FIELD: mining industry, particularly to develop and rework production wells to stimulate borehole fluid inflow.
SUBSTANCE: method involves inserting weight connected to resilient suspension means into pipe string filled with fluid; exciting borehole fluid oscillations due to axial weight movement. The weight serves as a piston and comprises valves to permit fluid flow in both directions. The valve may be opened under predetermined pressure upon differential pressure draw-down on well bottom zone when weight moves upward and differential pressure increase when weight moves downward during pumping unit operation. Above differential pressure change actions is combined with natural weight vibration.
EFFECT: provision of vibratory and wave well bottom zone treatment within wide frequency range.
1 dwg
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