Variable diameter stator and rotor for progressing cavity motor
US9869126B2 · kind B2 · utility
6Cited by
4References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 7, 2015 |
| Grant date | Jan 16, 2018 |
| Priority date | — |
| Expiry date | Nov 30, 2035 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04C2250/30
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A mud motor for use in a wellbore may include a stator and rotor. The tolerance between the stator and rotor may be varied along the length of the mud motor to, for example, reduce wear of the stator at predetermined locations. The tolerance may range from an interference fit to a clearance fit. The tolerance may vary multiple times across the length of the mud motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.