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  2. Pressure tank - Wikipedia

    en.wikipedia.org/wiki/Pressure_tank

    The diaphragm or bladder may itself exert a pressure on the water, but it is usually small and will be neglected in the following discussion. Case 1 is an empty tank at the charging pressure P c (gauge). The total volume of the tank is V t. Case 2 is a tank in use, with the air pressure at pressure P (gauge) and a water volume of V. Referring ...

  3. Oil well control - Wikipedia

    en.wikipedia.org/wiki/Oil_well_control

    Pump pressure, which is also referred to as system pressure loss, is the sum total of all the pressure losses from the oil well surface equipment, the drill pipe, the drill collar, the drill bit, and annular friction losses around the drill collar and drill pipe. It measures the system pressure loss at the start of the circulating system and ...

  4. Well control - Wikipedia

    en.wikipedia.org/wiki/Well_control

    + Pressure due to pumping at that point or pressure loss in the system. If we convert pressure under circulating condition in the annulus to its density equivalent it will be called ECD Dividing the above equation by 0.052*TVD into both sides:- ECD = (Pressure under static condition + Annular pressure loss) / (0.052 * TVD) ECD = MW + Annular ...

  5. Blowout preventer - Wikipedia

    en.wikipedia.org/wiki/Blowout_preventer

    In drilling a typical high-pressure well, drill strings are routed through a blowout preventer stack toward the reservoir of oil and gas. As the well is drilled, drilling fluid , "mud", is fed through the drill string down to the drill bit, "blade", and returns up the wellbore in the ring-shaped void, annulus , between the outside of the drill ...

  6. Hydraulic accumulator - Wikipedia

    en.wikipedia.org/wiki/Hydraulic_accumulator

    As the volume of the compressed gas changes, the pressure of the gas (and the pressure on the fluid) changes inversely. For low pressure water system use the water usually fills a rubber bladder within the tank (pictured), preventing contact with the tank which would otherwise need to be corrosion resistant.

  7. Water hammer - Wikipedia

    en.wikipedia.org/wiki/Water_hammer

    This pressure wave can cause major problems, from noise and vibration to pipe rupture or collapse. It is possible to reduce the effects of the water hammer pulses with accumulators, expansion tanks, surge tanks, blowoff valves, and other features. The effects can be avoided by ensuring that no valves will close too quickly with significant flow ...

  8. Waterlogged pitch causes controversy as US women’s ... - AOL

    www.aol.com/waterlogged-pitch-causes-controversy...

    Wet conditions were the main talking point during the US women’s soccer team’s penalty shootout victory over Canada in the W Gold Cup semifinals on Wednesday.

  9. Pipe network analysis - Wikipedia

    en.wikipedia.org/wiki/Pipe_network_analysis

    A major part of this network will consist of interconnected pipes. This network creates a special class of problems in hydraulic design, with solution methods typically referred to as pipe network analysis. Water utilities generally make use of specialized software to automatically solve these problems.

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