Corrosion resistant oil casing series

The company has advanced oil casing coupling processing technology and new product development capabilities; has senior professional and technical personnel and skilled workforce; has sophisticated production and processing equipment, inspection equipment and instruments, as well as a wealth of oil-specific tubing (OCTG) products Threading experience.

Key words:

L80-13Cr Coupling / N80 CS buckle / PH6 drill collar / short section / Coupling Conversion and Adapter / wear-resistant short section /

Category:

Related Products

Consult

Product Details

The company's full range of product specifications:

Outer diameter: Φ26.67mm~Φ177.8mm; Wall thickness: 2.87mm~22.2mm

Product Features Description:

1. Pure steel -------- adopt high-purity steel smelting technology and vacuum degassing method, P≤0.015%, S≤0.008%; use calcification treatment technology to control the shape of inclusions; control five Harmful elements.

2. Stable performance -------- After quenching, the full cross-sectional area of the steel pipe obtains more than 98% martensite structure, and after tempering, a fine and uniform tempered sorbite structure is formed.

3. Stress corrosion resistance ----- eliminate residual stress, and the corrosion structure on the surface of the material forms a corrosion-resistant oxide film with a thickness of one or several atomic layers and a high content of stable alloy components.

4. Uniform structure ----- grain size > grade 8, uniform hardness.

Steel grade	Product name	Maximum or allowable range wt%
		C	Si	Mn	P	S	Cr	Mo	Ni	Cu	T
80	CW80-1Cr				0.018	0.008	0.5-1.5
	CW80-3Cr				0.018	0.008	2.5-3.5
	CW80S-3Cr CW80SS-3Cr				0.015	0.005	2.5-3.5
	CW80S-13Cr				0.015	0.005	12.0-14.0	0.5	0.5	0.25
90	CW90-3Cr				0.018	0.008	2.5-3.5
	CW90S-3Cr CW90SS-3Cr				0.015	0.005	2.5-3.5
95	CW95-3Cr				0.018	0.008	2.5-3.5
	CW95S-3Cr CW95SS-3Cr				0.015	0.005	2.5-3.5
	CW95-13Cr				0.018	0.008	12.0-14.0	3.0	6.0	0.5
	CW95S-13Cr				0.015	0.005	12.0-14.0	3.0	6.0	0.5
110	CW110-13Cr				0.018	0.008	12.0-14.0	3.0	6.0	0.5
	CW110S-13Cr	0.04			0.015	0.005	12.0-14.0	3.0	6.0	0.5
80	CW80S CW80SS	0.30	0.35	0.90	0.015	0.008	0.9	0.50	0.20	0.20	0.05
90	CW90S CW90SS	0.30	0.35	0.90	0.015	0.008	1.2	0.50	0.20	0.20	0.05
95	CW95S CW95SS	0.30	0.35	0.90	0.015	0.008	1.2	0.50	0.20	0.20	0.05
110	CW110S CW110SS	0.30	0.35	0.90	0.015	0.008	1.2	0.50	0.20	0.20	0.05

The oil casing is mainly used to support the well wall during the drilling process and after the completion of the well, so as to ensure the drilling process and the normal operation of the entire oil well after the completion of the well. The oil pipe mainly transports the oil and gas at the bottom of the oil well to the ground. Several layers of casing are used for each well according to different drilling depths and geological conditions.

Cement cementing should be used after the casing is run down the well. It is different from tubing and drill pipe and cannot be reused. It is a one-time consumable material.

Oil casing is the lifeblood of keeping oil wells running. Due to different geological conditions, the downhole stress state is complex, and the comprehensive action of tension, compression, bending and torsional stress acts on the pipe body, which puts forward higher requirements for the quality of the casing itself. Once the casing itself is damaged for some reason, it may lead to the reduction of production of the whole well, or even to be scrapped.

Casing can be divided into: conduit, surface casing, technical casing and oil casing according to the usage. According to the strength of the steel itself, the casing can be divided into different steel grades, namely J55, K55, N80, L80, C90, T95, P110, Q125, V150, etc. The well conditions and well depths are different, and the steel grades used are also different.

NONE

Corrosion resistant oil casing series

NONE

Corrosion resistant oil casing series