| 摘要 |
FIELD: oil and gas industry. ^ SUBSTANCE: method involves withdrawal of oil through production wells, pumping of working agent through injection wells, installation of tubing string in production wells with bottom-hole oil pump and shank on rock in sump, arrangement of pump at maximum depth in antinode of the well set to one of higher harmonics - modes of free vibrations of the system, setting of the pumping period, installation of the pump plunger travel, operation of pump and withdrawal of oil from the well with simultaneous dilatation-wave action on productive formations. Periods of modes of free vibrations of the liquid column open from the mouth in the well and periods of free vibrations of the tubing string pressed on both ends are determined, modes of free vibrations of liquid and tubing string, which are the closest as to the value of periods, are chosen, and the depth of submersion of the pump is adjusted as to level equal to the half of the maximum of antinode of offsets, which is determined by analytical formula ^ EFFECT: increasing oil recovery owing to increased intensity of wave field and efficiency of the action. ^ 1 ex, 1 dwg |
