Correction of motion influences in NMR signals

Details Correction of motion influences in NMR signals Correction of motion influences in NMR signals

2007-09-11

2007-09-11

Arana, Louis M. (Department: 2859)

Electricity: measuring and testing

Particle precession resonance

Using well logging device

C324S306000

Reexamination Certificate

active

10958608

ABSTRACT:
An apparatus and method for compensating for the effect of tool motion in NMR MWD measurements. Signals obtained from a directionally sensitive receiver are compensated for the effects of tool motion. In an alternative embodiment, directional transmitters and receivers are used, with the pulsing of the transmitter controlled by the output of motion sensors. In another embodiment, the transmitters and receivers may be axisymmetric and the received signals are corrected using results of a NMR simulation program that takes account of the recorded motion of the apparatus.

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