DEVICE FOR INTERMITTENT ACTION ON FLUID IN WELL - COAL BED SYSTEM Russian patent published in 2019 - IPC E21F7/00 

FIELD: mining.

SUBSTANCE: proposed invention relates to mining industry and can be used for degassing of coal beds in order to increase safety of work in mines, as well as for extraction of methane from coal beds with subsequent use thereof in industry. Disclosed is a device for pulsating action on fluid in a well-formation system, comprising a bearing platform with an electric motor, a reduction gear, pipeline for fluid supply with one-way valve and high-pressure pump, cylindrical coupling, adapter flange, faceplate with sealing rings with piston rod passing through it, having hydraulic piston with rubberized round-out collars at its end. Piston rod at the end is equipped with a rotating roller. Movement is transferred from reduction gear shaft to piston rod by eccentric in the form of truncated cone, wherein shaft on which eccentric is located, and reduction gear shaft are connected by means of spline connection with possibility of displacement in longitudinal direction relative to each other, wherein eccentric shaft and reduction gear shaft are coaxially fixed on rigidly interconnected supports installed so that axis of rotation of eccentric and axis of movement of piston rod cross at right angle, and eccentric is in contact with roller at end of piston rod.

EFFECT: proposed device design allows to implement and maintain optimal parameters of pulsating action on liquid in well-layer system after its hydraulic disintegration.

1 cl, 1 dwg