Well stimulation process and apparatus
US5323855A · kind A · utility
Inventor
Key dates
| Filing date | Feb 17, 1993 |
| Grant date | Jun 28, 1994 |
| Priority date | — |
| Expiry date | Feb 17, 2013 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/2401
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An apparatus to extract electromagnetically susceptible fluids and electromagnetically susceptible particles from a subterranean well having a shaft or tube extending from the surface to a fluid-containing formation and a mechanism to deliver the fluids and particles to the surface from the fluid-containing formation. The apparatus includes at least one electromagnetical coil within the shaft or tube. A direct current is supplied to the electromagnetic coil to generate a electromagnetic field in the fluid-containing formation. The magnetically susceptible fluids and particles are attracted toward the shaft tube through use of the electromagnetic field.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.