Robust logging-while-drilling sonic transmitters with improved strength and bandwidth
US11578592B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 25, 2020 |
| Grant date | Feb 14, 2023 |
| Priority date | — |
| Expiry date | Apr 27, 2041 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/01
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The disclosure provides an acoustic logging device comprising a first tubular member comprising a plurality of grooves disposed on an exterior of the first tubular member. The acoustic logging device further comprises a ring transmitter module disposed around an exterior of the first tubular member, which comprises a piezoelectric (PZT) ring transmitter, a transmitter sleeve, wherein the PZT ring transmitter is disposed within the transmitter sleeve, and a cage, wherein the transmitter sleeve is disposed between the cage and the exterior of the first tubular member, wherein the transmitter sleeve is disposed over the plurality of grooves. The acoustic logging device further comprises a plurality of dual bender transmitters, wherein there is a gap disposed the plurality of dual bender transmitters in the exterior of the first tubular member, wherein there is an array of holes connecting each of the gaps together and providing fluid communication between the gaps.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.