GEROTOR HYDRAULIC MOTOR Russian patent published in 2024 - IPC E21B4/02 F01C1/107 

FIELD: gerotor hydraulic motor.

SUBSTANCE: motor 1 contains a 34 azimuth angle adjuster 33, located between the housings 2 and 10 of the motor 1 and the spindle section 9, respectively, including a hollow curved shaft 35 with external longitudinal splines and threads 37 and 38 on its edges 39 and 40, respectively, a straight sub 41 made in one piece with the body 2 and the thread on the edge, a curved sub 43, made in one piece with the body 10 and the thread on the edge, non-coaxially located with each other, fastened to the hollow curved shaft 35 with threads 37 and 38 on the edges 39 and 40 directed towards each other, respectively, a gear coupling 45 with internal longitudinal spline grooves and teeth on the side of the end 48 directed towards the end 49 of the sub 43, installed on the external longitudinal splines of the shaft 35 between the subs 41 and 43, and on the side of the end of the sub 43 directed towards the coupling 45, teeth are made that engage with the teeth of the coupling 45. The shank of the downstream 8 coupling half 20 of the cardan shaft 17, fastened with a thread 21 to the shaft 11 of section 9, is placed inside the inner sleeve of the upstream 8 radial sliding support 14 with the ability to slide along the inner surface of the inner sleeve of the support 14. The outer sleeve of the downstream 8 radial sliding support 15 is fastened with a common thread to the body 2 on the side of the bit 16. The inner sleeve of the support 15 is fastened with a common thread to the shaft 11. The diameter of the outer flange of the inner bushing of the support 15 exceeds the inner diameter of the outer bushing of the support 15. The direction of screwing of the inner sleeve of the support 15 with the shaft 11 coincides with the direction of rotation of the drill string when lifting from the well.

EFFECT: increasing the service life, reliability and accuracy of drilling directional wells, reducing resistance and stress in the bottom of the drill string by reducing the length of the motor.

3 cl, 7 dwg