Apparatus for measuring the relative position of a downhole tool

Apparatus for producing geophysical measurements in a borehole

Apparatus for rotating a transducer assembly of a borehole loggi

Apparatus for rotating a transducer assembly of a borehole loggi

Assessing a solids deposit in an oilfield pipe

Attenuation mapping apparatus, systems, and methods

Automated mud slowness estimation

Automatic gain control of digitized full trace acoustic signal i

Automatic liquid level recording device

Autonomous depth control for wellbore equipment

Block and module for seismic sources and sensors

Borehole acoustic logging system having synchronization

Borehole apparatus and methods for measuring formation velocitie

Borehole fluid replacement means and method

Borehole logging method for determining the damping of acoustic

Borehole logging method for fracture detection and evaluation

Borehole logging methods for detection and imaging of formation

Borehole logging tool

Borehole sonic data processing method

Borehole sonic method for porosity characterization