Apparatus and method for forming a pilot hole in a formation

Apparatus and method for forming an enlarged underground arcuate

Apparatus and method for forming an enlarged underground arcuate

Apparatus and method for geological drilling and coring

Apparatus and method for horizontal drilling

Apparatus and method for hydraulic drilling

Apparatus and method for improving multilateral well...

Apparatus and method for installing a conduit within an arcuate

Apparatus and method for installing open-ended tubular members a

Apparatus and method for minimizing wear and wear related...

Apparatus and method for modified horizontal directional...

Apparatus and method for modified horizontal directional...

Apparatus and method for positioning extended lateral...

Apparatus and method for pressure-compensated telemetry and...

Apparatus and method for recirculating mud when drilling under a

Apparatus and method for removing and recovering oil and/or othe

Apparatus and method for rotating a portion of a drill string

Apparatus and method for simultaneous drilling and casing...

Apparatus and method for taking soil samples

Apparatus and method for vibrating a drill bit