WEIGHTING MATERIAL (BARYTE/BARIUM SULFATE) USED IN FLUIDS FOR DRILLING OIL AND GAS WELLS

CHEMICALS AND CHEMICAL COMPOSITION FOR USE IN WELL-DRILLING FLUIDS AND DRILLING OPERATIONS

CHEMICALS AND CHEMICAL COMPOSITIONS FOR USE IN WELL-DRILLING FLUIDS AND DRILLING OPERATIONS

WELL-LOGGING SERVICE, AND THE RENTAL OF WELL-LOGGING EQUIPMENT

CLAYS, METALLIC AND NON-METALLIC MINERALS, MIXED COMPOSITIONS OF MINERAL AND PLANT ORIGIN, CRUDE LIGNITE, CRUDE TANNINS, SHREDDED CELLOPHANE, STARCH, COMMINUTED NUTSHELLS, GROUND BAGASSE, AND THE LIKE, ADAPTED FOR USE IN AND IN CONNECTION WITH THE COMPOUNDING AND TREATMENT OF OIL WELL DRILLING FLUIDS AND LIKE MIXTURES CONTAINING CLAY OR OTHER MINERALS

CHEMICALS AND CHEMICAL COMPOSITIONS ADAPTED FOR USE IN AND IN CONNECTION WITH THE TREATING AND TESTING OF OIL WELL DRILLING FLUIDS AND LIKE MIXTURES CONTAINING CLAY OR OTHER MINERALS

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

HOUSE ORGANS, TECHNICAL BULLETINS, BROCHURES, AND PERIODICALS

BARYTES (BARIUM SULPHATE) ADAPTED PARTICULARLY IN THE MAKING OF A MUD-LADEN FLUID FOR OIL WELLS

integrated package of drilling services for the oil and gas well drilling industry

Chemicals and chemical compositions for use in well drilling fluids and drilling operations