Apparatus for establishing branch wells at a node of a...

Apparatus for generating a shock wave in a well hole

Apparatus for monitoring a parameter in a well

Apparatus for monitoring a parameter in a well

Apparatus for mounting an electronic device for use in...

Apparatus for operating wireline tools in wellbores

Apparatus for passing electrical current through an underground

Apparatus for positioning a working implement in a borehole

Apparatus for protecting electrical connection from moisture in

Apparatus for remote control of wellbore fluid flow

Apparatus for selectively coupling cables to well tools

Apparatus for testing earth formations

Apparatus for transporting measuring and/or logging equipment in

Apparatus to increase oil well flow

Articulated downhole electrical isolation joint

Blowout preventer control apparatus

Bore hole safety valves

Borehole discontinuities for enhanced power generation

Borehole pressure gauge

Borehole sounding device with sealed depth and water level...