Downhold motor cooling and protection system
US5554897A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 22, 1994 |
| Grant date | Sep 10, 1996 |
| Priority date | — |
| Expiry date | Apr 22, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K5/203
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The motor cooling and protection system has a shroud concentrically disposed about a motor housing of a downhole motor. The shroud is sealed from well fluids in the well and defines and annular chamber between the motor housing and the shroud. A longitudinal annular baffle is located in the chamber and partitions the chamber into two annular and concentric sub-chambers. The two sub-chambers have axially spaced apart communication openings such that the two sub-chambers are in fluid communication with each other. A cooling fluid having high conductive heat transfer rates is located in the chamber for circulating between the two sub-chambers, through the communication openings, to facilitate and enhance the transfer of heat between the motor and the well fluids.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.