H

MATERIALS USED IN THE CONSTRUCTION, COMPLETION, TREATING AND SERVICING OF WELLS, SUCH AS OIL, GAS, BRINE AND WATER WELLS-NAMELY, POZZOLANS, FIBROUS, GRANULAR AND LAMELLATED LOST CIRCULATION ADDITIVES SUCH AS WOOD FIBERS, PERLITES, WALNUT SHELLS AND CELLULOSE FILM FLAKES, HEAVYWEIGHT ADDITIVES (NAMELY, ILMENITE ORES AND BARITES), SAND, SILICA FLOUR, RESINS, MONTMORILLONITE CLAYS SUCH AS BENTONITE, OTHER CLAYS, NATURAL GUMS SUCH AS GUAR GUM, PROPPING AGENTS (NAMELY, SAND, WALNUT SHELLS AND RESINS) AND RADIOACTIVE COATED PROPPING AGENTS (NAMELY, SAND AND WALNUT SHELLS COATED WITH A RADIOACTIVE MATERIAL, NAMELY, ZIRCONIUM-NIOBIUM, COBALT, IRRIDIUM AND IRON)

CHEMICALS USED IN THE TREATMENT OF WELLS, SUCH AS OIL, GAS, BRINE, AND WATER WELLS-NAMELY, ACIDS, ACID OR CORROSION INHIBITORS, CEMENT RETARDERS, CEMENT ACCELERATORS, LOW WATER LOSS ADDITIVES, FRICTION REDUCERS, SPECIAL CEMENT ADDITIVES, SURFACE ACTIVE AGENTS, SCALE REMOVAL AND CONTROL AGENTS, PARAFFIN INHIBITING AND CONTROL ADDITIVES, NATURAL AND SYNTHETIC RESINS, CATALYSTS FOR RESINS AND RESIN DILUENTS, SODIUM SILICATE, TEMPORARY BRIDGING AGENTS, MUD CLEANOUT AND REMOVAL AGENTS, FOAMING AGENTS, GELLING AGENTS, ADDITIVES FOR FRACTURING SOLUTIONS, ALKALIES, SALTS, SEQUESTERING AGENTS, EMULSIFIERS AND FILLERS

[MATERIALS USED IN THE CONSTRUCTION,COMPLETION, TREATING AND SERVICING OF WELLS, SUCH AS OIL, GAS, BRINE AND WATER WELLS-NAMELY, PORTLAND CEMENT]

[PROPPING AGENTS-NAMELY, ALUMINUM PELLETS]

PAINTS-NAMELY, PAINTS FOR PROTECTIVELY AND DECORATIVELY COATING METAL, WOOD, AND OTHER SURFACES

CEMENTING EQUIPMENT AND TOOLS-NAMELY, MOBILE CEMENTING UNITS, SKID CEMENTING UNITS, JET-TYPE MIXERS, PLUG CONTAINERS, CEMENTING PLUGS, PLUG VALVES, SAND SCREENS, BRIDGE PLUGS, STEEL LINERS, WELL PACKERS, SUB ASSEMBLIES, CIRCULATING VALVES, TUBING TESTERS, SETTING TOOLS, MULTIPLE STAGE CEMENTERS, CEMENTING COLLARS, WELL BORE WALL CLEANERS, SWIVELS, CLAMPS, PACKER SHOES, PACKER SETTING DEVICES, BAFFLES, CENTRALIZERS, TUBING SPACERS, CEMENT BASKETS, GUIDE SHOES, FLOAT SHOES, FLOAT VALVES, FLOAT COLLARS, BULK CEMENTING PNEUMATIC EQUIPMENT, PNEUMATIC HANDLING AND CONVEYING EQUIPMENT, BASKETS FOR PARAFFIN CONTROL MATERIALS, THERMAL UNITS, FRACTURING UNITS, FRACTURING HEADS, HYDRA-JET TOOLS, TUBING ANCHOR SWIVELS, HYDRA-JET CLEANOUT TOOLS, COLLAR LOCATORS, FRACTURING PACKERS, STRADDLE PACKERS, FRACTURING CROSS-OVER TOOLS, AUXILIARY VALVES, ANCHOR CATCHERS, TUBING HOLDDOWNS, DUMP BAILER UNITS, BRIDGING BASKETS, FORMATION TESTING TOOLS, HIGH PRESSURE CONTROL HEADS AND MANIFOLDS, REVERSING SUBS, PRESSURE EQUALIZERS, HYDRAULIC JARS, SAFETY JOINTS, FORMATION SAMPLING TOOLS, AND HYDRAULIC JETTING EQUIPMENT

MEASURING DEVICES FOR DETERMINING DEPTHS IN BORE HOLES, PRESSURE RECORDING DEVICES, DENSITY METERS, FLOW METERS, FRACOMETERS, TEMPERATURE RECORDERS, CEMENT CONSISTOMETERS, PRESSURE-TEMPERATURE THICKENING TIME TESTERS, FLOW ANALYZERS, AND DENSITROLLERS FOR CONTROL OF SLURRY DENSITY

PROPPING AGENTS-NAMELY, GLASS BEADS