Patent ID: 7436185

Claim:
An apparatus for logging a formation traversed by a borehole, comprising: a plurality of logging tools adapted for conveyance inside the borehole, the plurality of logging tools comprising: a tool body; a sensing pad responsive to a density property of the formation coupled to the tool body; a current emitting measure electrode responsive to a lateral resistivity property of the formation incorporated on the sensing pad; a mechanism coupled to the tool body for urging the sensing pad into contact with a side of the borehole coupled to the tool body; and a pair of mass isolation bands disposed about the tool body to isolate a mass of the tool body adjacent the measure electrode and enable the tool body mass to function as a bucking electrode, wherein a first mass isolation band of the pair of mass isolation bands is disposed at a position on the tool body above the sensing pad and a second mass isolation band of the pair of mass isolation bands is disposed at a position on the tool body below the sensing pad.