API 5L does not specifically cover tubing used in oil and gas wells; rather, it is a specification for seamless and welded steel line pipe. API 5CT (American Petroleum Institute Specification 5CT) is the standard that specifically covers oil country tubular goods (OCTG), including tubing used in oil and gas wells.
If you're looking for details on oil tubing that complies with API standards, you should refer to API 5CT. Here are some key details about API 5CT oil tubing:
API 5CT tubing is typically manufactured from carbon steel or low-alloy steel with specific chemical and mechanical properties to withstand the conditions encountered in oil and gas wells.
API 5CT specifies various grades of tubing, such as J55, K55, N80, L80, C90, T95, P110, and Q125. Each grade has specific requirements in terms of strength, corrosion resistance, and other properties.
Tubing ends are usually threaded, coupled with API connections, and provided with external upset (EUE) or non-upset (NU) ends, depending on the application.
API 5CT tubing comes in different sizes, ranging from 1.05 inches to 4.5 inches in diameter. The tubing sizes are specified based on the nominal outside diameter.
API 5CT tubing connections are threaded and can be classified into different types, such as short round thread (STC), long round thread (LTC), and buttress thread (BTC).
Tubing may be provided with protective coatings, such as phosphate, varnish, or corrosion-resistant alloy coatings, to enhance its durability and resistance to environmental factors.
API 5CT sets standards for inspection and testing of tubing, including non-destructive testing (NDT) methods, visual inspection, and dimensional checks.
API 5CT tubing is used in the production and exploration of oil and gas wells. It serves as a conduit for fluids to be transported from the reservoir to the surface.
API 5L Oil Tubing are carbon steel pipes used for oil and gas transmissions. They include pipes manufactured in seamless and welded (ERW, SAW). The grades include API 5L Grade B, X42, X46, X52, X56, X60, X65, X70, X80 PSL1 & PSL2 onshore, offshore and sour services. It's important to consult the specific edition of API 5CT and any additional requirements from the relevant authorities or the tubing manufacturer for accurate and detailed information on tubing specifications. Oil casing is a large-diameter pipe that acts to fix the wall or bore of oil and natural gas wells. The casing is inserted into the wellbore and fixed with cement to help the wellbore separate the rock formation.
| API 5CT oil casing / oil tube / oil drilling pipe | ||
| Oil casing | Thickness | 4-16mm |
|---|---|---|
| Out diameter | 89-508mm | |
| Length | R-1:4.88~7.62m | |
| R-2:7.62~10.36m | ||
| R-3:more than 10.36m | ||
| Steel Grade | J55,K55,N80,N80Q,L80,P110 and etc. | |
| Standard | API 5CT | |
| Oil tubing | Thickness | 4-16mm |
| Out diameter | 25-508mm | |
| Length | 5.8m,6m,12m or as buyer’s request. | |
| Standard | API 5L, YB235-70, GB/T 9711.1,GB/T 97711.2 | |
| Oil drilling pipe | Thickness | 4-16mm |
| Out diameter | 10-508mm | |
| Length | 5.8m,6m,12m or as buyer’s request. | |
| Standard | API 5D, YB528-65 | |
| Quality | First Grade | |
| Thread Type | STC,LTC,BC, or BTC. | |
| Application | Used in oil well drilling.It is mainly used for drilling process and after | |
| completion of borehole wall support, to ensure that the drilling process | ||
| and the whole Wells after completion are normal running . | ||
| Certificate | API 5CT, ISO9001, ISO14001, OHSAS18001 | |
| Our advantage | Superior quality excellent performance Made of superior quality material, | |
| these pipes are known for their excellent performance, | ||
| optimum performance and cost effectiveness. | ||
