Gravity measuring apparatus
US6612171B1 · kind B1 · utility
34Cited by
5References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 1, 2000 |
| Grant date | Sep 2, 2003 |
| Priority date | — |
| Expiry date | Dec 31, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V7/16
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A gravity measuring apparatus is provided comprising a gravitational force detector including a test mass and which produces measurements related to gravitational force exerted on the test mass, characterized in that the gravitational force detector is adapted for use downhole and includes a compensator to compensate for errors in measurements made whilst downhole. The compensator may comprise a guide rail along which the gravitational force detector is moveable over a calibrated distance. Where the test mass is biased toward an equilibrium position about which measurements are made.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.