Method and device for adjusting the path of a drilling tool fixed to the end of a set of rods
US4848488A · kind A · utility
22Cited by
6References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 25, 1988 |
| Grant date | Jul 18, 1989 |
| Priority date | — |
| Expiry date | Mar 25, 2008 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B17/1014
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The set of rods comprises at least two stabilizers (5,6) spaced apart along the length of the set of rods (1) and each comprising a body (10), at least one bearing plate (9) and means (21, 23) for actuating the bearing plate (9). The actuating means (21, 23, 21', 23') of each of the stabilizers (5, 6) are controlled independently so as to place the bearing plates (9) of the stabilizers (5, 6) in given positions constituting a combination of positions of extraction of the bearing plates (9) ensuring a desired adjustment of the direction of the set of rods (1).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.