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DRILL PIPE
Drill pipe is heavy, seamless pipe which provide rotation for circulating the drilling fluid. The pipe helps the drilling fluid to be pumped back up the annulus. The annulus of an oil well is the space between the casing and the piping or any immediate space between any casing and tubing surrounding it. The Annulus helps in the easy circulation of the fluid in the well. The pipe is subject to axial tension as high torque is required for rotating the down-hole assembly and drilling the fluid and circulating it. All this creates a large amount of stress on the drill pipe; hence the OCTG pipe should be extremely strong.
These drill pipe is used only at the drilling rigs and they are available in different sizes and different qualities. The quality differs based on the grade of strength, weight and length of the pipe. The OCTG Drill Pipe is sturdy steel pipe which is required to meet the standards of API 5DP and API SPEC 7-1.
Application: Drill pipe is for exploration and development of oil and gas wells.
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
DRILL PIPE
Drill pipe is heavy, seamless pipe which provide rotation for circulating the drilling fluid. The pipe helps the drilling fluid to be pumped back up the annulus. The annulus of an oil well is the space between the casing and the piping or any immediate space between any casing and tubing surrounding it. The Annulus helps in the easy circulation of the fluid in the well. The pipe is subject to axial tension as high torque is required for rotating the down-hole assembly and drilling the fluid and circulating it. All this creates a large amount of stress on the drill pipe; hence the OCTG pipe should be extremely strong.
These drill pipe is used only at the drilling rigs and they are available in different sizes and different qualities. The quality differs based on the grade of strength, weight and length of the pipe. The OCTG Drill Pipe is sturdy steel pipe which is required to meet the standards of API 5DP and API SPEC 7-1.
Application: Drill pipe is for exploration and development of oil and gas wells.
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
API and ISO are the standards followed by the oil and gas industry with regards to OCTG Casing and Tubing products. The Industry standards for OCTG casing and tubing are:
Specification for Casing and Tubing is API 5CT
Specification for Drill Pipe is API 5DP
Steel pipes can be used as casing and tubing for petroleum and natural gas industries wells.
These industry standards define the method of manufacturing OCTG, the type and length for the joints used, the thickness of the walls, their weight, steel grade quality, chemical properties, tensile properties, etc.
Standard: API SPEC 5DP
Steel Grade: E75、X95、G105、S135
OD Range : 60.3mm, 73mm, 88.9mm, 101.6mm, 114.3mm, 127mm, 139.7mm
Range of Thickness: 6.5mm to 12.7mm, or cutomized
Connection threads: NC26, NC31, NC38, NC40, NC46, NC50, 5 1/2FH.6 5/8FH.
Internal Upset: IU, EU, IEU
Length: R1, R2, R3
Sizes
D | normal weight | steel grade | t | upset ends | tool joint designation | ||
in | mm | in | mm | ||||
2 3/8 | 60.32 | 6.65 | E,X,G | 0.280 | 7.11 | EU | NC26 |
2 7/8 | 73.02 | 10.40 | E,X,G,S | 0.362 | 9.19 | EU | NC31 |
3 1/2 | 88.90 | 9.50 | E | 0.254 | 6.45 | EU | NC38 |
13.30 | E,X,G,S | 0.368 | 9.35 | EU | NC38 | ||
13.50 | E,X,G | 0.449 | 11.40 | EU | NC38 | ||
S | 0.449 | 11.40 | EU | NC40 | |||
4 | 101.60 | 14.00 | E,X,G,S | 0.330 | 8.38 | IU | NC40 |
E,X,G,S | 0.330 | 8.38 | EU | NC46 | |||
4 1/2 | 114.30 | 13.75 | E | 0.271 | 6.88 | IU | NC46 |
13.75 | E | 0.271 | 6.88 | EU | NC46 | ||
16.60 | E,X,G,S | 0.337 | 8..56 | EU | NC50 | ||
20.00 | E,X,G,S | 0.430 | 10.92 | EU | NC50 | ||
16.60 | E,X,G,S | 0.337 | 8.56 | IEU | NC46 | ||
20.00 | E,X,G,S | 0.430 | 10.92 | IEU | NC46 | ||
5 | 127.00 | 19.50 | E,X,G,S | 0.362 | 9.19 | IEU | NC50 |
19.50 | E,X,G,S | 0.362 | 9.19 | IEU | 5 1/2 FH | ||
25.60 | E,X,G | 0.500 | 12.70 | IEU | NC50 | ||
25.60 | E,X,G,S | 0.500 | 12.70 | IEU | 5 1/2 FH | ||
5 1/2 | 139.70 | 21.90 | E,X,G,S | 0.361 | 9.17 | IEU | 5 1/2 FH |
24.70 | E,X,G,S | 0.415 | 10.54 | IEU | 5 1/2 FH | ||
6 5/8 | 168.28 | 25.20 | E,X,G,S | 0.330 | 8.38 | IEU | 6 5/8 FH |
27.70 | E,X,G,S | 0.362 | 9.19 | IEU | 6 5/8 FH |
Note: EU— external upset; IU— internal upset; IEU—internal & external upset.
Dimension Tolerances
Tolerance | ||
D Drill-pipe-body Outside Diameter | Pipe body | D≤101.60mm,±0.79mm |
D≥114.30mm,+1.0%, -0.5%D | ||
Drill-pipe-body behind the Meu | D≥60.32~≤88.90mm,+2.38%, -0.79%D | |
D>88.90~≤127.00mm,+2.78mm, -0.75%D | ||
D>127.00~≤168.28mm,+3.18mm,-0.75%D | ||
Wall Thickness | 0, -12.5%t |
API and ISO are the standards followed by the oil and gas industry with regards to OCTG Casing and Tubing products. The Industry standards for OCTG casing and tubing are:
Specification for Casing and Tubing is API 5CT
Specification for Drill Pipe is API 5DP
Steel pipes can be used as casing and tubing for petroleum and natural gas industries wells.
These industry standards define the method of manufacturing OCTG, the type and length for the joints used, the thickness of the walls, their weight, steel grade quality, chemical properties, tensile properties, etc.
Standard: API SPEC 5DP
Steel Grade: E75、X95、G105、S135
OD Range : 60.3mm, 73mm, 88.9mm, 101.6mm, 114.3mm, 127mm, 139.7mm
Range of Thickness: 6.5mm to 12.7mm, or cutomized
Connection threads: NC26, NC31, NC38, NC40, NC46, NC50, 5 1/2FH.6 5/8FH.
Internal Upset: IU, EU, IEU
Length: R1, R2, R3
Sizes
D | normal weight | steel grade | t | upset ends | tool joint designation | ||
in | mm | in | mm | ||||
2 3/8 | 60.32 | 6.65 | E,X,G | 0.280 | 7.11 | EU | NC26 |
2 7/8 | 73.02 | 10.40 | E,X,G,S | 0.362 | 9.19 | EU | NC31 |
3 1/2 | 88.90 | 9.50 | E | 0.254 | 6.45 | EU | NC38 |
13.30 | E,X,G,S | 0.368 | 9.35 | EU | NC38 | ||
13.50 | E,X,G | 0.449 | 11.40 | EU | NC38 | ||
S | 0.449 | 11.40 | EU | NC40 | |||
4 | 101.60 | 14.00 | E,X,G,S | 0.330 | 8.38 | IU | NC40 |
E,X,G,S | 0.330 | 8.38 | EU | NC46 | |||
4 1/2 | 114.30 | 13.75 | E | 0.271 | 6.88 | IU | NC46 |
13.75 | E | 0.271 | 6.88 | EU | NC46 | ||
16.60 | E,X,G,S | 0.337 | 8..56 | EU | NC50 | ||
20.00 | E,X,G,S | 0.430 | 10.92 | EU | NC50 | ||
16.60 | E,X,G,S | 0.337 | 8.56 | IEU | NC46 | ||
20.00 | E,X,G,S | 0.430 | 10.92 | IEU | NC46 | ||
5 | 127.00 | 19.50 | E,X,G,S | 0.362 | 9.19 | IEU | NC50 |
19.50 | E,X,G,S | 0.362 | 9.19 | IEU | 5 1/2 FH | ||
25.60 | E,X,G | 0.500 | 12.70 | IEU | NC50 | ||
25.60 | E,X,G,S | 0.500 | 12.70 | IEU | 5 1/2 FH | ||
5 1/2 | 139.70 | 21.90 | E,X,G,S | 0.361 | 9.17 | IEU | 5 1/2 FH |
24.70 | E,X,G,S | 0.415 | 10.54 | IEU | 5 1/2 FH | ||
6 5/8 | 168.28 | 25.20 | E,X,G,S | 0.330 | 8.38 | IEU | 6 5/8 FH |
27.70 | E,X,G,S | 0.362 | 9.19 | IEU | 6 5/8 FH |
Note: EU— external upset; IU— internal upset; IEU—internal & external upset.
Dimension Tolerances
Tolerance | ||
D Drill-pipe-body Outside Diameter | Pipe body | D≤101.60mm,±0.79mm |
D≥114.30mm,+1.0%, -0.5%D | ||
Drill-pipe-body behind the Meu | D≥60.32~≤88.90mm,+2.38%, -0.79%D | |
D>88.90~≤127.00mm,+2.78mm, -0.75%D | ||
D>127.00~≤168.28mm,+3.18mm,-0.75%D | ||
Wall Thickness | 0, -12.5%t |
Chemical Composition, Mass Fraction(%)
steel grade | P (%) | S (%) | |
≤ | ≤ | ||
Pipe body | E | 0.030 | 0.020 |
X, G, S | 0.020 | 0.015 | |
Tool Joint | 0.020 | 0.015 |
Mechanical Properties
steel grade | tensile properties | (21℃±3℃) Charpy V-notch longitudinal absorbed-energy (21℃±3℃) | |||||
yield strength (Mpa) | tensile strength (Mpa) | elongation(%) | 10*10 average(min) | 10*7.5 average(min) | 10*5 average(min) | ||
min | max | min | |||||
E | 517 | 724 | 689 |
| 54(47) | 43(38) | 30(26) |
X | 655 | 862 | 724 | ||||
G | 724 | 931 | 793 | ||||
S | 931 | 1138 | 1000 |
Remarks: k—constant, equal to 1944 (62500); A—cross-sectional area of tensile specimen, mm2(in2); Udp—specified minimum tensile strength, MPa(Ib/in2)
Chemical Composition, Mass Fraction(%)
steel grade | P (%) | S (%) | |
≤ | ≤ | ||
Pipe body | E | 0.030 | 0.020 |
X, G, S | 0.020 | 0.015 | |
Tool Joint | 0.020 | 0.015 |
Mechanical Properties
steel grade | tensile properties | (21℃±3℃) Charpy V-notch longitudinal absorbed-energy (21℃±3℃) | |||||
yield strength (Mpa) | tensile strength (Mpa) | elongation(%) | 10*10 average(min) | 10*7.5 average(min) | 10*5 average(min) | ||
min | max | min | |||||
E | 517 | 724 | 689 |
| 54(47) | 43(38) | 30(26) |
X | 655 | 862 | 724 | ||||
G | 724 | 931 | 793 | ||||
S | 931 | 1138 | 1000 |
Remarks: k—constant, equal to 1944 (62500); A—cross-sectional area of tensile specimen, mm2(in2); Udp—specified minimum tensile strength, MPa(Ib/in2)
Hunan Gaoxing Steel Development Zone, No.1888 Purui South Rd, Wangcheng District,Changsha, Hunan, China
Tel: 0086-0731-88739521