Oil and gas well drilling equipment, namely, managed pressure drilling and underbalanced drilling machines, and machine parts in the nature of chokes and choke systems, fluid manifolds, valves, control panels, low meters, rotating control devices, rotating flow diverters, rotating heads, rotating flanges, nitrogen membrane systems, generators, and latching systems that are part of a rotating control device; oil and gas well drilling equipment, namely, drilling machine parts in the nature of circulation systems, namely, fluid pumps, drill string floats, flow control manifolds, fluid storage tanks, fluid metering equipment, process piping, and control panels; oil and gas well drilling equipment, namely, drilling machine parts in the nature of continuous circulation systems, namely, fluid pumps, drill string floats, flow control manifolds, fluid storage tanks, fluid metering equipment, process piping, control panels, drill string directional flow valves, and side entry connection and housing; oil and gas well drilling equipment, namely, drilling machine parts in the nature of downhole isolation valves, drill pipes, drill bits, and separation tanks; oil and gas well drilling equipment, namely, drilling machine parts in the nature of measurement while drilling systems, namely, measurement while drilling sensors, transmitters, and receivers, marine diverter systems, marine control systems, and marine riser systems

Oil and gas well drilling services, namely, managed pressure drilling and underbalanced drilling