Pulsed Neutron Log
A pulsed neutron log uses induced gamma ray spectroscopy with a pulsed neutron generator. The elemental yields are derived from two intermediate results: the inelastic and the capture spectrum. The pulsed neutron log can indicate the oil saturation, but is affected by the formation water salinity, and the reservoir's lithology, porosity and clay content. The depth of investigation of the log is several inches into the formation. It can be run in open or cased hole.
