Centrifugal pumps; petroleum industry power-operated equipment for drilling fluid processing and solids control, including shakers; power operated pressure control equipment for use in drilling oil, including chokes and degassers for extracting gas from fluid during oil production and dual mud gas separators for horizontal drilling being components of manifolds; gas extraction devices, including degasser of gas and extractors of liquid for use in extracting gases from drilling fluids

Ignition systems comprised of a gas supply tube with a nozzle and an electrical igniter to create a flame at the nozzle for oil and gas drilling and production operations, including for igniting waste gases being discharged from a well; mud gas separators, including separators for the cleaning and purification of drilling mud; pressure control equipment, including chokes and degassers for separating gas from fluid during oil production; power operated pressure control equipment for use in drilling oil, including chokes, and degassers for extracting gas from fluid during oil production and dual mud gas separators for horizontal drilling