Inventors:
Paul M. Nelson - Houston TX
Assignee:
Wilson Industries, Inc. - Houston TX
International Classification:
E21B 1700, E21B 4700
Abstract:
A sleeve for supporting a radially inwardly extending key disposed within the interior of a drilling sub is characterized by a substantially cylindrical body member having a plurality of ribs extending either radially inwardly or radially outwardly therefrom to define a plurality of fluid conducting channels. A plurality of threads is provided on the radially outer surface of the sleeve adjacent the first axial end thereof. A radially extending notch divides the threads into a first and second set of threads. With the first and second set of threads engaged with a plurality of threads disposed on the interior of the sub, a threaded bolt is disposed in an axially extending bore provided within the sleeve, to thereby lock the sleeve in position within the sub.