WELL LIQUID OSCILLATION EXCITING METHOD Russian patent published in 2005 - IPC

FIELD: mining industry, particularly to rework production well, namely to stimulate reservoir fluid inflow.

SUBSTANCE: method involves arranging hammer connected to suspension means inside pipe string filled with liquid; exciting periodical oscillations by axial hammer movement, wherein hammer movement speed is chosen to provide necessary force of hammer impact upon pipe string walls; installing sucker-rod pump in the well; connecting sucker-rod pump plunger with hammer arranged below it through resilient suspension means; exciting periodical liquid oscillations by transfer of sucker-rod pump plunger movement energy to the hammer. Hammer mass and resilient suspension means rigidity is selected to provide hammer movement amplitude and speed higher than that of the plunger.

EFFECT: possibility of wave treatment of well bottom zone during well operation without well suspending.

1 dwg