Turbine drill for drilling at great depths
US4051909A · kind A · utility
10Cited by
5References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 22, 1976 |
| Grant date | Oct 4, 1977 |
| Priority date | — |
| Expiry date | Nov 22, 1996 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B4/02
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A drilling device is disclosed which comprises a tubular drilling lance adapted to being lowered to great depths in the earth's surface and being raised therefrom. Disposed within the drilling lance is an energy generating system which comprises a fluid vaporizing system and a turbine coupled to the vaporizing system by a closed fluid circuit. Coupled to the turbine and extending outwardly from the drilling lance is a drill bit. The drilling device is configured such that vaporized fluid activates the turbine, which in turn, makes the drill bit operable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.