METHOD FOR OIL AND GAS FIELD DEVELOPMENT Russian patent published in 2006 - IPC E21B43/20 

FIELD: multizone oil and gas field development, particularly to control hydrocarbon field development at later operation stage.

SUBSTANCE: method involves increasing productive reservoir sweep efficiency under the action of processing agent to be injected into formation through injection well; producing hydrocarbon product through producing wells. Regime of processing agent supplying into injection well and/or hydrocarbon product extraction from producing well is shifted into unsteady regime by pressure change during processing agent supplying into injection well and by product flow rate change, which is in anti-phase with above processing agent supply, through equal time intervals. Then cross-correlation pressure and flow rate functions in injection and production wells are determined. Frequency properties of production reservoir, namely reservoir pressure, filtering and capacitance coefficients, for instance permeability, porosity, water permeability and productivity, are determined from above function parameters. During field development rate of hydrocarbon product extraction from producing well and time of hydrocarbon product extraction are maintained to provide maximal ratio of hydrocarbon product displacement coefficient after the action to that before above action.

EFFECT: increased final gas and oil recovery from reservoirs due to hydrocarbon product displacement control.

5 cl, 4 dwg