Pipe Standard:API SPEC 5CT
Size:OD: 114.3-508mm,WT: 5.21-16.13mm
Process Type: Seamless (SMLS), Electric Resistance Welded (ERW)
Grade: J55, K55, N80-1, N80-Q, L80-1, L80-9Cr, L80-13Cr,C95, P110.
Thread types:STC, LTC, BTC etc
Shandong Juhuo Special Steel Co., LTD +86 139 1137 1422 sale3@sdjhtg.com
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 | - |
Warehouse Storage
Shandong Juhuo Special Steel Co., Ltd. is a comprehensive enterpriseintegrating steel supply and processing. The company has a large inventory of metal materials such as stainless steel, galvanized, profiles, aluminum.copper, lead, etc, which can meet the needs of customers in different fields.The company has strong strength and has a professional team with excellent technology and rich experience.The company has also introduced advanced production equipment and processing technology, which can provide customers with steel products of various specifications and processing requirements.
Customer conversation
We provide the products consultation , purchase plan suggestion , logistic service ( including the shipment service , custom works ,etc ).
Application field
Taking technology as the guide, quality as the guarantee, and service as the purpose, the company actively explores the market, expands the scale of operation, and constantly improves enterprise management to ensure product quality and service quality.
The inner layer is packed with waterproof paper, the outer layer is packed with iron sheets, and fixed with fumigated wooden pallets. It can effectively protect the product from corrosion during the shipping process.
Sure, we can send samples all over the world, and our samples are free.
You need to provide the grade, width, thickness, coating, and tonnage you need to buy.
Under normal circumstances, we ship from Shanghai, Tianjin, Qingdao, Ningbo and other ports, you can choose other ports according to your needs.
Due to the cyclical changes in raw material prices, prices vary from period to period.
We have ISO9001, SGS, EWC and other certifications.
Generally speaking, our delivery time is within 30-45 days, it may be delayed if there is a large demand or special circumstances.
Of course, we welcome customers from all over the world to visit our factory.
Of course, all of our products are strictly quality tested before packing, and unqualified products will be destroyed.
Under normal circumstances, our online service time is 8:00-22:00 Beijing time, after 22:00, we will reply to your inquiry on the next working day.