METHOD OF AND APPARATUS FOR INVERTING THREE-DIMENSIONAL FLUID PROPERTY DISTRIBUTION OVER THE (T1,T2,D)DOMAIN FROM NMR MEASUREMENTS

METHOD OF AND APPARATUS FOR INVERTING THREE-DIMENSIONAL FLUID PROPERTY DISTRIBUTION OVER THE (T1,T2,D)DOMAIN FROM NMR MEASUREMENTS

A method is disclosed of inverting three dimensional fluid property distribution. The method includes comparing a detected NMR signal with a plurality of modeled signal values derived from precomputed values of NMR signal contribution values at prechosen (T1, T2, D) value tuples; identifying one or...

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Hauptverfasser: Anderssen Endre, Chok Hamed
Format: Patent
Sprache:eng
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DETECTING MASSES OR OBJECTS
GEOPHYSICS
GRAVITATIONAL MEASUREMENTS
MEASURING
PHYSICS
TESTING
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creator Anderssen Endre
Chok Hamed
description A method is disclosed of inverting three dimensional fluid property distribution. The method includes comparing a detected NMR signal with a plurality of modeled signal values derived from precomputed values of NMR signal contribution values at prechosen (T1, T2, D) value tuples; identifying one or more modeled signals satisfying domain constraints and in respect of which an objective function involving a respective detected NMR signal and a modeled signal is optimised; selecting one or more of the solutions resulting in optimised objective; and using each selected optimized solution to characterize the one or more properties of fluid in the formation. The method also includes processing the resulting solutions as e.g. graphical or tabular data. Also disclosed is apparatus for performing the method.
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subjects DETECTING MASSES OR OBJECTS
GEOPHYSICS
GRAVITATIONAL MEASUREMENTS
MEASURING
PHYSICS
TESTING
title METHOD OF AND APPARATUS FOR INVERTING THREE-DIMENSIONAL FLUID PROPERTY DISTRIBUTION OVER THE (T1,T2,D)DOMAIN FROM NMR MEASUREMENTS
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