DRILLING UNIT Russian patent published in 2008 - IPC E21B7/02 E21B3/00 E21B15/00 

FIELD: mining.

SUBSTANCE: unit contains foundation (1), tower (2), pivotally connected to foundation (1) and mounted rotatable into working and transport position by means of hydraulic ram (3), carriage (4), mounted with displacement ability lengthwise tower (2). Tower (2) is outfitted by brackets (5), ends of which are pivotally fixed on bearing axle (6), journals of which are located in clamps (8), mounted on rests (9), located on foundation (1), at that brackets (5) are installed with ability of detachable affixment with foundation (1). Facility for inclination change and tower fixing is implemented in the form of telescopiform abutments (10) and levers (11), pivotally connected to each other on axis (12), located in rests (13), and installed on foundation (1). Other ends of telescopiform abutments (10) are pivotally connected to tower (2) on axis (14), and levers (11) by other ends are interlocked solidly with bearing axle (6).

EFFECT: provides stepless control and accuracy rising of tower inclination at inclined well drilling; improvement of productivity; reliability and ease of drilling unit operation.

3 cl, 3 dwg