Electricity: measuring and testing – Particle precession resonance – Using well logging device
Reexamination Certificate
2005-06-07
2005-06-07
Shrivastav, Brij (Department: 2859)
Electricity: measuring and testing
Particle precession resonance
Using well logging device
Reexamination Certificate
active
06903547
ABSTRACT:
An method and system are disclosed for NMR echo-train data acquisition and processing for enhanced vertical resolution for a given signal to noise ratio. In one aspect, the method is based on providing an estimate of non-formation signal components and removing the estimate from the NMR signals. Computation of the estimate is done from the data itself or using a direct measurement of non-formation signals. In another aspect, the functions of reducing coherent noise components is separated from the function of reducing the random noise components, to enhance the resolution of the NMR pulse echo data for a given signal to noise ratio (SNR) of the data. Combination processing is disclosed, which enables efficient filtering of the input NMR data for both relatively high and relatively low SNR of the formation data.
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Akkurt Ridvan
Bouton John C.
Cherry Ron
Day Peter Ian
Galford James Elmer
Day Jones
Fetzner Tiffany A.
Halliburton Energy Service,s Inc.
Shrivastav Brij
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