Longitudinal NMR well logging apparatus and method
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 19, 2000
Issued Date -
N/A
app pub date -
Oct 21, 1997
filing date -
Mar 27, 1997
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The invention is a nuclear magnetic resonance sensing apparatus comprising a magnet for inducing a static magnetic field in a region containing materials to be analyzed. The static magnetic field is polarized generally along the axis of the apparatus. The static magnetic field has a predetermined maximum longitudinal and maximum radial amplitude gradient. The apparatus includes a transmitter antenna for generating a radio frequency magnetic field in the region for exciting nuclei of the materials to be analyzed by conducting a radio frequency current through the transmitter antenna. The apparatus includes a receiving antenna for detecting a nuclear magnetic resonance signal from the excited nuclei. In a particular embodiment, the transmitter antenna and receiver antenna consist of coil pairs, each coil in a pair separated from the other by 90 degrees, to generate a circularly polarized RF magnetic field and to perform quadrature detection of the NMR signals.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully