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| Categories | Drill String Components |
|---|---|
| Model Number: | All types |
| Certification: | API 7-1 |
| Place of Origin: | China |
| MOQ: | 1 pc |
| Price: | USD500-10000/pc |
| Payment Terms: | L/C, T/T, Western Union, MoneyGram |
| Supply Ability: | 800 pcs per month |
| Delivery Time: | 30 work days |
| Packaging Details: | In Bundles |
| Product Name: | API 7-1 Drilling Rig HWDP Integral Spiral Heavy Weight Drill Pipe |
| Keywords: | HWDP Heavy Weight Drill Pipe |
| Application: | Oil Well Drilling |
| Outer Diameter: | 2 3/8" - 6 5/8" |
| Tool Joint: | NC, IF, REG, FH |
| Hardbanding: | Arnco 100XT, Arnco 300XT, BoTn 1000, BoTn 3000 |
| Company Info. |
| Dongying Oilman Machinery Equipment Co.,Ltd. |
| Verified Supplier |
| View Contact Details |
| Product List |
Description of heavy weight drill pipe
Integral heavy weight drill pipe is manufactured from AISI 4142H-4145H modified drill collar material according to SY/T 5146-1997,thick-walled pipe called integral heavy weight drill pipe was developed to provided a gradual transition from the heavy drill collars to the relatively light weight drill pipe. This intermediate weight pipe has a wall thickness of approximately, and helps prevent stress concentration at the top of the drill collars. It also allows you to drill at higher rpms, reducing torque and differential pressure sticking. It is intended primarily for directional drilling. Because it bends easily, it simplifies directional control and minimizes connection fatigue problems common to high angle or horizontal drilling. The reduced number of pipe failures and increased drill stem service also make it appropriate for some straight-hole applications.
Specifications of heavy weight drill pipe
| Integral heavy weight drill pipe | ||||||||
| Size | Outer diameter | Inside diameter | Joint outer diameter | Joint inside diameter | Connecting thread | Slip max. diameter | Upset middle diameter | Min. drift diameter |
| 3 1/2 | 3 1/2 | 2 1/4 | 4 3/4 | 2 1/4 | NC38 | 3 7/8 | 4 | 2 |
| 2 1/16 | (4 7/8, 5) | 2 1/16 | 1 13/16 | |||||
| 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 | (7 1/4, 7 1/2) | 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 | 6 5/8 FH | 6 15/16 | 7 1/8 | 3 3/4 |
| 4 1/2 | (8 1/4, 8 1/2) | 4 1/2 | 4 1/4 | |||||
| 5 | 5 | 4 3/4 | ||||||
| Spiral heavy weight drill pipe | ||||||||
| Specification mm | Tube | Joint | ||||||
| ID mm | Elevator upset mm | elevator groove mm | 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 |
| Yield strength | Tensile Strength | Elongation | HB | Charpy impact | ||||
| MPa | Psi | MPa | Psi | A% | Akv J | |||
| ≥758 | ≥110000 | ≥965 | ≥140000 | ≥13 | 285~341 | ≥54 | ||
If any needs, pls contact us freely:
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