Downhole turbine assembly
US10280717B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 9, 2014 |
| Grant date | May 7, 2019 |
| Priority date | — |
| Expiry date | Apr 9, 2036 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B41/0085
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A downhole turbine assembly includes a stator housing having one or more stator blades positioned within the stator housing and extending radially inward therefrom. A rotor shaft having a first end and a second end is rotatably positioned within the stator housing and has a first portion exhibiting a first diameter and a second portion exhibiting a second diameter greater than the first diameter. One or more rotor blades are secured to the second portion for rotation with the rotor shaft, and a first bearing assembly is positioned at the first end and a second bearing assembly is positioned at the second end. At least one of the bearing housings provides a primary flow path and a secondary flow path, and one or more radial bearings and one or more thrust bearings are arranged in the secondary flow path.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.