Oil 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. Tubing is manufactured in the same way as casing, except that an additional process known as “upsetting” is applied to thicken the pipes.
Oil field tubing is the conduit through which oil and gas are brought from the producing formations to the field surface facilities for processing. Tubing must be adequately strong to resist loads and deformations associated with production . Further, tubing must be sized to support the expected rates of production of oil and gas. Clearly, tubing that is too small restricts production and subsequent economic performance of the well. Tubing that is too large, however, may have an economic impact beyond the cost of the tubing string itself, because the tubing size will influence the overall casing design of the well.
The details of the OCTG tubing‘s descriptions are shown as below:
1 Production Process: Seamless & ERW
2 Specification: API 5CT /5B
3 Thread: EUE (Exteral Upset End), NUE (Non Upset End).
4 Surface: Corrosion proofing water based paint
5 Heat treatment: Normalized, Quencher+Temper