Mud motor or progressive cavity pump with varying pitch and taper
US12152587B2 · kind B2 · utility
0Cited by
20References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 14, 2020 |
| Grant date | Nov 26, 2024 |
| Priority date | — |
| Expiry date | Jun 12, 2040 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04C2240/20
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A mud motor includes a rotor and a stator. Drilling fluid received by cavities of the mud motor drives the rotor to rotate within the stator. The rotor includes one or more rotor lobes extending helically and defining a rotor pitch. The stator includes two or more stator lobes extending helically and defining a stator pitch. The rotor and the stator together define a tapered profile of the mud motor that varies proceeding from a top end of the mud motor to a bottom end of the mud motor. At least one of the rotor pitch or the stator pitch vary as proceeding from the top end of the mud motor to the bottom end of the mud motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.