Oil-well installation fitted with a bottom-well electric pump
US5620048A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 29, 1995 |
| Grant date | Apr 15, 1997 |
| Priority date | — |
| Expiry date | Sep 29, 2015 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B47/06
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Oil-well installation extending from the surface (14) to an oil-bearing rock stratum (16) comprising a tubing (20), arranged in the well and forming a flow channel to the surface for hydrocarbons originating from the oil-bearing rock stratum, a casing (18) delimiting the wall of the well, and a seal (24) arranged at the well bottom between the tubing (20) and the casing (18) so as to form a chamber (26) isolated from the hydrocarbons, the installation furthermore comprising, in the well, a pump (30, 48) and an electric motor (34, 46) which is intended to actuate the pump. According to the invention, the stator (40, 52) of the electric motor (34, 46) is arranged outside the tubing (20) and isolated thereby from the hydrocarbons flowing inside the tubing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.