Real-time NMR distribution while drilling

Details Real-time NMR distribution while drilling Real-time NMR distribution while drilling

2011-08-23

2011-08-23

Shrivastav, Brij B. (Department: 2858)

Electricity: measuring and testing

Particle precession resonance

Using well logging device

C324S306000, C324S314000

Reexamination Certificate

active

08004279

ABSTRACT:
NMR spin echo signals are acquired downhole. Principal Component Analysis is used to represent the signals by a weighted combination of the principal components and these weights are telemetered to the surface. At the surface, the NMR spin echo signals are recovered and inverted to give formation properties. Real-time displays may be used for determining formation properties and for altering the acquisition parameters.

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