Top Quality Special Threaded Drillpipe With China Manufacture Price For Drilling Rig
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1. In the presence of thread crossover coupling, it can connect with API drilling tool or with existing drilling equipment.
2. The drilling tool can be connected by sleeve hydraulic tongs during drilling.
3. Inner and outer shoulders and barb thread make the actual joint efficiency highest, and the joint’s connection strength is larger than tube body, and service life is longer than API drilling tool. 4. The design of inner and outer shoulders and barb thread makes the drilling tool have higher bending resistance, thread gluing resistance and sealing property under bending than APE drilling tool, and adapt to drilling horizontal wells. 5. Due to barb buttress thread, -3 degrees of bearing surface angle, 20 degrees of guiding surface angle, and top and bottom paralleling to drilling tool pipe body, it has good fastening performance.
6. Inner and outer shoulders make threaded connection stress more reasonable than threaded connection of API drilling tool, and eliminate stress mutation of root of male thread as the end of male thread has no inner shoulder contact during threaded connection of API drilling tools. Therefore, the drilling tool avoids root cracking of male thread frequently occurred in API drilling tools. 7. It has no weld seam, improves connecting performance and corrosion resistance of the joint, and has the best design of hydrothion resisting drilling tool.
8. As threaded connection external diameter of the drilling tool is less than that of API (tool joint), the drilling tool more facilitates drilling of slimhole and small-hole deep well.
9. As threaded connection external diameter of the drilling tool is less than that of API (tool joint), it greatly reduces friction between threaded connection part and tube wall, and prolongs the service life.
10. As threaded connection external diameter of the drilling tool is less than that of API (tool joint) and the drilling tool has no internal upset, the drilling tool has larger internal diameter than API drilling tool, and facilitates slurry circulation of drilling process.
11. Internal upset of API drilling tool makes pipeline inner wall generate mutation, so that slurry has turbulence in internal upset part when circularly flowing in drilling pipeline, and tube wall at internal upset part is often pierced. The drilling tool has inner and outer shoulders, so the pipeline inner wall is flat, and the drilling tool eliminates turbulence caused by circulation of slurry in drilling pipeline in drilling process, and piercing of tube wall generated by turbulence when the slurry circulates in drilling pipeline.
Structural Features
1. Patent structural design, ensuring maximum performance of the joint.
2. Barb buttress thread, -3 degrees of bearing surface angle,20 degrees of guiding surface angle, and top and bottom paralleling to drilling tool pipe body.
3. Thread is directly processed onto the tube body, so it has no weld seam and heat affected zone.
4. Double shoulder thread design, simultaneous contact of inner and outer shoulders.
5. External upset, no internal upset on inner wall of the tube.
|
O.D.of pipe body(in)
|
Norminal
Weight(1b/ft)
|
Steel grade
|
Wall thickness(in)
|
I.D.(in)
|
Collapsing pressure(Map)
|
Yield internal pressure(Mpa)
|
Joint strength(KN)
|
|
2-3/8
|
6.65
|
E
|
0.280
|
1.815
|
107.5
|
106.7
|
614.0
|
| 6.65 |
X |
0.280 |
1.815 |
136.2 |
135.1 |
778.6 |
| 6.65 |
G |
0.280 |
1.815 |
150.6 |
149.3 |
863.1 |
| 6.65 |
S |
0.280 |
1.815 |
193.6 |
192.0 |
1107.8 |
|
2-7/8
|
10.40
|
E
|
0.362
|
2.151
|
113.8
|
114.0
|
952.1
|
| 10.40 |
X |
0.362 |
2.151 |
144.2 |
144.3 |
1210.2 |
| 10.40 |
G |
0.362 |
2.151 |
159.3 |
159.6 |
1334.8 |
| 10.40 |
S |
0.362 |
2.151 |
204.9 |
205.1 |
1717.4 |