Method and apparatus for measurement of azimuth of a borehole while drilling
US4894923A · kind A · utility
38Cited by
5References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 27, 1987 |
| Grant date | Jan 23, 1990 |
| Priority date | — |
| Expiry date | May 27, 2007 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/022
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method and apparatus is presented for measuring the azimuth angle of a borehole being drilled, the data for determining the azimuth angle being obtained while the drillstring is rotating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.