Casing is a large-diameter pipe that serves as the structural retainer for the walls of oil and gas wells, or well bore. 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. Steel Casing Pipes have smooth wall & minimum yield strength of 35,000 psi.
Tubing: Tubing is pipe used for the transportation of crude oil and natural gas from an oil or gas layer to the surface after drilling is complete. It is made to withstand the pressure generated from the extraction process. Tubing is manufactured in the same way as casing, except that an additional process known as “upsetting” is applied to thicken the pipes.
Specification
Descriptions:
1 Production Process: Seamless & ERW
2 Specification: API 5CT /5B
3 Out Diameter: 4 1/2″- 20″ (114.3mm-508mm)
4 Thread: LTC (Long Round Thread), STC (Short Round Thread), BTC (Buttress Thread) and other premium connections which can be made as per the given drawings
5 Length: R1 (4.88-7.62m), R2 (7.62-10.36m), R3 (10.36-14.63m))
6 Steel Grade: H-40, J55, K-55, N-80, L-80, P110, Q-125
Packing
Plastic plugs in both ends, Hexagonal bundles of max. 2,000kg with several steel strips, Two tags on each bundle, Wrapped in waterproof paper, PVC sleeve, and sackcloth with several steel strips
Test
Chemical Component Analysis, Mechanical Properties (Ultimate tensile strength, Yield strength, Elongation), Technical Properties (Flattening Test, Flaring Test, Bending Test, Hardness Test, Blow Test, Impact Test etc), Exterior Size Inspection, Nondestructive Test (Ultrasonic flaw detector, Eddy current flaw detector), Hydrostatic Test.
Mill Test Certificate: EN 10204/3.1B
Payment Terms: T/T， L/C
Trade terms: FOB, CFR, CIF
Delivery Time: Within 30 days