Method and apparatus for communicating signals from within an en

Method and apparatus for determining position in a pipe

Method and apparatus for determining position in a pipe

Method and apparatus for downhole signal communication and...

Method and apparatus for locating faults in wired drill pipe

Method and apparatus for LWD shear velocity measurement

Method and apparatus for LWD shear velocity measurement

Method and apparatus for LWD shear velocity measurement

Method and apparatus for mud pulse telemetry in underbalanced dr

Method and apparatus for performing diagnostics on a...

Method and apparatus for relaying downhole data to the surface

Method and apparatus for remote signal entry into measurement wh

Method and apparatus for stabilizing a communication sensor in a

Method and apparatus for transmitting and receiving data to...

Method and apparatus for transmitting information between a...

Method and apparatus for transmitting information between equipm

Method and apparatus for transmitting information relating to th

Method and apparatus for transmitting information to the...

Method and apparatus for using a data telemetry system over...

Method and apparatus for using a data telemetry system over...