Three directional drilling process for environmental remediation of contaminated subsurface formations
US5186256A · kind A · utility
11Cited by
10References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 20, 1991 |
| Grant date | Feb 16, 1993 |
| Priority date | — |
| Expiry date | Jun 20, 2011 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/305
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
The present invention resides in a three directional horizontal drilling process which is suitable for the in-situ treatment or extraction of undesirable contaminants from subsurface formations. A first extraction well is drilled utilizing three directional horizontal drilling techniques in the general vicinity of a contaminated subsurface formation. A second injection well is strategically drilled to direct contaminants into a subsurface screen system in the extraction well, thus facilitating the extraction and collection of undesirable contaminants.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.