Bucking coil and B-field measurement system and apparatus for time domain electromagnetic measurements
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United States of America Patent
Stats
-
Jul 22, 2014
Grant Date -
Jun 23, 2011
app pub date -
Aug 28, 2009
filing date -
Aug 29, 2008
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
According to one example embodiment is a time domain electromagnetic (TDEM) geophysical survey system for producing a B-field measurement, comprising: a transmitter coil; a bucking coil positioned in a substantially concentric and coplanar orientation relative to the transmitter coil; a receiver coil positioned in a substantially concentric and coplanar orientation relative to the bucking coil; an electrical current source connected to the transmitter coil and bucking coil for applying a periodic current thereto; and a data collection system configured to receive a magnetic field time-derivative signal dB/dt from the receiver coil and integrate the magnetic field time-derivative signal dB/dt to generate, a magnetic B-field measurement, the transmitter coil, bucking coil and receiver coil being positioned relative to each other such that, at the location of the receiver coil, a magnetic field generated by the bucking coil has a cancelling effect on a primary magnetic field generated by the transmitter coil.
First Claim
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Family
International Classification(s)
- 2009 Application Filing Year
- G01V Class
- 1039 Applications Filed
- 876 Patents Issued To-Date
- 84.32 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- G01V Class
- 0 % this patent is cited more than
- 11 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jan 22, 2026 |
