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Drill Pipe

Keywords: Seamless, SMLS, Electric Resistance Welded , ERW, Drill Pipe

Size: OD: 60.32mm ~ 168.28mm； WT: 7.11mm ~ 9.19mm； LENGTH: R1, R2, R3

Standard & Grade: API 5DP E 75/X 95/G 105/S 135

Ends: Beveled, Square Cut

Packing: Protection Caps in Both End, Waterproof Paper Wrapped, Two Tags

Usage: For Conveying Gas, Water and Oil Either in the Oil Or Natural Gas Industries

Upset Style: IU, EU, IEU

Connection: NC26 - NC50, 5 1/2FH, 6 5/8FH

Internal Coating: TK34,TC2000, Arnco 100XT, 200XT, 300XT SEND EMAIL TO US

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FAQ

What is Drill Pipe?

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 (Range 2). Longer lengths, up to 45 feet, exist (Range 3).

How to Work with Drilling Pipe?

The drilling tool is connected drill rod for transferring power. The drill string is usually part are: drill, drill collars, drilling pipe, stabilizers, special connectors and Kelly. The basic role of the drill string are: (1)control the drill bit; (2) imposed WOB; (3) transmission of power; (4) transporting drilling fluid; (5) special operations: extrusion of cement, handling underground accidents.

Drilling pipe is trailing with screw thread for connecting the drilling rig located at the bottom of surface drilling equipment and mill equipment or bottom outlet device. The purpose is to drill the drilling mud delivered to the drill bit, and drill with the increase, decrease or rotating bottom outlet means. Drill pipes must be able to withstand great external pressure, twisting, bending and vibration. In the mining and oil and gas refining process, the drill pipe can be used multiple times.

Drill Pipe: Drill pipe includes pipe body and tool joints(box and pin) welded together, used to connect drilling rig surface equipment and bottom equipment or bottom hole equipment. Drill pipe can bear heavy internal and external pressure, and twist, bend and vibration which can be used more than one time during oil or gas production.

Drill pipes are steel tube fitted with threaded ends called tool joints, which are commonly used in tension in the top part of the drill string to pump fluid and transmit torque to the bit.

Standard: Drill pipe

Grade: E75, X95, G105, S135

The wear-resistant belt of tool joint: Arnco 100XT, 200XT, 300XT, 400XT

Internal coating drill pipe: TK34, DPC, TC2000, TC3000

Usage: Mine blasting, water well drilling, geothermal wells drilling, fore poling, coal and nonferrous metal mining projects, etc.

API 5DP Specification is under the jurisdiction of the API Committee on Standardization ofTubular Goods. The purpose of this specification is to provide standards for drill pipe suitable for use in drilling and producing operations.

Special Processes of API 5DP Specification for Drill Pipe Special Processes are the final operations which are performed during pipe manufacturing that affect attribute compliance required in this document (except chemistry and dimensions). The applicable special processes are heat treatment, nondestructive testing, and, if applicable, cold finishing

Dimension:

Size designation	Calculated weight	Tool joint designation	Calculated weight		grade	Wall thickness		Upset ends
in	Calculated weight	Tool joint designation	1b/ft	Kg/m	grade	in	mm	Upset ends
2 3/8	6.65	NC26	6.26	9.32	E.X.G.S	0.28	7.11	EU
2 7/8	10.4	NC31	9.72	14.48	E.X.G.S	0.362	9.19	EU
3 1/2	13.3	NC38	12.31	18.34	E.X.G.S	0.368	9.35	EU
3 1/2	15.5	NC38,NC40	14.63	21.79	E.X.G.S	0.449	11.4	EU
4	14	NC40,NC46	12.93	19.26	E.X.G.S	0.33	8.38	IU,EU
4 1/2	16.6	NC46,NC50	14.98	22.31	E.X.G.S	0.337	8.56	EU,IEU
4 1/2	20	NC46,NC50	18.69	27.84	E.X.G.S	0.43	10.92	EU,IEU
5	19.5	NC50,NC52	17.93	26.71	E.X.G.S	0.362	9.19	IEU
5	25.6	NC50,5 1/2FH	24.03	35.79	E.X.G.S	0.5	12.7	IEU
5 1/2	21.9	5 1/2FH	19.81	29.51	E.X.G.S	0.361	9.17	IEU
5 1/2	24.7	5 1/2FH	22.54	33.57	E.X.G.S	0.415	10.54	IEU
6 5/8	25.2	6 5/8FH	22.19	33	E.X.G.S	0.33	8.387	IEU
6 5/8	27.7	6 5/8FH	24.21	41	E.X.G.S	0.362	9.19	IEU

Chemical Composition(%):

Grade	Chemical composition
Grade	P	S
E75	<0.015	<0.003
X95	<0.015	<0.003
G105	<0.015	<0.003
S135	<0.015	<0.003
Tool joint	<0.015	<0.003

Mechanical Properties:

Pipe body	Grade	Yield strength				Tensile strength		Elongation	Hardness		Full size charpy impact test(J)
		min		max		min			Hardness		min
		Psi	MPa	Psi	MPa	Psi	MPa		HBW	HRC	Average	Single
	E75	75000	517	105000	724	100000	689	625000A0.2/ U0.9	-	-	80	65
	X95	95000	655	125000	862	105000	724		-	-	80	65
	G105	105000	724	135000	931	115000	793		-	-	80	65
	S135	135000	931	165000	1138	145000	1000		-	-	80	65
Weld zone	Tool joint	120000	827.4	-	-	140000	965.3	=13%	=285	-	80	65
	E75	75000	517	-	-	100000	689		-	?37	40	27
	X95	88000	609	-	-	103000	712		-	?37	40	27
	G105	95000	655	-	-	105000	724		-	?37	40	27
	S135	105000	724	-	-	115000				?37	40	27

Anti-Corrosion Water Based Paint

What is OCTG and what are its main components?

OCTG stands for Oil Country Tubular Goods. It is a family of seamless or welded steel pipes specifically designed for use in oil and gas wells. OCTG is essential for drilling, completing, and producing from a well. The three primary components are:
Casing: The structural "backbone" of the well. It is run into the drilled hole to prevent the wellbore from collapsing and to isolate different underground formations (e.g., freshwater zones from oil/gas zones).
Tubing: The conduit placed inside the casing. It serves as the channel through which oil or gas is brought to the surface during production.
Drill Pipe: The heavy, thick-walled pipe used to transmit drilling fluid to the drill bit and to rotate the bit during the drilling process.

What steel grades do you supply, and what do they mean?

We supply a comprehensive range of API 5CT standard steel grades, each designed for specific well conditions. The grade indicates the minimum yield strength (in ksi) and the material's properties.
Group 1 (Standard Grades):
H40, J55, K55: General-purpose grades for shallow to medium-depth wells with low to moderate pressure. K55 is commonly used for surface casing.
Group 2 (Higher Strength):
N80 (Type 1 & 2): A versatile, high-strength grade suitable for a wide range of applications, including intermediate and production casing.
L80 (Type 1, 9Cr, 13Cr): Designed for sour service environments (containing H₂S). L80-13Cr offers superior corrosion resistance.
Group 3 (High Performance):
C90, T95: Used in high-pressure, high-temperature (HPHT) wells and sour service applications.
P110, Q125: High-strength grades for deep wells and high-pressure environments where maximum burst and collapse resistance are required.

What types of connections (threads) are available?

The connection is a critical component of any OCTG string. We offer both standard API connections and advanced Premium Connections.
API Connections:
Short Round Thread (STC): A simple, cost-effective connection for shallow wells.
Long Round Thread (LTC): Similar to STC but with a longer thread for slightly better performance.
Buttress Thread (BTC): Provides high tensile strength and is suitable for deeper, heavier wells.
Premium Connections (Non-API):
These are engineered for extreme conditions, offering superior gas-tight sealing, high tensile strength, and excellent fatigue resistance. They are essential for HPHT wells, deepwater applications, and complex well geometries. We can supply various premium connection types based on your specific project requirements.

How do you ensure the quality and integrity of the pipes?

We implement a rigorous multi-stage quality control process to ensure every pipe meets the required specifications:
Chemical Composition Analysis: Verifying the steel grade's elemental makeup.
Mechanical Property Testing: Including tensile, yield, hardness, and impact tests.
Hydrostatic Testing: Every pipe is pressure-tested to ensure it can withstand specified internal pressures without leaking.
Non-Destructive Testing (NDT): We utilize advanced NDT methods such as Ultrasonic Testing (UT) and Electromagnetic Testing (ET) to detect any internal or surface imperfections.
Dimensional Inspection: Precise measurement of outside diameter (OD), wall thickness, weight, and length.

What is your typical lead time and packaging for export?

Lead Time: For standard API grades and sizes, our lead time is typically 15-30 days after receiving the deposit and final order confirmation. For specialized grades or premium connections, the timeline may be longer.
Packaging: To ensure safe ocean transport, all OCTG products are securely packed. Threads are protected with steel or plastic protectors, and pipes are bundled with steel straps. We can also apply anti-corrosion oil or varnish and use wooden crates for extra protection as per customer requirements.

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Tags : API 5DP drill pipe , E75 drill pipe , X95 drill pipe , G105 drill pipe , S135 drill pipe , heavy weight drill pipe , drill string pipe , NC50 drill pipe , FH drill pipe , seamless drill pipe , directional drilling pipe , deep well drill pipe , R2 drill pipe