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2. Pumpjack - Wikipedia

   en.wikipedia.org/wiki/Pumpjack

   For the scaffolding system, see Pump-jack. A pumpjack is the overground drive for a reciprocating piston pump in an oil well. [ 1 ] It is used to mechanically lift liquid out of the well if there is not enough bottom hole pressure for the liquid to flow all the way to the surface. The arrangement is often used for onshore wells.

3. Jack (device) - Wikipedia

   en.wikipedia.org/wiki/Jack_(device)

   A jack is a mechanical lifting device used to apply great forces or lift heavy loads. A mechanical jack employs a screw thread for lifting heavy equipment. A hydraulic jack uses hydraulic power. [ 1] The most common form is a car jack, floor jack or garage jack, which lifts vehicles so that maintenance can be performed.

4. Pallet jack - Wikipedia

   en.wikipedia.org/wiki/Pallet_jack

   A pallet jack, also known as a pallet truck or pallet pump, is a tool used to lift and move pallets. Pallet jacks are the most basic form of a forklift [ 1 ] and are intended to move pallets within a warehouse .

5. Sucker rod - Wikipedia

   en.wikipedia.org/wiki/Sucker_rod

   Sucker rod. A sucker rod is a steel rod, typically between 25 and 30 feet (7 to 9 meters) in length, and threaded at both ends, used in the oil industry to join together the surface and downhole components of a reciprocating piston pump installed in an oil well. The pumpjack is the visible above-ground drive for the well pump, and is connected ...

6. Scaffolding - Wikipedia

   en.wikipedia.org/wiki/Scaffolding

   Scaffolding for rehabilitation in Madrid, Spain [ 1] Scaffolding, also called scaffold or staging, [ 2] is a temporary structure used to support a work crew and materials to aid in the construction, maintenance and repair of buildings, bridges and all other human-made structures. Scaffolds are widely used on site to get access to heights and ...

7. Oil well - Wikipedia

   en.wikipedia.org/wiki/Oil_well

   An oil well is a drillhole boring in Earth that is designed to bring petroleum oil hydrocarbons to the surface. Usually some natural gas is released as associated petroleum gas along with the oil. A well that is designed to produce only gas may be termed a gas well. Wells are created by drilling down into an oil or gas reserve and if necessary ...