Vsesojuzny Nauchnoissledovatelsky Institut Burovoi Tekhniki

Other

Veesojuzny Ordena Trudovogo Krasnogo Znameni Naucho-Issle

Valery I Semenets

Dmitry F Baldenko

Moisei T Gusman

Jury V Vadetsky

Anatoly M Kochnev

Samuil S Nikomarov

Nikolai P Bezlepkin

Vladimir B Goldobin

Jury K Tolsky

Jury V Zakharov

Valerian P Shumilov

Jury F Potapov

Yury V Vadetsky

Valentina A Khabetskaya

Leonid A Kondratenko

Downhole screw motor

Screw machine having a plurality of symmetrically arranged rotors

Downhole sectional screw motor, mounting fixture thereof and method of

A helical down-hole machine comprises a plurality of sections, each such section having a helical rotor and a helical stator arranged with a preselected eccentricity to form cavities of variable volume for the passage of fluid therethrough and positioned axially in series. The identical elements of these sections, rotors or stators, are rigidly interconnected. The rigid connection of at least one of these identical elements of said sections is detachable by frictionally jointing a projection provided at the end of one such element and a recess provided at the end of the adjacent element to be secured against relative angular and axial displacements in the process of rotation.

Multistage helical down-hole machine with frictional coupling of working

Hinge joint for a screw planetary hydraulic drill

A bottom hole motor for driving a rock-breaking tool comprises a motor unit kinematically coupled with a spindle unit. The spindle unit has a housing inside which extends a shaft connected with the rock-breaking tool and mounted in the housing with the aid of radial bearings and rings and races, said rings and races arranged coaxial with the shaft and designed to retain rolling bodies located between the rings, races and the shaft. The shaft has toroidal grooves which are in immediate contact with rolling bodies. This invention can be used for drilling and repair of oil, gas and exploratory wells.

Bottom hole motor for driving rock-breaking tool

Valve means

Growing community of inventors

Moscow, Russia

Valery I Semenets