Products

N80 Casing
Application:Oil well casing serves as well sidewall 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

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

Yili(China)Steel Materials Co.,Ltd

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

LabelsOD(mm)WT(mm)J55/K55N80L80C90/T95P110Q125
4 1/29.5114.35.21PS-----
10.5114.35.69PSB-



 

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Quality and After-sale Assurance

Rich product specifications, according to customer requirements to provide processing customized products.

Strict quality inspection, to provide high quality products, satisfactory service.

Provide the most cost-effective product quotation scheme.

Have advanced production equipment, pay attention to the details of the production process, can provide sample service.

Strictly check the source of raw materials and provide a perfect material supply chain.

Provide export standard packaging or packaging according to customer requirements.

FAQ

Q1:May I visit your factory?
A: Of course. We give a warm welcome.

 

Q2:Can you provide samples?
A: Yes, we can provide free samples, but the freight needs to be borne by the buyer.

 

Q3:How long is your delivery time?
A: If the goods are in stock, generally 3-7 days;  If there is no stock, 7-15 days, depending on the quantity of goods.

 

Q4:How to guarantee the quality of the goods?
A: Always a pre-production sample before mass production, always final inspection before shipment.

 

Q5:How can I get a quote?
A: Please provide the specifications of the required products, such as material, size, shape, etc. It is convenient for us to offer the best quotation.

 

Q6:What's your packing method?
A: Export standard packaging or according to customer needs packaging.

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