REGULATOR OF TWIST ANGLE WITH DEVICE FOR CONTROL OVER POSITION OF CURVATURE PLANE OF GEROTOR MOTOR Russian patent published in 2009 - IPC E21B4/02 E21B7/08 

FIELD: mining.

SUBSTANCE: regulator consists of curved shaft with external slits, of coupling with end teeth, of upper and curved adaptors, not coaxial to each other, also coupling is installed on slits of curved shaft, while upper and curved adaptors are connected with curved shaft by means of threads cut on faced to each other edges. Axes of threads made on curved sections of the curved shaft and the curved adaptors cross at one point on the central axis of the curved shaft having one curvature plane. The regulator contains an intermediary shaft with connecting threads and external slits, a fixture with tooth notches on the end, the said fixture is installed on the external slits of the intermediary shaft, and a connecting adaptor with tooth notches on the upper end interacting with the tooth notches of the fixture. By means of threads the intermediary shaft is tied with the lower end of the curved adaptor and to the upper end of the connecting adaptor. The connecting adaptor is installed on the intermediary shaft, is designed to circumferential set off relative to the fixture and by means of thread it is tied with the upper end of the stator of the gerotor motor.

EFFECT: increased accuracy and stability of boring inclined wells and increased rate of drift angle build-up of well borehole, reduced resistance to gerotor motor advancing in well borehole, reduced bending stresses in rigid assembly of technological equipment in process of boring curved section of inclined well, increased reliability of twist angle regulator.

3 cl, 2 dwg