Product Description
Kelly is main driver of the whole drill string. It transmits torsional energy from the rotary table through the drill string to the bit at the bottom of the hole. TIANHE Kelly is a long square or hexagonal, precision machined heavy steel bar that is supported by the swivel through the rotary table and is connected to the first joint of drill pipe in the drill string.
Straightness of the kelly is very crucial in the manufacturing process, thus straightness inspections are carried out before, during and after each machining operation. The flats are precision-milled to API specifications. All milling processes are performed on specially designed rigid Kelly mills to ensure tight tolerances and high quality drive sections. Each TIANHE Kelly is furnished with a pressed steel thread protectors.
| Nom Size (in) |
Square kelly
Product
Code |
Hexagonal
Kelly
Product
Code |
Top Connection(LH) |
Bottom Connection |
I.D.(in) |
Drive
Section(in) |
| |
|
|
Standard O.D.(in) |
Optional O.D.(in) |
Square O.D.(in) |
Hex. O.D.(in) |
Square |
Hex. |
A |
B |
| 2 1/2 |
Z03-130000 |
|
6 5/8 REG LH 7 3/4 |
4 1/2 REG LH |
5 3/4 |
NC26 85.7 |
|
1 1/4 |
|
3 1/4 |
|
| 3 |
Z03-130100 |
Z04-130000 |
6 5/8 REG LH 7 3/4 |
4 1/2 REG LH |
5 3/4 |
NC31 4 1/8 |
NC26 3 3/8 |
1 3/4 |
1 1/4 |
3 3/8 |
3 3/8 |
| 3 1/2 |
Z03-130200 |
Z04-130100 |
6 5/8 REG LH 7 3/4 |
4 1/2 REG LH |
5 3/4 |
NC38 4 3/4 |
NC31 4 1/8 |
2 1/4 |
1 3/4 |
4 7/16 |
4 |
4 1/4 |
Z03-130300 |
Z04-130200 |
6 5/8 REG LH 7 3/4 |
4 1/2 REG LH |
5 3/4 |
NC46 6 1/4 |
NC38 4 3/4 |
2 13/16 |
2 1/4 |
5 1/2 |
4 4/5 |
| |
Z03-130400 |
Z04-130300 |
6 5/8 REG LH 7 3/4 |
4 1/2 REG LH |
5 3/4 |
NC50 6 3/8 |
NC38 4 3/4 |
2 13/16 |
2 1/4 |
5 1/2 |
4 4/5 |
5 1/4 |
Z03-130500 |
Z04-130400 |
6 5/8 REG LH 7 3/4 |
|
|
5 1/2 FH 7 |
NC46 6 1/4 |
3 1/4 |
3 |
6 3/4 |
5 29/32 |
| |
Z03-130600 |
Z04-130500 |
6 5/8 REG LH 7 3/4 |
|
|
NC56 7 |
NC50 6 3/8 |
3 1/4 |
3 1/4 |
6 3/4 |
5 29/32 |
6 |
|
Z04-130600 |
6 5/8 REG LH 7 3/4 |
|
|
|
5 1/2 FH 7 |
|
3 1/2 |
|
6 13/16 |
| |
|
Z04-130700 |
6 5/8 REG LH 7 3/4 |
|
|
|
NC56 7 |
|
3 1/2 |
|
6 13/16 |
Features and Benefits
1.Manufactured from AISI 4145H-modified, fully heat-treated alloy steel with a
Brinell hardness range of 285-341BHN and a minimum average Charpy impact
value of 40 ft-lbs;
2.Ends and drive sections, IDs and connections machined and inspected to API
specifications;
3.Ultrasonic inspection is performed on all sections;
4.Shipped in a protective steel-cased scabbard;
When ordering please specify:
1.Kelly type (square or hexagonal);
2.Nominal size and overall length;
3.Upper and lower connections.
Company Profile
Shandong Xilong Machinery Equipment Co., Ltd.
Is a professional supplier of various oilfield equipment in Dongying, Shandong, including API certified oil drilling and service equipment, oil production equipment, oil tubing, wellhead and downhole tools and accessories.
1.The company has developed various types and complete specifications of oil drilling and production wellhead mechanized tools.
2. Company export countries: Sales cover the country's major oil fields and Europe, the United States, the Middle East, Central Asia, Southeast Asia and other regions.
3. To bring customers what role: shandong Xilong Mechanical machinery equipment co., LTD. In domestic oil fields and the overseas market has a perfect service network, has a complete pre-sale, sale, after-sales service system, and provide special conditions according to the customer request work of customized products, domestic products cover the fields, are exported to North America, southeast Asia, the Middle East, central Asia and north Africa and other regions.
Packing & Delivery
Hot product
Certificate
FAQ
1. How can I place order? A: You can contact us by email about your order details, or place order on line.
2.How do I pay? A: After you confirm our PI, we will ask you to pay. T/T (HSBC) and PayPal, Western Union is our most commonly used method.
3. Do you accept small orders?
Yes, don't be too small business. If you're a small retailer or starting a business, we'd definitely love to grow with you. We look forward to building a long-term relationship with you.
4. Do you have any product inspection procedures?
A: 100% self-test before packaging.
5. What about the price?
Can you get cheaper?
A: We always put the interests of our customers at the forefront. Prices are negotiable under different conditions and we assure you of the most competitive price.
Audited Supplier 
){kind=link}