On the design of NMR sensor for well-logging applications.

On the design of NMR sensor for well-logging applications.

The magnetic fields of antenna and magnet used in inside-out nuclear magnetic resonance (NMR) well-logging tool are computed using a finite-element method (FEM). A typical operating frequency of such tools is 2 MHz, at which the skin depth is about 47 μm for copper conductor. A direct application of...

Täydet tiedot

Bibliografiset tiedot
Julkaisussa:IEEE Transactions on antennas and propagation 48, 9 (2000).
Päätekijä: Goswami, J.C
Aineistotyyppi: Artikkeli
Kieli:English
Aiheet:
2 MHz.
FEM.
NMR sensor.
Antenna.
Antenna efficiency.
Boreholes.
Copper conductor.
Design.
Discretization.
Ferrites.
Field profile.
Finite-element method.
Inside-out nuclear magnetic resonance.
Magnet.
Magnetic fields.
Numerical model.
Oil exploration.
Operating frequency.
Optimal control technique.
Perturbation technique.
Power loss.
Skin depth.
Steel.
Well-logging applications.