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
Method and apparatus for continuously separating lost circulatin
Method and apparatus for controlling a well during drilling oper
Method and apparatus for controlling azimuthal drift of a drill
Method and apparatus for core-sampling subsurface rock formation
Method and apparatus for coring rock
Method and apparatus for coring with an in situ core barrel spon
Method and apparatus for directional actuation
Method and apparatus for directional boring