In one aspect an induction resistivity tool incorporated into a downhole tool string comprises an outer wall of a downhole component comprising an outer diameter and at least one induction transmitter assembly disposed along the outer diameter. The at least one transmitter assembly comprises at least...http://www.google.com/patents/US7982463?utm_source=gb-gplus-sharePatent US7982463 - Externally guided and directed field induction resistivity tool
