Drilling muds for use in oil and gas well drilling, namely, a barrier fluid used in managed pressure drilling applications

Power-operated downhole tools, namely, a multi-sealing rotating control device with bearings and sealing elements used to direct and control fluid flow and pressure in oil and gas well drilling operations

Oil and gas well services, namely, use of computer programs and downhole tools for measuring, calculating, testing, monitoring, interpreting and controlling downhole pressure, operating parameters, and subsurface earth conditions in borehole drilling operations