| Customization: | Available |
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| After-sales Service: | 3months |
| Warranty: | 3months |
| Shipping Cost: | Contact the supplier about freight and estimated delivery time. |
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Heavy weight drill pipe is a type of drill pipe whose walls are thicker and collars are longer than conventional drill pipe.
Heavy weight drill pipe was developed as an intermediate weight drill string member. It was originally developed for three reasons:
1. As a transition member to be run between heavy weight drill pipe and drill collars.
2. As a flexible weight member to be run in directional drilling.
3. As a weight member on small rigs, drilling small diameter holes.
More recently, with the advent of horizontal drilling, it has found a new application being used in the curved portion of the hole below the drill collars.
1. Made of 4145H alloy structural steel.
2. Production complies with the provisions under the Standard SY/T 5146-1997. Connector screws comply with the provisions of the Standard API SPEC 7-1.
3. The tube section has a larger diameter at mid length to protect the heavy weight drill pipe from wear.
4. Hardbanding and Internal Coating can be provided on customer's request.
Techinical data:
|
Size (in) |
O.D. (in) |
I.D. (in) |
Tool Joint O.D. (in) |
Tool Joint I.D(in) |
Thread |
Max.elevator dia (in) |
Central upset dia.(in) |
Min.drift dia. (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 |
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 |
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 |
4-1/2 |
4-1/4 |
||||||
|
5 |
5 |
4-3/4 |
How can I place order?
A: You can contact us by email about your order details, or place order on line.
How can I pay you?
A: After you confirm our PI, we will request you to pay. T/T (HSBC bank) and Paypal, Western Union are the most usual ways we are using.
What's the order procedure?
A: First we discuss order details, production details by email or TM. Then we issue you an PI for your confirmation. You will be requested to do pr -epaid full payment or deposit before we go into production. After we get the deposit, we start to process the order. We usually need 7-15days if we don't have the items in stock. Before production has been finished, we will contact you for shipment details, and the balance payment. After payment has been settled, we start to prepare the shipment for you.
How do you take care when your clients received defective products?
A: replacement. If there are some defective items, we usually credit to our customer or replace in next shipment.
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