Apparatus for producing geophysical measurements in a borehole
US4670862A · kind A · utility
17Cited by
6References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 8, 1985 |
| Grant date | Jun 2, 1987 |
| Priority date | — |
| Expiry date | Feb 8, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S367/911
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A measuring tool for producing geophysical measurements within a borehole comprises a crawler belt, at least a portion of which constitutes a support for a transducer. The crawler belt is continuously displaced within the bore hole by means of a suspension cable and guide pulley in cooperating relation with spiked shoes and retaining plates for maintaining at least the transducer-supporting portion of the crawler belt in a stationary position with respect to the borehole wall during each measurement stage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.