SELF-PROPELLED DRILLING RIG FOR INCLINED WELL DRILLING Russian patent published in 2008 - IPC E21B7/02 

FIELD: mining, particularly drilling rigs characterized by means for land transport, for instance, skid mounting or wheel mounting.

SUBSTANCE: drilling rig comprises fixed platform 1 installed on vehicle and pivotally connected with support frame 2, which may rotate in vertical plane passing through vehicle axis by means of hydraulic jack 3 mounted in fixed platform. Drilling rig also has rotary slide 5 with slopes made as hydraulic jacks 6 and mast pole 4. Mast pole 4 is mounted so that it may slide along rotary slide 5, which is installed on axis 7 of support frame and may rotate about said axis through not more than 20° from vertical axis in each direction with the use of hydraulic jack 6 secured to support frame 2. Rotary slide 5 comprises mast pole 4 position fixation means, which retains mast pole 4 in predetermined direction, including fixed member secured to support frame 2 and movable member fixedly connected to rotary slide 5.

EFFECT: possibility to drill inclined wells in two mutually transversal planes in confined building side space and in pit ledges along with increased reliability of mast pole fixation in inclined position.

6 cl, 5 dwg