Mapping tool for tracking and/or guiding an underground...

Mapping tool for tracking and/or guiding an underground...

Mapping tool for tracking and/or guiding an underground...

Means and method for facilitating measurements while coring

Means and method for facilitating measurements while coring

Means for detecting subterranean formations and monitoring...

Measurement ahead of the drilling bit by analysis of...

Measurement while drilling apparatus and method of using the...

Measurement-while-drilling devices with pad mounted sensors

Measuring drillstem loading and behavior

Measuring the weight on a drill bit during drilling...

Method and a machine of obtaining samples from the ground to det

Method and apparatus and program storage device adapted for...

Method and apparatus and program storage device adapted for...

Method and apparatus for a downhole NMR MWD tool configuration

Method and apparatus for a monodiameter wellbore,...

Method and apparatus for adjusting the position of stabilizer bl

Method and apparatus for axial alignment of a mud...

Method and apparatus for collecting drill bit performance data

Method and apparatus for collecting drill bit performance data