SCREW HYDRAULIC DOWNHOLE MOTOR Russian patent published in 2002 - IPC

Abstract RU 2185488 C1

FIELD: drilling equipment, particularly, screw hydraulic downhole motors for drilling of oil and gas wells. SUBSTANCE: screw hydraulic downhole motor has an additional radial support installed on coupler in zone below windows for passage of drilling mud for interaction of extreme surface of coupler with internal surface of the additional radial support which is immovably secured in body. EFFECT: higher reliability and prolonged service life of screw hydraulic downhole motor. 3 dwg

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RU 2 185 488 C1

Authors

Shchelkonogov G.A.

Korotaev Ju.A.

Bobrov M.G.

Nikolaev V.Ju.

Trapeznikov S.G.

Dates

2002-07-20—Published

2001-03-27—Filed