Pumping system comprising a high-capacity positive-displacement pump
US5562433A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 16, 1994 |
| Grant date | Oct 8, 1996 |
| Priority date | — |
| Expiry date | Dec 16, 2014 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16N15/00
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The present invention relates to a system for pumping an effluent produced by a geologic formation at the bottom of a well, comprising a pump located in the well and rods connecting the pump to the surface. The pump includes at least a stator and a rotor. The rods are rotated by surface means driving the rotor into rotation to pump the fluid and to drive the fluid towards the surface through an annular pipe external to the rods. The system includes a mechanism for holding the rotor in the stator and for transmitting the rotation of the rods to the rotor. The pump includes means suited for allowing injection, from discharge area (26), of at least part of the effluent produced into the mechanism so as to ensure the lubrication thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.