Methods and apparatus for estimating values for formation parameters such as permeability, relative permeability, and skin factors for a plurality of locations in the formation are provided. Fluid is forced into a capped borehole at a measured rate, and a borehole logging tool is run in the borehole...http://www.google.de/patents/US6061634?utm_source=gb-gplus-sharePatent US6061634 - Method and apparatus for characterizing earth formation properties through joint pressure-resistivity inversion