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  2. Baptist well drilling - Wikipedia

    en.wikipedia.org/wiki/Baptist_well_drilling

    Like in sludging, the drilling process is continuous: the drill bit is normally not removed from the borehole until it is finished and the broken-up material is pumped to the surface in the drilling liquid (mud). But instead of using a hand as a valve on top of the drill pipe (sludging), the drill bit itself doubles as a foot-valve.

  3. Well control - Wikipedia

    en.wikipedia.org/wiki/Well_control

    Well control is the technique used ... is usually measured in pounds per square inch per foot or bars per meter. ... the wrong valve on the pump suction manifold and ...

  4. List of valves - Wikipedia

    en.wikipedia.org/wiki/List_of_valves

    Larner–Johnson Valve: needle control valve often in large sizes used in water supply systems; Leaf valve: one-way valve consisting of a diagonal obstruction with an opening covered by a hinged flap; Line blind valve: a thin sheet oriented perpendicular to the pipe. The sheet has a solid end and a flow-through end; sliding it from one position ...

  5. 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 ...

  6. Completion (oil and gas wells) - Wikipedia

    en.wikipedia.org/wiki/Completion_(oil_and_gas_wells)

    Gas lift well: gas is fed into valves installed in mandrels in the tubing strip. The hydrostatic head is lowered and the fluid is gas lifted to the surface. Single-well alternate completions: in this instance there is a well with two zones. In order to produce from both the zones are isolated with packers.

  7. Hand pump - Wikipedia

    en.wikipedia.org/wiki/Hand_pump

    On the up stroke of the piston the foot valve opens and suction brings water into the pump head. On the following down stroke of the piston the valve on the piston opens up and allows water to flow above the piston. On the successive up stroke of the piston water is pushed out of the outlet. A rural handpump in Belgium.