API Thread Heavy Weight Drill Pipe
Size:Outer Diameter: 2 7/8” – 6 5/8”
Lengths: Range 2 and Range 3
Pipe Standard:API 5CT and 5B PSL1/PSL2 J55,K55,N80-1,N80-Q,API 5CT and 5B L80-1,C90, C95,T95, P110, Q125
End Finishes:Internal Upset, External Upset, Plain End Upset, Non Upset
Tool Joint type:NC38、NC46、NC50、5-1/2 FH
Classification :
PRODUCT DETAILS
Description
A Heavy Weight Drill Pipe (HWDP) looks like a normal drill pipe except for an upset centered along the tube which helps to prevent excessive buckling.
HWDP is used as a transitional stiffness section, typically between the stiff and rigid drill collars and the relatively light and flexible drill pipe joints to reduce fatigue failures directly above the bottom hole assembly.
Its wall thickness is up to 3 times that of a similar-sized normal drill pipe to add additional weight to the bit.
HWDP is used most commonly in directional drilling because it bends more easily and helps to control torque and fatigue in high-angle operations.
HWDP is manufactured in accordance with API Spec. 7/7-1 guidelines.
Steel Grade:
Integral HWDP : AISI 4145HM
Welded HWDP : AISI 1340 pipe body, AISI 4140HM tool joint
Sizes Range:
Outer Diameter: 2 7/8” – 6 5/8”
Weight Range: 6.27#/FT through 27.72#/FT
Lengths: Range 2 and Range 3
End Finishes: Internal Upset, External Upset, Plain End Upset, Non Upset
Tool Joint type：NC38、NC46、NC50、5-1/2 FH
Specification&Standard
Standard heavy weight drill pipe
|
Size(in) |
O.D. (in) |
I.D. (in) |
Tool Joint O.D. (in) |
Tool Joint I.D. (in) |
Connection |
Max.elevator diameter (in) |
Central upset dia. (in) |
Min.drift dia.size(in) |
|
3 1/2 |
3 1/2 |
2 1/4 |
4 3/4 |
2 1/4 |
NC38 |
3 7/8 |
4 |
2 |
|
2 1/16 |
2 1/16 |
113/16 |
||||||
|
4 |
4 |
2 1/2 |
5 1/4 |
2 1/2 |
NC40 |
4 3/16 |
4 1/2 |
2 1/4 |
|
2 9/16 |
2 9/16 |
2 5/16 |
||||||
|
4 1/2 |
4 1/2 |
2 11/16 |
6 1/4 |
2 11/16 |
NC46 |
4 11/16 |
5 |
2 7/16 |
|
2 3/4 |
2 3/4 |
2 1/2 |
||||||
|
2 13/16 |
2 13/16 |
2 9/16 |
||||||
|
5 |
5 |
3 |
6 5/8 |
3 |
NC50 |
5 1/8 |
5 1/2 |
2 3/4 |
|
5 1/2 |
5 1/2 |
3 1/4 |
7 |
3 1/4 |
5 1/2 FH |
5 11/16 |
6 |
3 |
|
3 3/8 |
3 3/8 |
3 1/8 |
||||||
|
3 7/8 |
3 7/8 |
3 5/8 |
||||||
|
4 |
4 |
3 3/4 |
||||||
|
6 5/8 |
6 5/8 |
4 |
8 |
4 |
65/8 FH |
6 15/16 |
7 1/8 |
3 3/4 |
|
4 1/2 |
4 1/2 |
4 1/4 |
||||||
|
5 |
5 |
4 3/4 |
Spiral heavy weight drill pipe
|
Spiral heavy weight drill pipe |
||||||||
|
Specification mm |
Tube |
Joint |
||||||
|
ID mm |
Elevator upset mm |
elevator groove |
Screw in diameter mm |
Spiral groove depth mm |
Thread Type |
OD mm |
ID mm |
|
|
88.9(3 1/2) |
54 |
92.1 |
88.9 |
101.6 |
9.5 |
NC38 |
120.6 |
54 |
|
114.3(4 1/2) |
69.8 |
117.5 |
114.3 |
127 |
12.7 |
NC46 |
158.8 |
69.8 |
|
127.0(5) |
76.2 |
130.2 |
127 |
139.7 |
12.7 |
NC50 |
165.1 |
76.2 |
OCTL Heavy Weight Drill Pipe is manufactured in compliance with API 7-1 and in API RP7G.
| Type | Grade | Yield Strength |
Tensile Strength | Elongation | Hardness | |
| Ksi | ksi | % | ||||
| Standard Welded | Tool Joint | AISI4137H/4145H | 120 Min. | 140 Min. | 13 | Min 285 HBW |
| Tube | Standard (AISI 1340) |
55 Min. | 95 Min. | 18 | - | |
| DPM-HW95 | 95 Min. | 105 Min. | 13 | - | ||
| DPM-HW105 | 105 Min. | 130 Min. | 13 | - | ||
| Standard Integral | - | AISI4137H/4145H | 110 Min. | 140 Min. | 13 | Min 285 HBW |
| H₂S Welded | Tool Joint | Standard (AISI 4137H/4145H) |
100 Min. | 120 Min. | 13 | Min 285 HBW |
| Controlled Yield (AISI 4137H/4145H) |
100 to 115 | 120 Min. | 13 | Max Avg 28HRC | ||
| SS Grade | 110 to 125 | 125 to 145 | 13 | Max Avg 30HRC | ||
| Tube | DPM-65MS | 65 Min. | 95 Min. | 18 | - | |
| DPM-HW90SS | 90 to 105 | 100 Min. | 13 | Max Avg 26HRC | ||
| DPM-IRP | 55 Min. | 95 Min. | 18 | Max Avg 22HRC | ||
| H₂S Integral | - | DPM-110SS | 110 to 125 | 125 to 145 | 13 | Max Avg 30HRC |
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