7 Oil and gas production machinery, apparatus being parts, equipment, systems or other apparatus or oil and gas well machinery, namely, drilling and workover systems comprising drilling derrick, workover risers, substructures, risers and riser systems, namely, production risers, drilling risers, service/workover risers and riser connectors and riser handling power tools, winches, windlasses, chain stoppers for use in equipping and building sea-going vessels and oil and gas drilling rigs; oil and gas well machinery, apparatus being parts, equipment, systems or other apparatus or oil and gas well machinery, namely, wellheads, subsea pumping, compression and processing systems comprising separation, crude oil conditioning, water treatment and/or injection, pumping/compression, and heat exchange mass transfer devices for use in subsea extraction, processing and exporting of oil and natural gas; oil and gas well machinery, apparatus being parts, equipment systems or other apparatus or oil and gas well machinery, namely, wireline, tractor and logging products, comprising wireline tractor devices, for functions such as scale removal, milling/side-tracking, sand-bailing, perforating and plug-setting for use down hole in the extraction, processing and exporting of oil and natural gas; electrical pumps, namely, fluidising pumps for medium consistency pumps, centrifugal pumps, line shaft pumps and multiphase pumps used for crude oil transportation, firefighting and seawater pumping systems, lift pumps, lift caissons, and booster pumps; heaters and heat exchangers being parts of machines, inert gas electric generators for production of liquefied natural gas, natural gas liquids and petroleum products. control modules, namely, pump control valves for products of combustible gases and recovery of chemicals and for the optimization of such processes; oil and gas well drilling machines and parts and fittings therefor; machinery, apparatus, equipment and parts therefor used in the production, refining, transport and storage of petroleum products, namely, oil well pumping machines, well drilling machines, drilling machines and parts therefor, boring machines, core drilling bits, oil separators, electric pumps, centrifugal pumps, multiphase pumps, pump control valves, wellheads, subsea compressors, subsea risers and umbilicals; machinery in the nature of drilling ships, not for use as a vessel, equipped with well drilling machines and oil well pumping machines, tethers and mooring buys for drilling ships or oil tankers, oil and gas drilling rigs and parts and fittings therefor; motors and engines except for land vehicles; drilling rigs, liquid and gas producing installments, namely, subsea/downhole drilling machines, swivels, and machines for purifying, blending and processing, and parts and components for the aforesaid goods, all sold together; fabricated structures used in the production of oil and gas from wells and for the drilling of oil and gas wells, namely, rig structures comprising derricks, drilling masts being parts of machines, drilling rigs, drill floors, power rig jacks, spiders, namely, power machines for use in handling well tubulars, and substructures, namely, foundations for drilling rigs, all for use with drilling rigs, workover rigs used for the repair or stimulation of production wells, off shore and on shore drilling rigs, self-propelled drilling rigs, trailerized drilling rigs, and platform-mounted drilling rigs, operator cabins for use with drilling rigs, machines to remove solids from drilling fluids, and hoisting machinery, namely, cranes and drawworks, namely, machines for reeling out and reeling in the drilling line; oil and gas well drilling machines; oil and gas well pumping machines; mechanized drilling and oilfield instruments and equipment, machinery and machine parts therefor, namely, pipe deck equipment, pipe handling machinery, oil well drilling machinery, top drives, slips, elevators, bushings, clamps, casing spiders, iron roughnecks, rotary tables, and tongs; oil well machine tools and equipment, namely, power slips, manually actuated slips, slip inserts, kelly spinners or power subs, master bushings, casing bushings, safety clamps, and safety valves; pipe hoisting and rotating machines; oilfield machinery in the nature of a pipe racking system comprised of a rotating column and racking arms; power operated well tools and equipment, namely, top drive drilling machines, and parts therefor; pipe handling machines; pipe racking machines; pipe pick-up/lay down machines; oil well machine tools, namely, joint making and breaking tools; oil well machine tools, namely, fingerboards; pressure monitors sold as a component of oil and gas well drilling machines, monitors as machine parts for jack up of vessels; machinery in the nature of hydraulic power units and replacement parts therefor; drilling control centers as machines and as machine parts; oil well machine tools, namely, torque wrenches, pipe spinning wrenches, kelly spinners, mechanical catheads, hydraulic catheads, power tongs; hooks and hook adapters as machine parts; elevators; elevator links; drill collar handling machines; machinery, namely, casing elevators/spiders, power slips, power slip inserts; casing, as machine parts; kellys, and kelly bushings, as machine parts; master bushings, kelly wipers, as machine parts; kelly bushing safety guards, as machine parts; slips and slip inserts as machine parts; safety clamps and safety joints as parts for well tools and well machine tools; tong blocks, manual tongs and tong dies, as machine parts for well tools; bumper subs and casing patches, as machine parts; derricks; movable off-shore installations in the nature of oil field equipment, namely, drilling rig mechanization machines and devices and windmill mechanization machines and devices