FIELD: well drilling equipment; applicable in drilling of oil and gas wells. SUBSTANCE: screw hydraulic downhole motor has unit of control of loads exerted on working members and installed on hollow rotor in high-pressure cavity for closing a through axial channel and check valve installed on upper sub located on stator for hydraulic engagement with working members and unit of control of loads exerted on working members. EFFECT: extended technical potentialities of screw hydraulic downhole motor directly at drill site, and increased motor reliability and longevity. 5 cl, 3 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| UNIT TO CONTROL POWER LOAD ONTO WORKING ELEMENTS | 2009 |
|
RU2492306C2 |
| SPINDLE OF DOWNHOLE MOTOR | 2001 |
|
RU2206695C1 |
| VALVE DEVICE FOR BORE ENGINE | 2002 |
|
RU2224866C1 |
| SECTIONALISATION DEVICE OF STATORS OF SCREW DOWNHOLE MOTOR | 2009 |
|
RU2405098C1 |
| VALVE UNIT OF SCREW-TYPE WELL ENGINE | 2006 |
|
RU2330151C1 |
| HINGE DEVICE FOR SCREW DOWNHOLE MOTOR | 2004 |
|
RU2278938C1 |
| HYDROMECHANIC JAR | 2004 |
|
RU2284405C2 |
| SPIRAL WELL ENGINE | 2003 |
|
RU2224079C1 |
| VALVE DEVICE OF DOWNHOLE DRILLING MOTOR | 2007 |
|
RU2348784C2 |
| JOINT OF DOWNHOLE MOTOR | 2001 |
|
RU2206697C1 |
