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2. Baptist well drilling - Wikipedia

   en.wikipedia.org/wiki/Baptist_well_drilling

   The standard drill bit is based on 1.25 inches (3.2 cm) water pipe fittings and unless a larger diameter is required, the borehole is cased with 1.5 inches (3.8 cm) PVC pipe. The main drill tool consists of a length of metal pipe with a bit/valve. Extensions are standard PVC potable water pipes. No temporary casing is used.

3. 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.

4. Bailer (hydrogeology) - Wikipedia

   en.wikipedia.org/wiki/Bailer_(hydrogeology)

   Also, if there is a high amount of sediment or turbidity, this may interfere with the ball check valve seating correctly. A basic disposable bailer can also be used as the slug in a Slug test to remove water from the well. This is sometimes referred to more specifically as the bail-down test.

5. Completion (oil and gas wells) - Wikipedia

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

   Within the tubing you can mount a combination of tools that will help to control fluid flow through the tubing. 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 ...

6. List of components of oil drilling rigs - Wikipedia

   en.wikipedia.org/wiki/List_of_components_of_oil...

   Drill pipe (#16) is a joint of hollow tubing used to connect the surface equipment to the bottom hole assembly (BHA) and acts as a conduit for the drilling fluid. In the diagram, these are stands of drill pipe which are 2 or 3 joints of drill pipe connected and stood in the derrick vertically, usually to save time while tripping pipe.

7. Measurement while drilling - Wikipedia

   en.wikipedia.org/wiki/Measurement_while_drilling

   For example, if the tool fails at 1,500 ft (460 m) while drilling with a triple rig (able to trip 3 joints of pipe, or about 90 ft (30 m) feet, at a time), then it would generally be faster to pull the tool out of the hole than it would be to rig up wireline and retrieve the tool, especially if the wireline unit must be transported to the rig.