Patent ID: 7129477

Claim:
A method of logging of an earth formation comprising: (a) conveying a logging tool into a borehole in the earth formation and rotating the tool therein; (b) making a plurality of long spaced (LS) and short spaced (SS) measurements of a parameter of interest of the earth formation using nuclear sensors on the logging tool over a time interval during continuing rotation of the tool; (c) determining a standoff associated with each of said LS and SS measurements; and (d) using an adaptive spine and rib method for determining from said plurality of LS and SS measurements and their associated standoffs, an estimate of the parameter of interest; wherein the adaptive spine and rib method further comprises: (e) defining a plurality of standoff bins, (f) determining a first estimate of density at zero standoff, and (g) representing compensated density of each said standoff bin as a function of said first estimate and the standoffs of said plurality of standoff bins.