Proppant pumps for the fracking industry, namely, for pumping sand, chemicals, and ceramics

Oil and gas well equipment, namely, ball screw valves in the nature of linear actuators and hydraulically operated valves, all for use as parts of machines

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, flow 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 ...

Oil and gas well fracturing services; [oil and gas stimulation service, namely, chemical treatments to restore or enhance the performance of wells for others; oil and gas well stimulation service, namely, fracturing and stimulation using a stabilized fluid system;] oil and gas well production services[; oil and gas well perforation services]

well-fracturing preparations, namely, fluids for injection into gas and oil wells to split rock by means of hydraulic pressure

well-fracturing preparations, namely, fluids for injection into gas and oil wells to split rock by means of hydraulic pressure

Non-metal hoses for use in the water transfer industry