ROSCHEN GROUP
| Supply Ability | 10000sets/M |
| Packaging Details | Bundle or Wooden Box |
| Brand Name | ROSCHEN |
| Model Number | 4 1/2inch |
| Certification | API |
| Place of Origin | CHINA |
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Product Specification
| Supply Ability | 10000sets/M | Packaging Details | Bundle or Wooden Box |
| Brand Name | ROSCHEN | Model Number | 4 1/2inch |
| Certification | API | Place of Origin | CHINA |
| High Light | Heavy Weight Drill Pipe ，Heavy Weight Drill Pipe 4 1/2” ，NC-46 Connection Heavy Weight Drill Pipe | ||
Heavy Weight Drill Pipe 4 1/2inch 41.8 Lb ft NC-46 Connection
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.
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.
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.
| Nominal Size (Tube OD) | Tube | Tool Joint (in) | ||||
| ID (in) | Elevator Upset | Center Upset | Connection Type & Size | OD (in) | ID (in) | |
| 2-7/8 | 1-1/2 | 2-15/16 | 3-5/16 | NC 26 (2-3/8 IF) | 3-3/8 | 1-1/2 |
| 3-1/2 | 2-1/16 | 3-7/8 | 4 | NC 38 (3-1/2 IF) | 4-3/4 (4-7/8,5) | 2-1/16 |
| 3-1/2 | 2-1/4 | 3-7/8 | 4 | NC 38 (3-1/2 IF) | 4-3/4 (4-7/8,5) | 2-1/4 |
| 4 | 2-9/16 | 4-3/16 | 4-1/2 | NC 40 (4FH) | 5-1/4 | 2-9/16 |
| 4 | 2-1/2 | 4-3/16 | 4-1/2 | NC 40 (4 FH) | 5-1/4 | 2-1/2 |
| 4-1/2 | 2-3/4 | 4-11/16 | 5 | NC 46 (4 IF) | 6-1/4 | 2-3/4 |
| 4-1/2 | 2-11/16 | 4-11/16 | 5 | NC 46 (4 IF) | 6-1/4 | 2-11/16 |
| 4-1/2 | 2-13/16 | 4-11/16 | 5 | NC 46 (4 IF) | 6-1/4 | 2-13/16 |
| 5 | 3 | 5-1/8 | 5-1/2 | NC 50 (4-1/2 IF) | 6-5/8 | 3 |
| 5-1/2 | 3-1/4 | 5-11/16 | 6 | 5-1/2 FH | 7 (7-1/4,7-1/2) | 3-1/4 |
| 5-1/2 | 3-3/8 | 5-11/16 | 6 | 5-1/2 FH | 7 (7-1/4,7-1/2) | 3-3/8 |
| 5-1/2 | 3-7/8 | 5-11/16 | 6 | 5-1/2 FH | 7 (7-1/4,7-1/2) | 3-7/8 |
| 5-1/2 | 4 | 5-11/16 | 6 | 5-1/2 FH | 7 (7-1/4,7-1/2) | 4 |
| 6-5/8 | 4 | 6-15/16 | 7-1/8 | 6-5/8 FH | 8 (8-1/4,8-1/2) | 4 |
| 6-5/8 | 4-1/2 | 6-15/16 | 7-1/8 | 6-5/8 FH | 8 (8-1/4,8-1/2) | 4-1/2 |
| 6-5/8 | 5 | 6-15/16 | 7-1/8 | 6-5/8 FH | 8 (8-1/4,8-1/2) | 5 |
| Standard Features | API Bore Back Box Connection | |||||
| API Stress Relief Grooved Pin | ||||||
| Cold Rolled Thread Roots | ||||||
| Phosphate coated connections | ||||||
| Options | Internal Plastic Coating | |||||
| Hardband Type especially on box and pin tool joint | ||||||
| Proprietary Connections | ||||||
| Make and Break Test | ||||||
| Protection | Pressed steel thread protectors | |||||
| Mill Test Certificates | Issued in accordance with API Spec 7/7-1 and API RP7G . | |||||
| Third Party Inspection can be performed on request at buyer’s care and expense. | ||||||
HWDP Specifications
Conventional Heavy Weight Drill Pipes come in two configurations, Welded and Integral.
The welded configuration is manufactured by friction welding of extra-long tool joints to a thick well tube while the integral configuration is machined from a solid bar of AISI4145H alloy steel.
An additional option is the Heavyweight Spiral Drill Pipe, which has spiral grooves cut into the external surface for reduced differential sticking and improved hole-cleaning.
Products are manufactured to API Spec.7/ 7-1 where applicable and can come customized with additional features and proprietary connections of leading manufacturers per your requirements.
Contact us to discuss your requirements.
For more information please contact:
Skype: ROSCHEN.TOOL , ROSCHEN_GROUP
WeChat: +86-137 6419 5009 ; +86-135 8585 5390
WhatsApp: +86-137 6419 5009 ; +86-135 8585 5390
Email: roschen@roschen.com ; roschen@roschen.net
Website: http://www.roschen.com ; http://www.roschen.net
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Exporter,Seller
Year Established:
1921
Total Annual:
5000-2000000
Employee Number:
100~500
Ecer Certification：
Verified Supplier
ROSCHEN GROUP ROSCHEN Group has the world class advanced equipment like 12000 tons forging, metal processing plant, heat treatment workshop, numerical control plant, Advanced five-axis machining center, etc. professional technical and skilled team to ensure mining, mine... ROSCHEN GROUP ROSCHEN Group has the world class advanced equipment like 12000 tons forging, metal processing plant, heat treatment workshop, numerical control plant, Advanced five-axis machining center, etc. professional technical and skilled team to ensure mining, mine...
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