Piezoelectric mud pulser for measurement-while-drilling applications
US5197041A · kind A · utility
7Cited by
4References
7Claims
0Family size
Inventor
Key dates
| Filing date | Jan 23, 1991 |
| Grant date | Mar 23, 1993 |
| Priority date | — |
| Expiry date | Jan 23, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N30/2041
Abstract
A mud pulser for measurement-while-drilling applications is disclosed which employs piezoelectric transducers to provide for variations in the mud flow through a mud pulser sleeve. The piezoelectric transducers used in the mud pulser are comprised of two piezoelectric elements bonded together in a bender bar transducer configuration, thin metallic sheets to improve the rigidity of the transducer and to protect the ceramic material and electrodes from the effects of abrasive drilling fluid, and simplified mounting means.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.