Continuous shear wave logging apparatus
US4549630A · kind A · utility
21Cited by
11References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 21, 1983 |
| Grant date | Oct 29, 1985 |
| Priority date | — |
| Expiry date | Mar 21, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S181/401
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Apparatus for continuous shear wave logging of a borehole consisting of a sonde instrument having retractable, expandable coupling arms for rigidly engaging the borehole wall to exert repetitive torqueing action while continuously moving uphole. The sonde includes spaced detector coupling arms in continual contact with the borehole wall and polarized for detection of the repetitive propagated shear waves.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.