Oil and gas well drilling equipment, namely, managed pressure drilling and underbalanced drilling machines and machine component parts being parts of the machines, in the nature of chokes and drilling manifold choke systems comprised of pipe, manifolds, valves, chokes, flowmeters, and sensors, fluid manifolds, valves, control panels for controlling the choke in managed pressure drilling, flow meters being a component part of the drilling machines, rotating control devices being a component part of the drilling machines, rotating flow diverters, rotating heads, and rotating flanges that are all component parts of a rotating control machine; oil and gas well drilling equipment being parts of drilling machines in the nature of circulation systems comprised of fluid pumps, flow control manifolds, fluid metering equipment being a component part of drilling machines, and process piping being a component part of drilling machines; oil and gas well drilling equipment, namely, drilling machine parts in the nature of continuous circulation systems comprised of fluid pumps, flow control manifolds, fluid metering equipment being a component part of drilling machines, process piping being a component part of drilling machines, drill string directional flow valves, and side entry connection and housing; oil and gas well drilling equipment being parts of drilling machines in the nature of downhole isolation valves, and drilling mud separation tanks; oil and gas well drilling equipment being parts of drilling machines in the nature of measuring while drilling systems comprised of sensors, transmitters, and receivers

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