NMR apparatus and method for stochastic pulsing of earth...

Electricity: measuring and testing – Particle precession resonance – Using well logging device

Reexamination Certificate

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Reexamination Certificate

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07015694

ABSTRACT:
Stochastic pulsing using random or pseudo-random sequences is used for determination of nuclear spin properties of earth formations. This reduces the power requirements. Processing of the received signals may include linear or nonlinear cross-correlation with the excitation pulse sequence. Inversion of the results of the processing gives the desired nuclear spin property.

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