Drilling motor with bypass and method
US11149497B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 23, 2017 |
| Grant date | Oct 19, 2021 |
| Priority date | — |
| Expiry date | Jun 2, 2038 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04C15/06
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A downhole drilling motor includes a motor housing having an inner bore and an outer surface. A power section includes a stator elastomer at least partially disposed within the inner bore of the motor housing. A bearing section includes an upper bearing at least partially disposed within the inner bore of the motor housing. The motor housing further includes an opening extending from the inner bore to the outer surface to provide a bypass fluid path for a fluid in the inner bore. The opening is disposed on the motor housing between a lower end of the stator elastomer and an upper end of the upper bearing. The bypass fluid path allows the downhole drilling motor to accommodate a higher flow rate of a fluid through the stator elastomer of the power section than through the upper bearing of the bearing section.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.