Description
Product Name: API 5CT Casing Pipe Product Keyword: Steel Pipe, Oil
& Gas Pipe, Petroleum Pipe, API Pipe, Casing Pipe, Steel Tube
Brief Description: Outside Diameter: **1/2†to *0â€; Steel
Grade: J*5, K*5, N*0, L*0, P**0; End-Finish: PE, STC, LTC, BTC;
Length Range: R1/R2/R3; Manufacture Process: Seamless or
Electric-Welded (Electric-Resistance or Electric-Induction Welded);
Product Details: Standard: API Specification 5CT, Ninth Edition,
July ***1; Outside Diameter: **1/2â€**0†(**4.*****8.*0mm);
Steel Grade: J*5, K*5, N*0, L*0, P**0; Range Length: R1
(4.***7.*2metres), R2 (7.****0.*6metres), R3 (*0.****4.*3metres);
Manufacture Process: Seamless or Electric-Welded
(Electric-Resistance or Electric-Induction Welded); Type of
Threading: STC (Short Round Thread), LTC (Long Round Thread), BTC
(Buttress Thread), or PE (Plain End, unthreaded). Casing is a
large-diameter pipe that serves as the structural retainer for the
walls of oil and gas wells, or wellbore. It is inserted into a well
bore and cemented in place to protect both subsurface formations
and the wellbore from collapsing and to allow drilling fluid to
circulate and extraction to take place. The following different
types of casing are used in the extraction process: Surface casing
- Protects the well from contamination in shallow water and gas
layers. - Supports the wellhead equipment and sustains the weight
of the other layers of casing. Intermediate casing - Isolates
different layers of pressure to facilitate normal circulation of
drilling fluid and protect the production casing. - Intermediate
casing facilitates the installation of blow-out preventers,
anti-leakage devices and tailpipes in the well. Production casing
(oil string) - It is the conduit through which oil and gas pass
from a below surface reservoir. - It protects the well and
separates fluids into various layers. For the manufacture of
casing, green pipes are threaded on each end at first. The
threading is then inspected and, if necessary, rethreaded to ensure
that the thread accurately connects to the coupling. The casing are
strengthened by surface treatment and are subject to various
inspections, including drifting and hydrostatic tests before they
are coated and packaged into casing.
