Valery I. Semenets

Person

Moscow, SU

People

Patents Grantslast 30 patents

Information Patent Grant
Downhole screw motor
- Patent number 4,823,889
- Issue date Apr 25, 1989
- Vsesojuzny Nauchno-Issledovatelsky Institut Burovoi Tekhniki
- Dmitry F. Baldenko
- E21 - EARTH DRILLING MINING
Information Patent Grant
Screw machine having a plurality of symmetrically arranged rotors
- Patent number 4,764,094
- Issue date Aug 16, 1988
- Vsesojuzny Nauchno-Issledovatelsky Institut Burovoi Tekhniki
- Dmitry F. Baldenko
- E21 - EARTH DRILLING MINING
Information Patent Grant
Downhole sectional screw motor, mounting fixture thereof and method...
- Patent number 4,711,006
- Issue date Dec 8, 1987
- Vsesojuzny Nauchnoissledovatelsky Institut Burovoi Tekhniki
- Dmitry F. Baldenko
- E21 - EARTH DRILLING MINING
Information Patent Grant
Multistage helical down-hole machine with frictional coupling of wo...
- Patent number 4,585,401
- Issue date Apr 29, 1986
- Veesojuzny Ordena Trudovogo Krasnogo Znameni Naucho-Issle
- Dmitry F. Baldenko
- E21 - EARTH DRILLING MINING
Information Patent Grant
Hinge joint for a screw planetary hydraulic drill
- Patent number 4,556,398
- Issue date Dec 3, 1985
- Vsesojuzny Nauchnoissledovatelsky Institut Burovoi Tekhniki
- Dmitry F. Baldenko
- E21 - EARTH DRILLING MINING
Information Patent Grant
Bottom hole motor for driving rock-breaking tool
- Patent number 4,518,049
- Issue date May 21, 1985
- Vsesojuzny Nauchno-Issledovatelsky Institut Burovoi Tekhniki
- Dmitry F. Baldenko
- E21 - EARTH DRILLING MINING
Information Patent Grant
Valve means
- Patent number 4,470,464
- Issue date Sep 11, 1984
- Dmitry F. Baldenko
- E21 - EARTH DRILLING MINING

Valery I. Semenets

Person

Patents Grantslast 30 patents

Downhole screw motor

Screw machine having a plurality of symmetrically arranged rotors

Downhole sectional screw motor, mounting fixture thereof and method...

Multistage helical down-hole machine with frictional coupling of wo...

Hinge joint for a screw planetary hydraulic drill

Bottom hole motor for driving rock-breaking tool

Valve means