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

Translation mechanism for track vehicle

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

Transportation system for a sub-surface activity area

Transporting mobility control agents to high permeability zones

Trapezoidal divider wall for use in shaft construction

Travelling centralizer arrangement in a rock drill

Travelling valve assembly for a fluid pump

Traversable machines

Treating an underground formation