Paula J Turner

US Patent:

20080265892, Oct 30, 2008

Filed:

Mar 4, 2008

Appl. No.:

12/041754

Inventors:

Harold L. Snyder - Rockwall TX, US
Paula Turner - Pleasant Grove UT, US

International Classification:

G01V 3/28

US Classification:

324339

Abstract:

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 one induction transmitter coil wound about at least one core. The at least one transmitter coil is adapted to project an induction signal outward from the outer wall when the at least one transmitter coil is carrying an electrical current. The transmitter assembly is adapted to create electromagnetic fields that originate the induction signal from outside the outer wall and substantially prevent the signal from entering the outer wall.