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API Casing
Category：
Oil country tubular goods
Key Words：
Oil country tubular goods
API Casing
Description
Casing is used for lining the complete borehole which has been dug into the ground to procure oil. Similar to the drill pipe, the oil well casing pipe is also subjected to axial tension, therefore they are required to be made from high-quality strong steel material. OCTG casing is large diameter pipe which are held in place in the borehole using cement.
The diameters of OCTG casing pipe range from 4.5″ to 36″. The well-cemented pipe acts as the structural component of the well and offer hole integrity. They prevent the well from collapsing when the drilling process is on. Good quality, well cemented casing can stay in place for the whole life of the well.
The oil well casing pipe are further divided into:
Conductor Casing – Conductor casing is the first boundary between the surface and the subsurface. It helps prevention of well collapse; it keeps away the groundwater and most importantly provides structural support. Conductor casing is installed in the ground by either drilling it or hammering it down. They are available in sizes ranging from 18″ to 36″.
Surface Casing – The purpose of Surface casing is primarily environmental and to ensure safety. It helps in separating the freshwater zones, offering protection from blowout and supporting the wellhead and blow out prevention equipment. Therefore surface casings are required to maintain very high safety standards. They are responsible for supporting the next casing in line. They may vary in size depending on their purpose, but the most common size of surface casing is 13 3/8”.
Intermediate Casing: Intermediate casing is not always required in all types of oil and gas production. If used, they are placed between the surface and the production casing. They are available in sizes ranging from 13 3/8” to 16”.
Production Casing – Production casing help provide structural integrity and pressure control of the hydrocarbon-bearing sections mainly during the production of oil.
Production Liner – Production liners can be suspended from the production casing or one of the previous casings. They help in reducing the cost significantly as the liner is not required to run through the full depth of the well. Liners can be pre-perforated to help save time and cost.
More casing pipes and their colors
Specification
API 5CT Well Casing Length:
|
API 5CT Casing |
Range 1 |
Range 2 |
Range 3 |
|
4.88~7.62 |
7.62~10.36 |
10.36~14.63 |
Dimension
| Labels | OD(mm) | WT(mm) | J55/K55 | N80 | L80 | C90/T95 | P110 | Q125 | |
| 4 1/2 | 9.5 | 114.3 | 5.21 | PS | - | - | - | - | - |
| 10.5 | 114.3 | 5.69 | PSB | - | |||||
PACKING AND SHIPPING
The company has main production lines such as pickling, cold rolling, hot-dip galvanizing, hot-dip galvanizing, thick plate galvanizing, and color coating, forming an annual output of 1 million tons of pickling coils, 1 million tons of cold-rolled steel sheets, and 900,000 tons of hot-dip steel sheets. The scale of galvanized and hot-dip aluminum-zinc-silicon steel sheets, 450,000 tons of thick galvanized steel sheets, and 300,000 tons of color-coated steel sheets. It is one of the largest suppliers of steel and non-ferrous metal smelting and processing in Shandong Province.
FACTORY
Shandong Baopu Metal Products Co., Ltd. was established in March 2010. It is a comprehensive large-scale enterprise integrating coating products and various steel processing and production, warehousing, distribution, and foreign trade sales.
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Tel : +86-13455162832
WhatsApp : +86-13455162832
Wechat : 13455162832
Email : admin@sdbaopumetal.com
Address : Liaocheng Economic and Technological Development Zone, Shandong Province ,China
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