API Oil Drill Pipe for Oil and Gas Well Drilling

• Customization: Available
• After-sales Service: 1 Year
• Warranty: 1 Year
• Model NO.: VSP-DP
• Certification: ISO 9001:2000, ISO 9001:2008, API 5D
• Power Source: Electric
• Operation Pressure: Atmospheric Pressure
• Applicable Medium: Mud, Water, Natural Gas, Crude Oil
• Structure: Vertical
• Material: Alloy
• Length: 27′-32′
• Joint Coupling: API or GOST
• Thread Protection: Equipped
• Document: Test Report of Mechanical Performence
• Transport Package: Iron Frame
• Specification: 2.3/8"--6.5/8"
• Trademark: VSP
• Origin: China
• HS Code: 8431431000
• Production Capacity: 20000 M/Year
• Package Size: 950.00cm * 80.00cm * 35.00cm
• Package Gross Weight: 5000.000kg

Product Description

Drill pipe, is hollow, thin-walled, steel or aluminium alloy piping that is used on drilling rigs. It is hollow to allow drilling fluid to be pumped down the hole through the bit and back up the annulus. It comes in a variety of sizes, strengths, and wall thicknesses, but is typically 27 to 32 feet in length . Longer lengths, up to 45 feet,
Drill pipe is a portion of the overall drill string. The drill string consists of both drill pipe and the bottom hole assembly (BHA), which is the tubular portion closest to the bit. The BHA will be made of thicker walled heavy weight drill pipe (HWDP) and drill collars, which have a larger outside diameter and provide weight to the drill bit and stiffness to the drilling assembly. Other BHA components can include a mud motor, measurement while drilling (MWD) apparatus, stabilizers, and various specialty downhole tools. The drill stem includes the entire drill string, plus the kelly that imparts rotation and torque to the drill pipe at the top.

Two main functions:

   1-Torque Transmission: Drill pipes are designed to transfer drilling torque over long distances, often spanning several miles, from the drilling rig's surface down to the drill bit.

   2-Fluid Circulation: A drill pipe serves as a conduit for drilling fluid, also known as 'drilling mud', allowing it to flow down from the surface and back up the wellbore. Drilling fluid is crucial for cooling the drill bit, carrying cuttings to the surface, and maintaining pressure in the well.

Given the substantial depths reached in drilling operations, which can extend up to nearly 15,000 feet, connecting different drill pipe sections is necessary. This connection process typically involves welding together threaded tool joints, including the box tool joint and the pin tool joint, to create a continuous length of drill pipe.

Manufacturing process
Modern drill pipe is made from the welding of at least three separate pieces: box tool joint, pin tool joint, and the tube. The green tubes are received by the drill pipe manufacturer from the steel mill. The ends of the tubes are then upset to increase the cross-sectional area of the ends. The tube end may be externally upset (EU), internally upset (IU), or internally and externally upset (IEU). Standard max upset dimensions are specified in API 5DP, but the exact dimensions of the upset are proprietary to the manufacturer. After upsetting, the tube then goes through a heat treating process. Drill pipe steel is commonly quenched and tempered to achieve high yield strengths (135 ksi is a common tube yield strength).
The tool joints (connectors) are also received as green tubes. After a quench and temper heat treat, the tool joints are cut into box (female) and pin (male) threads. Tool joints are commonly 120 ksi Specified Minimum Yield Strength (SMYS), rather than the 135 ksi of the tube. They generally are stiffer than the tube, increasing the likelihood of fatigue failure at the junction. The lower SMYS on the connection increases the fatigue resistance. Higher strength steels are typically harder and more brittle, making them more susceptible to cracking and subsequent stress crack propagation.
Tubes and tool joints are welded using rotary inertia or direct drive friction welding. The tube is held stationary while the tool joint is revolved at high RPMs. The tool joint is then firmly pressed onto the upset end of the tube while the tool joint is rotating. The heat and force during this interaction weld the two together. Once the "ram horns" or excess material is removed, the weld line can only be seen under a microscope. Inertia friction welding is the traditional proven method. Direct drive friction welding is controlled and monitored up to 1,000 times a second, resulting in a fine quality weld that does not necessarily need a full heat treat quench and temper regime.

Specifications:

Pipe						Tool Joint
Size OD, in.	Nominal Weight, lb/ft	Upset Type	Grade	Wall Thickness, in.	ID, in.	Connection Type	OD, in.	ID, in.	Pin Tong Space*, in.	Box Tong Space*, in.
2-3/8	6.65	EU	E-75	0.280	1.815	NC26	3-3/8	1-3/4	9	10
			X-95	0.280	1.815	NC26	3-3/8	1-3/4	9	10
			G-105	0.280	1.815	NC26	3-3/8	1-3/4	9	10
			S-135	0.280	1.815	NC26	3-5/8	1-3/4	9	10
2-7/8	10.40	EU	E-75	0.362	2.151	NC31	4-1/8	2-1/8	9	11
			X-95	0.362	2.151	NC31	4-1/8	2	9	11
			G-105	0.362	2.151	NC31	4-1/8	2	9	11
			S-135	0.362	2.151	NC31	4-3/8	1-5/8	9	11
3-1/2	13.30	EU	E-75	0.368	2.764	NC38	4-3/4	2-11/16	10	12-1/2
			X-95	0.368	2.764	NC38	5	2-9/16	10	12-1/2
			G-105	0.368	2.764	NC38	5	2-7/16	10	12-1/2
			S-135	0.368	2.764	NC38	5	2-1/8	10	12-1/2
	15.50	EU	E-75	0.449	2.602	NC38	5	2-9/16	10	12-1/2
			X-95	0.449	2.602	NC38	5	2-7/16	10	12-1/2
			G-105	0.449	2.602	NC38	5	2-1/8	10	12-1/2
			S-135	0.449	2.602	NC40	5-1/2	2-1/4	9	12
4	14.00	IU	E-75	0.330	3.340	NC40	5-1/4	2-13/16	9	12
			X-95	0.330	3.340	NC40	5-1/4	2-11/16	9	12
			G-105	0.330	3.340	NC40	5-1/2	2-7/16	9	12
			S-135	0.330	3.340	NC40	5-1/2	2-7/16	9	12
		EU	E-75	0.330	3.340	NC46	6	3-1/4	9	12
			X-95	0.330	3.340	NC46	6	3-1/4	9	12
			G-105	0.330	3.340	NC46	6	3-1/4	9	12
			S-135	0.330	3.340	NC46	6	3	9	12
	15.70	IU	E-75	0.380	3.240	NC40	5-1/4	2-11/16	9	12
			X-95	0.380	3.240	NC40	5-1/4	2-7/16	9	12
			G-105	0.380	3.240	NC40	5-1/2	2-7/16	9	12
			S-135	0.380	3.240	NC40	5-1/2	2	9	12
		EU	E-75	0.380	3.240	NC46	6	3-1/4	9	12
			X-95	0.380	3.240	NC46	6	3-1/4	9	12
			G-105	0.380	3.240	NC46	6	3-1/4	9	12
			S-135	0.380	3.240	NC46	6	3	9	12
4-1/2	16.60	IEU	E-75	0.337	3.826	NC46	6-1/4	3	9	12
			X-95	0.337	3.826	NC46	6-1/4	3-1/4	9	12
			G-105	0.337	3.826	NC46	6-1/4	3	9	12
			S-135	0.337	3.826	NC46	6-1/4	2-3/4	9	12
		EU	E-75	0.337	3.826	NC50	6-5/8	3-3/4	9	12
			X-95	0.337	3.826	NC50	6-5/8	3-3/4	9	12
			G-105	0.337	3.826	NC50	6-5/8	3-3/4	9	12
			S-135	0.337	3.826	NC50	6-5/8	3-1/2	9	12
	20.00	IEU	E-75	0.430	3.640	NC46	6-1/4	3	9	12
			X-95	0.430	3.640	NC46	6-1/4	2-3/4	9	12
			G-105	0.430	3.640	NC46	6-1/4	2-1/2	9	12
			S-135	0.430	3.640	NC46	6-1/4	2-1/4	9	12
		EU	E-75	0.430	3.640	NC50	6-5/8	3-5/8	9	12
			X-95	0.430	3.640	NC50	6-5/8	3-1/2	9	12
			G-105	0.430	3.640	NC50	6-5/8	3-1/2	9	12
			S-135	0.430	3.640	NC50	6-5/8	3	9	12
5	19.50	IEU	E-75	0.362	4.276	NC50	6-5/8	3-3/4	9	12
			X-95	0.362	4.276	NC50	6-5/8	3-1/2	9	12
			G-105	0.362	4.276	NC50	6-5/8	3-1/4	9	12
			S-135	0.362	4.276	NC50	6-5/8	2-3/4	9	12
			E-75	0.362	4.276	5-1/2 FH	7	3-3/4	10	12
			X-95	0.362	4.276	5-1/2 FH	7	3-3/4	10	12
			G-105	0.362	4.276	5-1/2 FH	7	3-3/4	10	12
			S-135	0.362	4.276	5-1/2 FH	7-1/4	3-1/2	10	12
	25.60	IEU	E-75	0.500	4.000	NC50	6-5/8	3-1/2	9	12
			X-95	0.500	4.000	NC50	6-5/8	3	9	12
			G-105	0.500	4.000	NC50	6-5/8	2-3/4	9	12
			S-135	0.500	4.000	NC50	6-5/8	2-3/4	9	12
			E-75	0.500	4.000	5-1/2 FH	7	3-1/2	10	12
			X-95	0.500	4.000	5-1/2 FH	7	3-1/2	10	12
			G-105	0.500	4.000	5-1/2 FH	7-1/4	3-1/2	10	12
			S-135	0.500	4.000	5-1/2 FH	7-1/4	3-1/4	10	12
5-1/2	21.90	IEU	E-75	0.361	4.778	5-1/2 FH	7	4	10	12
			X-95	0.361	4.778	5-1/2 FH	7	3-3/4	10	12
			G-105	0.361	4.778	5-1/2 FH	7-1/4	3-1/2	10	12
			S-135	0.361	4.778	5-1/2 FH	7-1/2	3	10	12
	24.70	IEU	E-75	0.415	4.670	5-1/2 FH	7	4	10	12
			X-95	0.415	4.670	5-1/2 FH	7-1/4	3-1/2	10	12
			G-105	0.415	4.670	5-1/2 FH	7-1/4	3-1/2	10	12
			S-135	0.415	4.670	5-1/2 FH	7-1/2	3	10	12
6-5/8	25.20	IEU	E-75	0.330	5.965	6-5/8 FH	8	5	10	13
			X-95	0.330	5.965	6-5/8 FH	8	5	10	13
			G-105	0.330	5.965	6-5/8 FH	8-1/4	4-3/4	10	13
			S-135	0.330	5.965	6-5/8 FH	8-1/2	4-1/4	10	13
	27.70	IEU	E-75	0.362	5.901	6-5/8 FH	8	5	10	13
			X-95	0.362	5.901	6-5/8 FH	8-1/4	4-3/4	10	13
			G-105	0.362	5.901	6-5/8 FH	8-1/4	4-3/4	10	13
			S-135	0.362	5.901	6-5/8 FH	8-1/2	4-1/4	10	13