M-I SWACO

Chemical drilling fluids for use in subterranean wells, namely, drilling muds, completion fluids, workover fluids and wellbore fluids; chemical additives for use with drilling fluids; drilling muds and chemical drilling fluids for use in oil well drilling

Petroleum industry power-operated equipment for drilling fluid processing and solids control, namely, shakers, desanders, desilters, mud cleaners, centrifuges and fluids processing units, and pressure control equipment, namely, chokes, degassers, and centrifuges; power operated pressure control equipment for use in drilling oil, namely, chokes, degassers, centrifugal degassers, hydrogen sulfide mud gas separators, dual mud gas separators for horizontal drilling

Petroleum industry equipment, namely, rig instrumentation for monitoring well pressure and volume of returned drilling fluid; micro-processor controlled rig-floor monitors which monitor and display various drilling functions with alarms; electronic pit volume totalizers and return flow sensors for use in blow-out prevention or monitoring of drilling fluid pressure, temperature, viscosity, and composition; drilling recorders, namely, micro-processor controlled drilling mud logging equipment for use in logging drilling fluid pressure, temperature, viscosity and composition

Subterranean well drilling services

Subterranean well testing services for use in connection with subterranean well drilling operations; engineering services in connection with the selection and use of specialized equipment for subterranean well drilling operations and providing technical advice on drilling fluids and drilling fluid use and technical advice on data control, products control, and pressure control