Time dependent neutron-gamma spectroscopy

摘要

An apparatus and method for estimating at least one parameter of interest of an earth formation including an estimation of the parameter of interest using a time- dependent ratio of information obtained from at least one neutron detector through the exposure of the earth formation to a radiation source, particularly a pulsed nuclear source. The apparatus includes a processor and storage subsystem with a program that, when executed, implements the method. Also, an apparatus and method for estimating at least one parameter of interest of an earth formation including an estimation of the parameter of interest using a first component and a second component of an information set obtained using a single radiation detector.