OILWELL DRILLING SERVICES-NAMELY, TECHNICAL ADVICE ON DRILLING MUDS AND DRILLING MUD USE; ADVICE ON DATA CONTROL, PRODUCTS CONTROL AND PRESSURE CONTROL; AND ENGINEERING SERVICES IN CONNECTION WITH THE SELECTION AND USE OF SPECIALIZED EQUIPMENT FOR OILWELL DRILLING OPERATIONS

SERVICES IN CONNECTION WITH OIL WELL DRILLING OPERATIONS INCLUDING TECHNICAL ADVICE ON DRILLING MUDS AND DRILLING MUD USE; ADVICE ON DATA CONTROL, PRODUCTS CONTROL, AND PRESSURE CONTROL; AND ENGINEERING SERVICES IN CONNECTION WITH THE SELECTION AND USE OF SPECIALIZED EQUIPMENT FOR OIL WELL DRILLING OPERATIONS

ADDITIVE FOR DRILLING FLUIDS IN OIL AND GAS WELLS

Ground Barytes