Borehole fluid replacement means and method
US5541889A · kind A · utility
8Cited by
11References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 31, 1995 |
| Grant date | Jul 30, 1996 |
| Priority date | — |
| Expiry date | Jan 31, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S367/911
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The signal-to-noise ratio of televiewer signals from a rotary sidewall acoustic-beam scanner is improved by replacing the volume of borehole drill fluid that lies in the path of the acoustic beam with a solid medium characterized by a lower coefficient of attenuation than that of the drill fluid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.