DEVICE FOR HYDRO-IMPULSE EFFECT ON FACE-ADJACENT AREA OF BED Russian patent published in 2004 - IPC

FIELD: oil and gas extractive industry.

SUBSTANCE: device has tubing column and sucker-rod well pump. Sucker-rod well pump should have productiveness reserve and may be changeable. Sucker valve of sucker-rod well pump is a cylinder connected to sucker-rod well pump cylinder, plunger with spherical valve mounted on cylinder, and piston connected by rod to lower portion of plunger. Cylinder, plunger, rod and piston are made with possible opening of passage to spherical valve for filling sucker-rod well pump cylinder in process of sucking in well liquid. Piston has compacting collar, which is selected for interaction with inner surface of operation column or in case of bushing present in device, with inner surface of bushing. Device may be provided with branch pipe, which is connected to anchor foot of sucker-rod well pump fixing by upper end and envelopes the cylinder. Bushing is fixed to lower portion of branch pipe by collar. In wall of branch pipe apertures are made for free flow of well liquid into inner hollow of branch pipe. Collar has longitudinal localizing ribs along outer surface for interaction with inner surface of operation column. In one of variants rod is enveloped by bushing connected to lower portion of cylinder, which is made in form of iron ring. Compressing spring is placed in iron ring. Bushing has draining apertures and outer longitudinal localizing ribs. For forming pressure impulses energy of weight of well liquid column raised by sucker-rod well pump is used.

EFFECT: higher efficiency.

11 cl, 3 dwg