Services relating to selection and to utilisation of types, compositions, and quantities of drilling fluids (muds), of completion fluids and cements, and of workover fluids and cements, and of additives to all the aforesaid fluids, muds and cements, all for use in boreholes and in oil, gas, water and geothermal wells; borehole fluid testing and analysis services; and providing data relating to borehole fluid testing and analysis

Minerals and chemicals for well drilling and foundry operations,

Chemical compositions adapted particularly for the making of a mud-laden fluid for well drilling operations,

Hydrometers, densitometers, viscometers, balances, filter testers, sand content testers, pH testers, alkalimeters, ion testers, pressure testers, mud testers, titration apparatus, and like testing equipment especially adapted for testing oil well drilling mud, oil well cores, oil well cuttings, clay and mineral suspensions and compositions and the like,

Chemicals and chemical compositions including such goods for use in well drilling fluids and drilling operations