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2. Tremie - Wikipedia

   en.wikipedia.org/wiki/Tremie

   Various types of foot valve may be used to shut off flow while moving the pipe when pouring small volumes in disjoint areas, where it is impracticable to maintain immersion of the nozzle in the fresh concrete, as in repair work. One type is a rubber sleeve inside a section of the pipe which can be pneumatically inflated to occlude the bore over ...

3. Piping and plumbing fitting - Wikipedia

   en.wikipedia.org/wiki/Piping_and_plumbing_fitting

   [18]: 61 To reduce flow resistance and solid deposits when the direction of flow is changed, they use a shallow curve with a large radius of curvature. [18]: 61 [19] In addition, a well-designed system will often use two 45° elbows instead of one 90° elbow (even a sweep 90° elbow) to reduce flow disruption as much as possible. [18]: 61

4. 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.

5. AOL

   search.aol.com

   The search engine that helps you find exactly what you're looking for. Find the most relevant information, video, images, and answers from all across the Web.

6. Wellhead - Wikipedia

   en.wikipedia.org/wiki/Wellhead

   When the well has been drilled, it is completed to provide an interface with the reservoir rock and a tubular conduit for the well fluids. The surface pressure control is provided by a Christmas tree, which is installed on top of the wellhead, with isolation valves and choke equipment to control the flow of well fluids during production.

7. Check valve - Wikipedia

   en.wikipedia.org/wiki/Check_valve

   A check valve, non-return valve, reflux valve, retention valve, foot valve, or one-way valve is a valve that normally allows fluid (liquid or gas) to flow through it in only one direction. [1] Check valves are two-port valves, meaning they have two openings in the body, one for fluid to enter and the other for fluid to leave. There are various ...