Efficient application of reduced variable transformation and...

Elastomer seal structure

Elastomeric seal assembly having auxiliary annular seal...

Electric control system for a demulsifier

Electric drawworks for a drilling rig

Electric drill

Electric field communication for short range data...

Electric induction heating of underground ore deposits

Electric line bailing tool

Electric motors and related systems for deployment in a...

Electric power supplying well head assembly

Electric safety valve actuator

Electric submersible pump and motor assembly

Electric submersible pump service truck

Electric submersible pump, tubing and method for borehole...

Electric submersible pumping system for dewatering gas wells

Electric wireline packer/retriever apparatus

Electrical cable feeding and removing apparatus

Electrical cable reeling apparatus

Electrical conducting system