Patent ID: 7759942

Claim:
A well logging instrument, comprising: an electrically conductive sonde mandrel, the mandrel having a wall thickness of at most about 0.35 inches; at least one electrical sensor affixed to an exterior of the mandrel, the at least one sensor configured to be affixed to the mandrel by sliding along an exterior surface thereof; and a pressure-sealing electrical feedthrough bulkhead making electrical connection from the at least one sensor through a wall of the mandrel, wherein the at least one electrical sensor is selected from one of an antenna, a toroidal antenna and an electrode, and comprises an electrically conductive element disposed on an insulating substrate, the conductive element and the substrate configured to engage the mandrel by sliding over an exterior surface thereof, and further comprising a shield engaged with the at least one sensor on an exterior surface of the mandrel, the shield including at least one feature to maintain a longitudinal position thereof along the mandrel, wherein the shield is made from electrically conductive material and includes at least one opening for movement therethrough of electromagnetic radiation.