Decoupled borehole sensor
US5044461A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 10, 1991 |
| Grant date | Sep 3, 1991 |
| Priority date | — |
| Expiry date | Jan 10, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S367/911
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A sensor module having tri-axial spatial sensitivity is mounted in a closed compartment of an acoustic logging tool. The sensor module is resiliently mounted with three degrees of freedom with respect to the body of the tool. The compartment includes a volume of damping fluid to suppress parasitic vibrations transmitted to the sensor module from the tool body. In the inactive condition, a contact shoe, associated with the sensor module, projects through a window in the closed compartment. In the operating configuration, the sensor module and its contact shoe are caused to retract into the compartment against a compressive force when the logging tool is pressed against the wall of a borehole.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.