136600 ⎘
Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member Moineau-type
COMPENSATION FOR ROTOR TILT IN HYBRID PDM STATORS
#2DOWNHOLE FLUID MOTOR AND ASSOCIATED METHODS
#3ROTOR TILT COMPENSATION IN PDM STATORS
#4High modulus liners in PDM stators with diameter reliefs compensating for rotor tilt
#5Positive displacement motor stators with diameter reliefs compensating for rotor tilt
#6Tapered stators in positive displacement motors remediating effects of rotor tilt
#7Semi-rigid stator
#8Progressing cavity device with cutter disks
#9Stator and uniaxial eccentric screw pump
#10Stator assembly for a progressive cavity pump or a progressive cavity motor as well as method for manufacturing and repairing the same
#11Stator and rotor profile for improved power section performance and reliability
#12Mud motor inverse power section
#13PDM performance simulation and testing
#14Progressive cavity motor dampening system
#15PDM performance testing device
#16Hydraulic tools including removable coatings, drilling systems, and methods of making and using hydraulic tools
#17Artificial lifting system with a progressive cavity pump driven by a progressive cavity motor for hydrocarbon extraction
#18Stator for an eccentric screw pump
#19Progressive cavity pump/motor stator including framework elements and grooves defining chambers
#20Progressive cavity based control system
#21PROGRESSING CAVITY PUMP/MOTOR
#22Nitrogen- and ceramic-surface-treated components for downhole motors and related methods
#23Long reach spindle drive systems and method
#24CONTROL MECHANISM
#25Downhole motor with diamond-like carbon coating on stator and/or rotor and method of making said downhole motor
#26Progressing cavity pump/motor
#27Long reach spindle drive systems and method