Method for establishing high permeability flow path between boreholes
US4106574A · kind A · utility
7Cited by
6References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 7, 1977 |
| Grant date | Aug 15, 1978 |
| Priority date | — |
| Expiry date | Jul 7, 1997 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/247
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method for linking adjacent boreholes in a subterranean formation, particularly in a coal gasification array, by firing a high velocity terradynamic projectile from one borehole to the other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.