Stall simulator for PDM performance testing device
US10837874B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 19, 2019 |
| Grant date | Nov 17, 2020 |
| Priority date | — |
| Expiry date | Aug 19, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M99/002
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method for evaluating load performance of a rotor/stator test coupon tested within a sealable test chamber containing test fluid. The test coupon preferably includes at least a partial length of a PDM stage. Alternatively, the test coupon may include a splined rotor/stator. The method includes rotating either the rotor section or the stator section in order to actuate corresponding rotation of the other of the rotor section and the stator section. Non-linear torque in the form of an acceleration torque and/or a braking torque may be applied to either the rotor section or the stator section. Downhole stall conditions may be simulated by selectively engaging and disengaging a second motor and flywheel to vary rotational torque applied to the test coupon. Load performance of the test coupon may be evaluated over time in such simulated stall conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.