HYDRAULICALLY OPERATED WELL BORING MACHINE Russian patent published in 2010 - IPC E21B3/02 

FIELD: oil and gas production.

SUBSTANCE: machine includes actuator screws advancing the tool and installed on the frame in bearings, boring head with spindle rotating the tool and located in the above head on bearings, leadscrew nuts enveloping the screws and connected to the head body, screw column and column pick-up clamping device. Actuator screws serve as cylindrical guides with wear-resistant external surface made with required purity and accuracy of diametre size with sleeves - slide bearings located on them and connected to boring head body, and on spindle there fixed is gear wheel engaged with drive gear put on hydraulic motor shaft. Actuation of actuator screws is directly performed with hydraulic motors.

EFFECT: simplifying the design, decreasing overall dimensions and mass of machine, which allows its being used as attached equipment on tunneling machine intended for boring relief wells on emission hazardous coal beds.

1 dwg