NATIONAL-OILWELL

Description: Pumps and pumping equipment; well drilling equipment; wellhead and well completion equipment; and valves

Description: Pumps and pumping equipment; well drilling equipment; wellhead and well completion equipment; and valves

Description: Pumps and pumping equipment; well drilling equipment; wellhead and well completion equipment; and valves

Description: POWER FLUID CONDITIONING UNIT FOR HYDRAULIC DOWNWELL PUMPS AND COMPONENTS THEREOF

Description: Machines for the production and drilling of oil

Description: Machines for the production and drilling of oil

Description: [ Power-operated pumps and pump equipment for use in oilfield equipment and service; namely, triplex mud pumps, duplex mud pumps, rod pumps, hydraulic reciprocating pumps, hydraulic jet pumps, sucker rods, well service pumps and plunger pumps; ] oilwell drilling machinery and parts therefor; namely, [ drawworks, torque converters, rotaries, ] swivels, traveling blocks, hook blocks, and crown blocks [ drill pipe, tubulars, pedestal cranes, jacking and drilling manifolds; power-operated oil wellhead and well completion equipment; namely, wellheads, slips, casing hangers, tubing hangers, completion risers, drilling risers, production trees, through-bore trees, production manifolds and injection manifolds; valves for use with oil field drilling and production machinery; namely, gate valves, block valves, safety valves, pneumatic actuated valves and hydraulic actuated valves, all made of steel and used in oil wellhead completion equipment; valves for use with oil field drilling and production machinery; namely, ball valves, check valves, throttle valves and diverter valves, all made of steel and used in oilwell fluid control production systems ]; "OILWELL"

Description: [ Power operated pumps and pump equipment for use in oilfield equipment and service; namely, triplex mud pumps, duplex mud pumps, rod pumps, hydraulic reciprocating pumps, hydraulic jet pumps, sucker rods, well service pumps and plunger pumps; ] oilwell drilling machinery and parts therefor; namely, [ drawworks, torque converters, rotaries, ] swivels, traveling blocks, hook blocks, crown blocks [, drill pipe, tubulars, pedestal cranes, jacking and drilling manifolds; power operated oil wellhead and well completion equipment; namely, wellheads, slips, casing hangers, tubing hangers, completion risers, drilling risers, production trees, through-bore trees, production manifolds and injection manifolds; valves; for use with oilfield drilling and production machinery; namely, gate valves, block valves, safety valves, pneumatic actuated valves and hydraulic actuated valves all made of steel and used in oil wellhead completion equipment; valves for use with oilfield drilling and production machinery; namely, ball valves, check valves, throttle valves and diverter valves all made of steel and used in oilwell fluid control production systems ]

Description: Power operated pumps and pump equipment for use in oilfield equipment and service; namely, triplex mud pumps, duplex mud pumps, rod pumps, hydraulic reciprocating pumps, hydraulic jet pumps, sucker rods, well service pumps and plunger pumps; oilwell drilling machinery and parts therefore; namely, drawworks, torque converters, rotaries, swivels, traveling blocks, hook blocks, crown blocks, drill pipe, tubulars, pedestal cranes, jacking and drilling manifolds; power operated oil wellhead and well completion equipment; namely, wellheads, slips, casing hangers, tubing hangers, completion risers, drilling risers, production trees, through-bore trees, production manifolds and injection manifolds; valves for use with oil field drilling and production machinery; namely, gate valves, block valves, safety valves, pneumatic actuated valves and hydraulic actuated valves all made of steel and used in oil wellhead completion equipment; valves for use with oil field drilling and production machinery; namely, ball valves, check valves, throttle valves and diverter valves all made of steel and used in oilwell fluid control production systems; "OILWELL"

Description: Sucker Rods

Description: SLUSH PUMP LINERS, SLUSH PUMP VALVES, SLUSH PUMP RODS AND SLUSH PUMP VALVE SEATS

Description: PACKING-NAMELY, PUMP PACKING, PUMP CYLINDER LINER PACKING, VALVE INSERT PACKING, PACKING ELEMENTS FOR PUMP PISTONS, PISTON ROD PACKING, AND GASKETS

Description: RECIPROCATING AND CENTRIFUGAL PUMPS

Description: [BULL PLUGS, SWAGED NIPPLES, FLOW T'S, CASING HEADS, [TUBING HEADS, AND COMBINATION CASING AND TUBING HEADS ], ALL BEING IN THE NATURE OF FITTINGS FOR PIPES, TUBES, AND CASING]; [ CABLE TOOL WELL DRILLING UNITS, ] CROWN AND TRAVELLING BLOCKS, DRAW WORKS OR HOISTS, DRIVES FOR DRAW WORKS AND PUMPS, [ DRILL COLLARS, DRILL OR GRIEF STEMS, FEED CONTROLS FOR WELL DRILLING, GAS BOOSTER UNITS, ] [INTERNAL COMBUSTION ENGINES,] [ POLISHED ROD JACKETS, PORTABLE DERRICKS, PORTABLE MASTS, (PULL RODS ] , [ PULL ROD CLAMPS) ] ,PUMPS AND PARTS THEREOF, [ (PUMPING JACKS),((PUMPING POWERS)), ] PUMPING UNITS, [ REDUCTION GEARS, ] ROTARY DRILLING UNITS, [ ((STEAM ENGINES)), STUFFING BOXES, ((SUBSTRUCTURES FOR DERRICKS AND DRIVES)), SUCKER RODS, SUCKER ROD COUPLINGS, ] SWIVELS, TRANSMISSIONS, WELL DRILLING ROTARIES [ AND ((WELL PACKERS)) ]

Description: OIL-WELL RIGS, [ OIL-WELL DERRICKS, RIG PARTS, DERRICK PARTS, ] PORTABLE DRILLING-MACHINES, [ PORTABLE WELL-PULLING MACHINES, DRIVE-WELL AND TEST-BORING MACHINES, CORE-DRILLS, ] OUTFITS FOR SINKING WELLS OF LARGE DIAMETER THROUGH SOFT FORMATIONS, [ RIG-IRONS, ] STEEL CROWN-BLOCKS, [ SAND-REELS, STEAM-ENGINES, ] GAS-ENGINES; [ BOILER AND ENGINE FITTINGS--NAMELY, TUBE-EXPANDERS, FLUE-CLEANERS, STEAM-WHISTLES, INSPIRATORS, AND INJECTORS; ] STEAM-PUMPS, [ ROTARY PUMPS, JET-PUMPS, ] SLUSH-PUMPS, [ FORCE-PUMPS, EJECTORS, PITCHER-SPOUT PUMPS, HYDRAULIC RAMS, DRILLING AND FISHING TOOLS FOR CABLE SYSTEMS ] ROTARY WELL-DRILLING TOOLS; [ WELL EQUIPMENT--NAMELY, ELEVATORS, ANCHOR-CLAMPS, AND CASING-HEADS; OIL WELL PACKERS, ] PUMPING MACHINERY AND EQUIPMENT; [ OIL-WELL-PIPE TOOLS--NAMELY, PIPE-BENDERS, PIPE-CUTTERS, PIPE-THREADING MACHINES, STOCKS AND DIES, TONGS, WRENCHES, PIPE-DRILLS, AND PIPE-TAPPING MACHINES; OIL-WELL BLACKSMITH-TOOLS, ] AND PULLEY-BLOCKS