Downhole oil field equipment, namely packers, bridge plugs, zone isolators, and flow regulators used in oil and gas wells

Computer programs that simulate the drilling of oil, gas, geothermal and other wells, for training and optimizing their design

chemicals, namely drilling and completion fluids and dry materials used to formulate drilling and completion fluids

ANTIBACTERIAL AGENT FOR VETERINARY USE

oil and gas well downhole survey and measurement equipment, namely, at bit azimuthal gamma measurement tool and continuous inclination tool used in wellbore drilling, geosteering, and image-while-drilling