HELICAL FACE MOTOR Russian patent published in 2001 - IPC

Abstract RU 2166053 C1

FIELD: mining industry, civil engineering, construction of boreholes. SUBSTANCE: invention can find use in sinking oil and gas wells. Upper part of motor carries by-pass pipe with hole whose axis is displaced in radial direction relative to axis of stator. Upper face of eccentric rotor has at least one protrusion shifted with reference to axis of rotor. EFFECT: enhanced efficiency of drilling thanks to formation of dynamic (pulsating) axial load by rotor that is transferred to rock-breaking tool. 3 cl, 5 dwg

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RU 2 166 053 C1

Authors

Kochnev A.M.

Dates

2001-04-27—Published

1999-08-02—Filed