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API SPEC 5DP specifies the technical delivery conditions for steel drill-pipes with upset pipe-body ends and weld-on tool joints for use in drilling and production operations in petroleum and natural gas industries for three product specification .
levels (PSL-1,PSL-2 and PSL-3).PS-1 specifies wall thickness, impact strength, and yield strength requirements specific to the material grade.Specification levels PL-2/PL-3 have additional mandatory requirements.
Drill pipe is seamless steel pipe that composes around 95% of the length of a drill string. For clarity, a drill string is what is used to actually drill into the ground to extract resources. The drill seamless pipe is hollow, which allows drilling fluid to flow freely throughout the pipe and the pumping process to be completed successfully.
● Drill Pipe
● 2-3/8" to 7-5/8" OD, Range 2 and 3
● Heavy Weigh
● 2-3/8" to 6-5/8" OD, Range 2 and 3
● Drill Collars
● 2-7/8" to 14"
Grades: E75, X95, G105, S135
Connection threads:NC26, NC31, NC38, NC40, NC46, NC50, 5 1/2FH.6 5/8FH.
Internal Upset: IU, EU, IEU
Heavy weight drill pipe is a medium-weight drilling pipe, (referred standards in API SPEC 7-1). It has bigger wall thickness than common drilling pipe and smaller than drill collar.
|
Size designation |
Calculated weight |
Tool joint designation |
Calculated weight |
grade |
Wall thickness |
Upset ends |
||
|
in |
1b/ft |
Kg/m |
in |
mm |
||||
|
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 |
|
Item |
Tolerance |
|
|
Pipe Body |
OD≤101.6mm |
+0.79mm |
|
OD≥114.3mm |
+1% -0.5% |
|
|
Single Lengths |
-12.5% |
|
|
Weight |
+6.5% -3.5% |
|
Chemical Composition & Mechanical Properties
|
Grade |
Chemical Composition |
Mechanical Properties |
||
|
P |
S |
Yield Strength(Mpa) |
Tensile Strength(Mpa) |
|
|
E-75 |
≤0.020 |
≤0.015 |
517-724 |
≥689 |
|
X-95 |
≤0.020 |
≤0.015 |
655-862 |
≥724 |
|
G-105 |
≤0.020 |
≤0.015 |
724-931 |
≥793 |
|
S-135 |
≤0.020 |
≤0.015 |
931-1138 |
≥1000 |
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Main Product:
Seamless Steel Pipe,
Welded Steel Pipe,
Casing and Tubing,
Carbon Steel Pipe,
Stainless Steel Pipe,
Alloy Steel Pipe
