Electrode well for electrically heating a subterranean formation
US4084639A · kind A · utility
Assignees
Inventor
Key dates
| Filing date | Dec 16, 1976 |
| Grant date | Apr 18, 1978 |
| Priority date | — |
| Expiry date | Dec 16, 1996 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/2401
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An improved electrode for electrically heating a subterranean formation includes a plurality of electrically conductive rod-like members that extend outwardly from a central well bore to provide increased area for conducting electrical current from a source into said subterranean formation. The improved electrode apparatus is adapted to be lowered into a well bore which has been drilled into the subterranean formation and, thereafter, the plurality of rod-like members are driven outwardly from the central well bore. Guide means are provided to direct the rod-like members outwardly into the subterranean formation as a central member is forced downwardly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.