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NMR T2 DISTRIBUTION FROM SIMULTANEOUS T1 AND T2 INVERSIONS FOR GEOLOGIC APPLICATIONS
NMR T2 DISTRIBUTION FROM SIMULTANEOUS T1 AND T2 INVERSIONS FOR GEOLOGIC APPLICATIONS
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机译:同时进行T1和T2反演的NMR T2分布在地质上的应用
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摘要
A method for estimating a property of a subsurface material includes conveying a carrier through a borehole penetrating the subsurface material and performing an NMR measurement in a volume of interest in the subsurface material using an NMR tool having an antenna disposed at the carrier. The method further includes receiving with the antenna a short build-up signal due to a short magnetization build-up time of the NMR measurement, an echo-train signal with short polarization time due to the NMR measurement, and an echo-train signal with long polarization time due to the NMR measurement. The method further includes inverting, simultaneously, the short build-up signal, the short-polarization-time echo-train signal, and the long-polarization-time echo-train signal using a processor to estimate the property; and transmitting a signal comprising the property to a signal receiving device.
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