WHIPSTOCK WITH REGULATED ANGLE OF CURVATURE FOR DIRECTED DRILLING OF HOLES Russian patent published in 1998 - IPC

FIELD: oil and gas production industry. SUBSTANCE: this is intended for use in directed drilling of oil and gas wells. Whipstock has two curved adapters and threaded coupling which connects them. Ends of curved adapter facing each other are provided with end teeth which create toothed connection. Couping is connected with upper curved adapter by means of taper thread, and it is connected with lower adapter by means of cylindrical thread. These two threads have opposite directions of spiral. Axis of curved threads of upper and lower adapters are crossing with axis of coupling threads at single point. Whipstock ensures high reliability and safety and improved control of directed drilling process. EFFECT: high efficiency. 2 cl, 1 dwg