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INVERSION OF NMR ECHO TRAINS USING A SUPPLEMENTARY NONLINEAR EQUALITY CONSTRAINT
INVERSION OF NMR ECHO TRAINS USING A SUPPLEMENTARY NONLINEAR EQUALITY CONSTRAINT
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机译:使用补充非线性等式约束反演NMR回声
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摘要
A method of estimating properties of a resource bearing formation includes receiving, by a processor, a measured echo train generated by a nuclear magnetic resonance (NMR) measurement device deployed in a region of interest, and a measured noise of the measured echo train, and calculating a T2 distribution subject to a nonlinear equality constraint, the nonlinear equality constraint dependent on the measured noise and a fitting error between the measured echo train and a modeled echo train. Calculating the T2 distribution includes estimating a solution for the T2 distribution that is closest to satisfying the nonlinear equality constraint.
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