Machine for boring a large diameter blind hole

Magnetorheological fluid apparatus, especially adapted for...

Maintenance and extraction of poles

Manhole cutter

Means and method of drilling wells

Measurement while drilling tool with interconnect assembly

Mechanically actuated whipstock assembly

Medium curvature directional drilling method

Membrane forming in-situ polymerization for water based...

Method and a device for deep hole drilling

Method and an apparatus for taking and analyzing level determine

Method and an arrangement for controlling the supply of air into

Method and apparatus for a drill cutting injection system

Method and apparatus for a monodiameter wellbore,...

Method and apparatus for a monodiameter wellbore,...

Method and apparatus for a monodiameter wellbore,...

Method and apparatus for balancing discharge fluid flow in drill

Method and apparatus for cementing drill strings in place for on

Method and apparatus for collecting, defluidizing and...

Method and apparatus for continuous pilot hole coring