Electrical submersible pump
US8287235B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 30, 2007 |
| Grant date | Oct 16, 2012 |
| Priority date | — |
| Expiry date | Feb 7, 2031 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2300/2263
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The invention relates to high-speed electrical submersible pumps used for hydrocarbons production from oil wells with high concentration of solids. The technical result such as a longer service life is achieved with the technical design, wherein the pump comprises: a housing with a head and a base, a compression nut, a shaft installed on a journal bearing, stages of impellers and spacers installed on the shaft, set of diffusers installed on the housing, wherein the diffusers and impellers are manufactured from a ceramic material. The preferable design has metal spacers between the diffusers, wherein the length of the diffuser spacer between the contact surfaces equals the distance between the impeller spacers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.