Device to attach a receiver system to the wall of a well

Device to gauge the position and the speed of a drill

Device whereby a duct in a deep bore hole is supported and...

Device which is expandable to engage the interior of a tube

Device, method and program product to automatically detect...

Device, system and method for drilling and completing a...

Devices and methods for dynamic boring procedure...

Devices and methods for formation testing by measuring...

Devices and methods for perforating a wellbore

Devices and methods for power control in horizontal...

Devices and systems for measurement of position of drilling...

Devices for drilling branched wells

Devices for imparting rotary motion

Devices for physiological fluid sampling and methods of...

Devices, systems and methods relating to down hole operations

Dewatering of silicate wellbore fluids

Dewaxing apparatus for oil well

Diameter based tracking for window milling system

Diameter expanding groove cutting device and...

Diamond bit steel body cutter pocket protection