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    COUPLING

    COUPLING

    A short length of pipe used to connect two joints of casing or tubing. A casing or tubing coupling has internal threads (female threadform) machined to match the external threads (male threadform) of the long joints of casing.

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    PUP JOINT

    PUP JOINT

    Pup joints and varying lengths of tubing and casing are used to adjust the production string length as close as possible to the desired value.

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    TUBING

    TUBING

    Tubing is pipe used for the transportation of crude oil and natural gas from an oil or gas layer to the surface after drilling is complete. It is made to withstand the pressure generated from the extraction process.

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    CASING

    CASING

    Casing pipe is most often used in underground construction projects to encase or protect utility lines from being damaged.            

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