Single well stimulation for the recovery of liquid hydrocarbons from subsurface formations
US4524827A · kind A · utility
387Cited by
24References
32Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 29, 1983 |
| Grant date | Jun 25, 1985 |
| Priority date | — |
| Expiry date | Apr 29, 2003 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/2401
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Water is vaporized in an annular upper region of a subsurface formation into which borehole extends from the surface. This creates a substantially nonconducting dielectric in such region extending outwardly from the borehole. Such vaporization is preferably achieved by the application of electrical power to an electrode disposed in the borehole. Liquid is produced through the borehole from a lower region of the formation to cool the lower region near the borehole and maintain an electrically conductive path between the formation and the electrode in such lower region through which electrical power is applied to the formation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.