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Patent Searching and Data


Title:
DOWNHOLE SCREW MOTOR
Document Type and Number:
WIPO Patent Application WO/1986/006443
Kind Code:
A1
Abstract:
A downhole screw motor comprises a casing (1) containing inside it working organs consisting of two elements: an external one which is made as a bushing (2) with inner spiral teeth (2'), and an internal one which is made as a shaft (3) provided with external spiral teeth (3'). The teeth (2') and (3') of the bushing (2) and the shaft (3) are in the permanent meshing. The bushing (2) is connected to an output shaft (4) mounted in the casing (1) in axial bearings (5). The spiral shaft (3) is mounted in the casing (1) with the possibility of its radial displacements and with the prevention of its rotation about its own axis. Radial supports (10) are provided between the casing (1) and the bushing (2) within the area of location of its spiral teeth (2').

Inventors:
Baldenko
Dmitry, Fedorovich Gusman
Moisei, Timofeevich Mutovkin
Nikolai, Fedorovich Semenets
Valery, Igorievich
Application Number:
PCT/SU1985/000035
Publication Date:
November 06, 1986
Filing Date:
April 26, 1985
Export Citation:
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Assignee:
Vsesojuzny, Nauchno-issledovatelsky Institut Burovoi Tekhniki Baldenko
Dmitry, Fedorovich Gusman
Moisei, Timofeevich Mutovkin
Nikolai, Fedorovich Semenets
Valery, Igorievich
International Classes:
B21H5/02; B23Q1/00; B23Q1/01; E21B4/02; F04C2/107; (IPC1-7): F03C5/02; E21B4/14
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