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INVERSION OF NMR ECHO TRAINS USING A SUPPLEMENTARY NONLINEAR EQUALITY CONSTRAINT

机译:使用补充非线性等式约束反演NMR回声

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.
机译:一种估计资源承载地层的性质的方法,包括:由处理器接收由部署在感兴趣区域中的核磁共振(NMR)测量设备生成的测量回波列,以及测量回波列的测量噪声,以及计算受非线性等式约束约束的T 2 分布,该非线性等式约束条件取决于测得的噪声以及测得的回波串与建模回波串之间的拟合误差。计算T 2 分布包括估计最接近满足非线性等式约束的T 2 分布的解决方案。

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