RU2203380C1
|
|
Screw positive-displacement motor with turbine activator
|
RU2186189C1
|
|
Articulated device of screw gyration hydraulic machine (versions)
|
RU2195544C1
|
|
Device for producing hydraulic pressure pulses in well (versions)
|
RU2185488C1
|
|
Screw hydraulic downhole motor
|
RU2187618C1
|
|
Centralizer for pipes of oil and gas wells
|
RU2187616C1
|
|
Method of manufacture of rotor tubular shell of screw downhole motor
|
RU2194880C2
|
|
Multistart gyrator mechanism of screw hydraulic machine
|
RU2200934C2
|
|
Device for measurement of inner diameter of articles with elastomer coats
|
RU2174583C1
|
|
Planetary drill
|
RU2166603C1
|
|
Gerotor mechanism of screw face hydraulic machine
|
RU2166602C1
|
|
Turbo-drill
|
RU2165531C1
|
|
Downhole screw motor geared-rotor mechanism
|
RU2161235C1
|
|
Shock-absorber turbodrill
|
RU2166606C1
|
|
Expander of cutting type
|
RU2180388C2
|
|
Arrangement to cut windows in oil string
|
RU2150572C1
|
|
Plugging composition
|