METHOD OF DEVELOPMENT OF OIL-GAS DEPOSIT Russian patent published in 1997 - IPC

FIELD: oil producing industry; applicable in development of deposits with producing formations nonuniform in permeability. SUBSTANCE: the formation is drilled-in, and fluid is recovered through a well cluster. Installed on the surface of cluster wells are fibrosis sources. Prior to vibroseismic stimulation, microseismic background of the producing formation is measured and its spectral analysis is performed. Then, vibroseismic stimulation is effected with varied frequencies to determine the predominant frequencies with simultaneous step reduction of formation pressure with step ΔP due to change of injection rate of displacing agent and recovery of formation fluid in each cycle of stimulation. The first cycle of vibroseismic stimulation is carried out with the initial value of formation pressure Each next cycle is effected after reduction of formation pressure by ΔP. Values of reduction of formation pressure are determined which provide for maximum response to vibroseismic stimulation at predominant frequency. Then, additional vibroseismic stimulation is carried out at the found reduced pressure. Further on, formation pressure is restored to the value ensuring optimal conditions of formation development, and additional vibroseismic stimulation of formation is repeated. EFFECT: higher efficiency.