Cleaning and doping of tubulars

Cleaning and lubricating device for threads, especially for...

Cleaning compositions for oil and gas wells, lines, casings,...

Cleaning contaminated materials

Cleaning device

Cleaning methods

Cleaning of cuttings from drilling operations

Cleaning of drill cuttings and apparatus therefor

Cleanout procedure for well with low bottom hole pressure

Clip for joining steel ribs used as tunnel liner supports

Closeable open cell foam for downhole use

Closed device for treatment of drilling fluids and cuttings

Closed flushing and vapor elimination system for wireline...

Closed loop chemical injection and monitoring system for...

Closed loop control bore hole drilling system

Closed loop control system for controlling production of...

Closed loop control system for diamond core drilling

Closed loop drilling assembly with electronics outside a...

Closed loop drilling system

Closed loop fluid-handling system for use during drilling of...