Electrically stimulated well production system with flexible tubing conductor
US4662437A · kind A · utility
249Cited by
6References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 14, 1985 |
| Grant date | May 5, 1987 |
| Priority date | — |
| Expiry date | Nov 14, 2005 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/2401
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Electrical resistance heating of subterranean viscous fluid deposits is provided by a wellbore having a conductive casing section and a coupling disposed in proximity to the formation. An elongated, flexible fluid injection or withdrawal tube extends into the wellbore, is secured to the coupling, and is connected to a source of electrical energy. The tube is preferably of composite construction having an inner steel core, an outer copper layer and a reinforced plastic corrosion resistant coating over the copper layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.