the importance of Oil tubing Pipe in the petroleum industry

The petroleum industry is a vital sector that plays a crucial role in the global economy. It is responsible for the extraction, refining, and distribution of Oil and gas, which are essential sources of energy for various industries and households. One of the key components in this industry is the oil tubing pipe, which is used in the drilling and production of oil wells. Oil Tube Oil tubing pipes are designed to withstand the harsh conditions of oil and gas wells. They are made from high-quality materials, such as J55  API 5ct and N80q Casing, which are known for their strength and durability. These pipes are manufactured according to strict industry standards to ensure their reliability and performance. The primary function of oil tubing pipes is to transport oil and gas from the wellbore to the surface. They are inserted into the wellbore and connected to the Production casing, forming a conduit for the flow of oil and gas. The tubing pipes are designed to withstand high pressure and temperature, as well as corrosive substances that may be present in the wellbore. In addition to their transportation function, oil tubing pipes also serve as a conduit for various operations in the oil well. For instance, they can be used to inject chemicals or water into the wellbore to enhance oil recovery. They can also be used to extract oil samples for analysis or to install downhole equipment, such as pumps or sensors.

Tensile and Hardness Requirements
grade			Yield Strength MPa		Tensile Strength	Hardness a,c		Specified Wall thickness	Allowable Hardness Variation b
	Type	Total Elongation Under Load			min MPa	max
			min	max		HRC	HBW	mm	HRC
1	2	3	4	5	6	7	8	9	10
H40	—	0.5	276	552	414	—	—	—	—
J55	—	0.5	379	552	517	—	—	—	—
K55	—	0.5	379	552	655	—	—	—	—
N80	1	0.5	552	758	689	—	—	—	—
N80	Q	0.5	552	758	689	—	—	—	—
R95	—	0.5	655	758	724	—	—	—	—
L80 L80	1	0.5	552	655	655	23	241	—	—
L80	9Cr 13Cr	0.5	552	655	655	23	241	—	—
		0.5	552	655	655	23	241	—	—
C90	1	0.5	621	724	689	25.4	255	£12.70	3
								12.71 to 19.04	4
								19.05 to 25.39	5
								³ 25.40	6
T95	1	0.5	655	758	724	25.4	255	£12.70	3
								12.71 to 19.04	4
								19.05 to 25.39	5
								³ 25.40	6
C110	—	0.7	758	828	793	30	286	£12.70	3
								12.71 to 19.04	4
								19.05 to 25.39	5
								³ 25.40	6
P110	—	0.6	758	965	862	—	—	—	—
Q125	1	0.65	862	1034	931	b	—	£12.70	3
								12.71 to 19.04 19.05	4
									5
a In case of dispute, laboratory Rockwell C hardness testing shall be used as the referee method.
b No hardness limits are specified, but the maximum variation is restricted as a manufacturing control in accordance with 7.8 and 7.9.
c For through-wall hardness tests of grades L80 (all types), C90, T95 and C110, the requirements stated in HRC scale are for maximum mean hardness number.

The choice of oil tubing pipe is crucial in the petroleum industry. Different types of tubing pipes are available, each with its own specifications and capabilities. The selection of the appropriate tubing pipe depends on various factors, such as the depth and temperature of the well, the type of oil or gas being produced, and the specific requirements of the operation.

J55 API 5CT and N80q casing are two commonly used materials for oil tubing pipes. J55 API 5CT is a low carbon steel with excellent toughness and resistance to corrosion. It is suitable for shallow to medium-depth wells and can withstand moderate pressure and temperature. N80q casing, on the other hand, is a higher strength material that is suitable for deeper wells and more demanding conditions. Another important consideration in the selection of oil tubing pipes is the type of connection used. The two most common types of connections are eue and Nue. Eue stands for external upset end, which means that the pipe has a thicker wall at the end to provide a stronger connection. Nue stands for non-upset end, which means that the