Apparatus and method for hydraulic drilling
US5363927A · kind A · utility
95Cited by
23References
17Claims
0Family size
Inventor
Key dates
| Filing date | Sep 27, 1993 |
| Grant date | Nov 15, 1994 |
| Priority date | — |
| Expiry date | Sep 27, 2013 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B10/60
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A process and apparatus for high pressure drilling are disclosed. The apparatus comprises an essentially solid drill head with horizontally extendable nozzle arms hingedly connected by shear pins thereto. Flow of high pressure fluid both extends the nozzle arms and flows through the nozzle arms, thereby fracturing and shearing material surrounding the drill head. Cessation of fluid flow returns the arms to the vertical position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.