Electrical current flow between tunnels for use in heating subsurface hydrocarbon containing formations
US8172335B2 · kind B2 · utility
57Cited by
970References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 10, 2009 |
| Grant date | May 8, 2012 |
| Priority date | — |
| Expiry date | Apr 1, 2030 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/119
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A system for treating a subsurface hydrocarbon containing formation includes one or more shafts. A first substantially horizontal or inclined tunnel extends from one or more of the shafts. A second substantially horizontal or inclined tunnel extends from one or more of the shafts. Two or more heat source wellbores extend from the first tunnel to the second tunnel. The heat source wellbores are configured to allow electrical current to flow between the heat source wellbores.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.