Tractor communication/control and select fire perforating...

Tractor for remote movement and pressurization of a rock drill

Tractor with improved valve system

Trailer mounted coiled tubing rig

Trailer mounted high floor drilling mast and substructure...

Trailer mounted power swivel

Tranformer thermal and electrical energy supply for...

Transducer assemblies for subsurface logging use

Transfer arm positioning system

Transfer of finely ground weight material

Transfer of production fluid from a well

Transition layer polycrystalline diamond bearing

Transmission of data in boreholes

Transmission sleeve for a down hole hammer

Transmitting laser beam tube drilling apparatus with...

Transport and supply frame for bop assembly

Transportable pumping unit and method of fracturing formations

Transportable well service platform

Transporting mobility control agents to high permeability zones

Travelling centralizer arrangement in a rock drill