Electrical submersible pump seal section reduced leakage features
US11603854B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 28, 2020 |
| Grant date | Mar 14, 2023 |
| Priority date | — |
| Expiry date | Dec 16, 2040 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2250/51
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A submersible pump assembly includes a pump, a motor, and a seal section connected between. A shaft passage in the seal section has an outboard end that is open to the pump intake and an inboard end that is in fluid communication with motor lubricant in the motor. A drive shaft extends axially within the shaft passage. An outboard bearing at the outboard end of the shaft passage receives the shaft to provide radial support. An inboard bearing at the inboard end of the shaft passage receives the shaft to provide radial support. A shaft seal in the shaft passage receives and seals around the shaft. The shaft seal is located between the outboard bearing and the inboard bearing and seals motor lubricant in the shaft passage from well fluid in the shaft passage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.