Method and apparatus for measuring a parameter within the...

Method and apparatus for measuring fluid density and...

Method and apparatus for measuring formation pressure

Method and apparatus for measuring formation resistivity...

Method and apparatus for measuring return flow in a well

Method and apparatus for measuring the travel speed of a...

Method and apparatus for measuring volumetric water flow...

Method and apparatus for milling openings in downhole...

Method and apparatus for mining minerals, especially coal...

Method and apparatus for mining oil material

Method and apparatus for mining uranium deposits of variable...

Method and apparatus for mitigating environmental impact due...

Method and apparatus for mixing and/or shearing a drilling...

Method and apparatus for mixing gaseous oxidant and...

Method and apparatus for mixing gaseous oxidant and...

Method and apparatus for monitoring gateroad structural change

Method and apparatus for monitoring offshore contamination

Method and apparatus for monitoring operation of percussion...

Method and apparatus for monitoring subterranean gas...

Method and apparatus for monitoring the corrosive effects of...