Method for improving neutron interpretations in subsurface formations

A system for improving neutron interpretations in a subsurface formation comprising:

• a computing system including at least one processor configured to estimate mineral concentrations and kerogen concentrations at one or more depths in the subsurface formation based at least on a formation characterization obtained by utilizing a neutron log obtained by deploying a neutron tool into a borehole traversing the formation, the at least one processor further configured to determine kerogen properties at the one or more depths in the subsurface formation and to calculate mineral properties at the one or more depths in the subsurface formation by summing a plurality of individual mineral abundances solved by infrared spectroscopy, wherein each of the plurality of individual mineral abundances is multiplied by a respective mineral property, the at least one processor further configured to calculate a neutron-based log response to a rock matrix based upon, at least in part, the kerogen properties and the mineral properties at the one or more depths in the subsurface formation by subtracting a contribution from the rock matrix associated with the kerogen properties and the mineral properties from a total neutron response measured by the neutron tool when obtaining the neutron log, and the at least one processor further configured to generate and deliver an output to a reservoir tool to alter operation of the reservoir tool, wherein the generated output is based at least in part on an interpretation of the neutron-based log response.