Tubing is a kind of pipe that 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.
OCTG Tubing is manufactured in the same way as casing, except that an additional process known as “upsetting” is applied to thicken the pipes.The tubing is the devise used to transport oil or natural gas from the hydrocarbon reservoir to the earth surface. Tubes mainly include three different kinds, namely non-upset tubing (NU), external upset tubing (EU) and integral joint tubing (IJ). NU refers to the tube whose ends are threaded and coupling directly without being thickened. EU means both ends of the tube are thickened, threaded and then coupling. IJ refers to the tube whose ends are connected without coupling, one end being threaded through internal thickened and the other through external thickened.
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