ADJUSTER OF ANGLE AND REACTIVE MOMENT OF GEROTOR MOTOR Russian patent published in 2002 - IPC

FIELD: drilling of inclined holes. SUBSTANCE: invention refers to adjusters of angle and reactive moment of gerotor motor in bent string of drill pipes. Adjuster of angle and reactive moment comprises central hollow member and three hollow tubular non-uniaxial members each housing inner through hole. In this case internal hollow member is placed in center, between first and second members and first and second tubular members are joined to internal hollow member with use of thread. First and second tubular members are connected by thread to body of gerotor motor. Axes of threads on edges of internal hollow member cross its central axis and axes of threads. Largest distance between axes of crossing threads equals double value of eccentricity of rotor with reference to stator of gerotor motor. Largest distance between its central axis and axes of any thread on its edges equals eccentricity of rotor with regard to stator of gerotor motor. EFFECT: raised accuracy of driving holes through discontinuity of face thanks to expanded range of compensation for side effect of drill bit by reactive moment of adjuster and to sustaining of optimal axial load on drill bit by keeping present values of axial load without loss of stability of string of drill pipes. 9 dwg