Acoustic sensing system for downhole seismic applications...

Acoustic telemetry systems and methods with surface noise...

Acoustic telemetry transceiver

Acoustic telemetry transceiver

Acoustic well logging system having multiplexed filter digitizin

Actuation method

Adaptive acoustic transmitter controller apparatus and method

Adaptive telemetry system for hostile environment well logging

Adjacent well electromagnetic telemetry system and method for us

Adjustable shear valve mud pulser and controls therefor

Adjustable shear valve mud pulser and controls therefor

Advanced digital telemetry system for monocable transmission fea

Analysis and identification of a drilling fluid column based on

Annulus pressure operated well monitoring

Apparatus and method for determining boring direction when borin

Apparatus and method for determining the position and orientatio

Apparatus and method for down-hole EM telemetry while drilling

Apparatus and method for downhole well equipment and process...

Apparatus and method for downhole well equipment and process...

Apparatus and method for logging wells while drilling