Oil and gas drilling, production, processing and transportation system components of metal, namely, wellheads, tubing heads, casing heads, tubing hangers, casing hangers, plugs, tree caps, manifolds, risers and landing strings; manually operated metal flow control valves and parts thereof; chokes of metal for regulating fluid pressures in oil and gas drilling, production and processing systems; metal pipes, tubulars, flowlines, pipelines, and well casings used to stabilize the wellbore in oil and gas wells; flexible pipes comprising primarily metal parts; metal pipe couplings, connectors, unions and fittings; metal pipe swivel joints; guide frames of metal for oil and gas drilling, production, processing and transportation system components; metal seals and gaskets for connections between oil and gas drilling, production, processing and transportation system components of metal

Parts of machines for oil and gas drilling, production, processing and transportation, namely, christmas trees for oil or natural gas extraction, wellheads, tubing heads, casing heads, tubing hangers, manifolds and risers; riserless and riser-based well access systems composed of risers, tension frames, slick joints, telescopic joints, stress joints, tension joints, surface flow trees, circulation heads, lubricator valves, retainer valves, lubricators, upper lubricator packages, lower lubricator packages, lubricator tubulars, pressure control heads, well control packages, lower circulation modules, chemical injection units, subsea test trees, landing strings, landing string accumulator modules, running tools, emergency disconnect packages, workover control modules, hydraulic power units, hydraulic distribution units, control panels, umbilicals and umbilical reels, for oil and gas drilling, production, processing and transportation systems; landing strings being parts of machines; power operated tools, namely, electrically, hydraulically and electro-hydraulically operated running tools for use in deploying and operating oil and gas drilling, production and processing system components, override jacks, linear actuation override tools, subsea control module override tools, and torque tools, all for the installation, maintenance, workover and intervention of oil and gas wells and oil and gas drilling, production, processing and transportation system components; pumps machines for oil and gas drilling, production, processing and transportation; power operated pneumatic, electric and hydraulic valve actuators; parts of machines for oil and gas drilling, production, processing and transportation systems, namely, flow control valves, chokes, and choke manifolds; parts of machines, namely, power actuated connectors and couplings for oil and gas drilling, production, processing and transportation system components; hydraulic, pneumatic and electro-hydraulic controls for operating oil and gas drilling, production, processing and transportation system components; hydraulic power units; electro-hydraulic power units; separation equipment, namely, cyclone separators, gravity separators, settling tanks, horizontal separators, vertical separators, inline separators, deliquidizers, degassers, phase splitters, demisters, coalescers, desanders, dewaterers, hydrocyclones and flotation units, for separating oil, gas, water and/or solids from well fluids; heat exchangers being parts of machines; hydraulic accumulators being parts of machines; seal assemblies being parts of machines; swivel joints being parts of machines; fluid loading arms being parts of machines

Fluid flow meters; fluid pressure meters; densitometers not for medical use; viscosity meters for measuring the viscosity of fluids; multiphase meters for measuring individual fluid phases; fluid flow totalizers; fluid flow analyzers; fluid flow controllers; control valves for regulating fluid flow; controlled volume pumps; downloadable and recorded computer software for the automation of oil and gas drilling, production, processing and transportation systems; electrical controls for oil and gas drilling, production, processing and transportation systems; monitoring systems comprised of computer hardware, downloadable and recorded software, meters and sensors for monitoring oil and gas wells and oil and gas drilling, production, processing and transportation system components; flow computers; pressure relief valves for controlling fluid pressures in oil and gas drilling, production, processing and transportation systems; pressure regulating valves for regulating fluid pressures in oil and gas drilling, production, processing and transportation systems; fluid metering devices in the nature of fluid flow meters; oil well christmas trees in the nature of an assembly of valves, spools, and fittings for controlling the flow of oil or gas from a well; workover control systems comprised of control panels, control stations, control modules, umbilicals, umbilical reel systems, hydraulic power units, hydraulic distributions units and sensors, for use in controlling and operating oil and gas drilling, production and processing system components; umbilicals, namely, assemblies of electrical and hydraulic power cables, data transmission cables and flexible fluid conduits for oil and gas drilling production, processing and transportation systems

Seawater treatment equipment, namely, cartridge filtration units, reverse osmosis units, chlorinator units and deoxygenation units; water treatment equipment, namely, flotation units for separation of hydrocarbons and solids from produced water

Installation, maintenance, repair and remanufacture of equipment and systems for oil and gas drilling, production, processing and transportation; consulting services, namely, technical consulting services concerning the installation, maintenance, repair and remanufacture of equipment and systems for oil and gas drilling, production, processing and transportation

Manufacturing to the order and specification of others of equipment and systems for oil and gas drilling, production, processing and transportation

Engineering of integrated production systems for oil and gas wells; engineering of equipment and systems for oil and gas drilling, production, processing and transportation; design, inspection and testing of equipment and systems for oil and gas drilling, production, processing and transportation; services of engineers, namely, mechanical, civil, electrical, chemical and petroleum engineering services; research and development of equipment and systems for oil and gas drilling, production, processing and transportation; technical research in the fields of engineering, design, construction, project management and process technologies; technical consulting services in relation to testing, calibration, reading and data analysis of petroleum metering systems; engineering services in relation to petroleum metering systems; subsea civil engineering; consulting services, namely, technical consulting services in the field of subsea engineering