Power-operated tools, machines and apparatus for drilling, completing and producing fluids from oil, gas, condensate and water wells, well bores and bore holes, and for intervention in oil, gas, condensate and water, wells, well bores and bore holes; power-operated tools, machines and apparatus for cementing oil, gas, condensate and water wells, well bores and bore holes; automated battery-operated down hole tools for use in drilling oil, gas, condensate and water, wells, well bores and bore holes; power-operated down hole cementing tools for use in oil, gas, condensate and water wells, well bores and bore holes; power-operated flow control and flow circulation tools for use in oil, gas, condensate and water, wells, well bores and bore holes; subsurface valves being parts of machines; parts of oilfield wellhead machines, namely, gate valves, ball valves, check valves, plug valves, globe valves, choke and manifold industrial pumps, pump and valve parts, pipe fittings and flanges; oil field machines, namely, intervention packers for sealing and securing oil, gas, condensate and water wells, well bores and bore holes; oil field machines being permanent packers for sealing and securing oil, gas, condensate and water wells, well bores and bore holes; oil field machines being packers actuated by electrical submersible pumps (ESP) for sealing and securing oil, gas, condensate and water wells, well bores and bore holes; oil field machines being retrievable packers for sealing and securing oil, gas, condensate and water wells, well bores and bore holes; oil field machines being cased hole packers for sealing and securing oil, gas, condensate and water wells, well bores and bore holes; oil field machines being open hole packers for sealing and securing oil, gas, condensate and water wells, well bores and bore holes; subs, namely, submersible pumps for sealing and securing oil, gas, condensate and water wells, well bores and bore holes; down hole subs spacer subs, namely, submersible pumps for sealing and securing oil, gas, condensate and water wells, well bores and bore holes; straddles, namely, belts for machines for sealing and securing oil, gas, condensate and water wells, well bores and bore holes; gas lift straddles, namely, belts for machines for sealing and securing oil, gas, condensate and water wells, well bores and bore holes; perforation cleanup straddles, namely, belts for machines for sealing and securing oil, gas, condensate and water wells, well bores and bore holes; power-operated setting tools for sealing and securing oil, gas, condensate and water wells, well bores and bore holes; motorized setting tools for sealing and securing oil, gas, condensate and water wells, well bores and bore holes; parts of machines for sealing and securing oil, gas, condensate and water wells, well bores and bore holes, namely, hangers, intervention hangers, retrievable hangers, plugs, bridge plugs, high pressure plugs, slips, mechanical slips, hydraulic slips, chokes, variable chokes, and hydraulically-operated chokes; parts and fittings for the aforesaid goods

Plug and abandonment of wells, namely, preparing wells for permanent closure through the placement of cement plugs; drilling of oil and gas-wells; drilling of wells; installation and maintenance of oil wells; underwater repair of wells, namely, cementing services for oil and gas wells; perforating, washing, cleaning, and cementing of wells; plugging, isolating and abandonment of wells, namely, preparing wells for permanent closure through the placement of cement plugs; rental of mechanical downhole equipment for perforation, washing, cleaning, cementing, plugging and abandonment of wells; providing construction supervision and consultation in relation to the plug and abandonment of wells