pressure drawdown in injection well is regulated for reservoir injectivity reduction at each differential pressure drawdown application stage. Agent injection is controlled in dependence of filtering channel direction in well zone of reservoir, namely the closer is filtering channels orientation to 00 the greater is agent injection pressure. Liquid is produced in "accumulation/discharge" cyclic regime.

EFFECT: increased oil recovery from reservoir and oil-and-gas saturated zone coverage with differential pressure application.

2 cl, 3 ex, 3 tbl