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  2. Pumpjack - Wikipedia

    en.wikipedia.org/wiki/Pumpjack

    Pump size is also determined by the depth and weight of the oil to remove, with deeper extraction requiring more power to move the increased weight of the discharge column (discharge head). A beam-type pumpjack converts the rotary motion of the motor (usually an electric motor ) to the vertical reciprocating motion necessary to drive the ...

  3. Extraction of petroleum - Wikipedia

    en.wikipedia.org/wiki/Extraction_of_petroleum

    Tertiary recovery begins when secondary oil recovery is not enough to continue adequate extraction, but only when the oil can still be extracted profitably. This depends on the cost of the extraction method and the current price of crude oil. When prices are high, previously unprofitable wells are brought back into use, and when they are low ...

  4. Oilseed press - Wikipedia

    en.wikipedia.org/wiki/Oilseed_press

    The simplicity of this procedure is shadowed by the diversity of oilseed press designs that perform it. As seen in Table 1, oilseed press designs can be placed into the three major classes of traditional, manual, and mechanical presses. [2] Traditional presses include ghanis, water extraction systems, and other methods. [2]

  5. Pump - Wikipedia

    en.wikipedia.org/wiki/Pump

    A small, electrically powered pump A large, electrically driven pump for waterworks near the Hengsteysee, Germany. A pump is a device that moves fluids (liquids or gases), or sometimes slurries, [1] by mechanical action, typically converted from electrical energy into hydraulic or pneumatic energy.

  6. Hand pump - Wikipedia

    en.wikipedia.org/wiki/Hand_pump

    Irrigation is under way by pump-enabled extraction directly from the Gumti, seen in the background, in Comilla, Bangladesh. One sort of pump once common worldwide was a hand-powered water pump, or 'pitcher pump'. It was commonly installed over community water wells in the days before piped water supplies.

  7. 10 Things You Should Never Pay For - AOL

    www.aol.com/10-things-never-pay-140000055.html

    6. Bottled Water. While it might seem like a stretch to call the entire bottled water industry a scam … it kinda is. Most bottled water companies simply take municipal water and filter it for ...