Description
Product Description
A Kelly is a key component in rotary drilling systems, used to transmit torque from the rotary table to the drill string.
It is a long, square or hexagonal steel bar that passes through the rotary table and allows the drill string to rotate while supporting axial loads during drilling operations.
Kellys are widely used in oil and gas drilling, especially in conventional rotary drilling rigs, and are manufactured to ensure high strength, durability, and reliable performance under extreme conditions.
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Name | Kelly |
| Type | Square Kelly / Hexagonal Kelly |
| Material | Alloy Steel (High Strength) |
| Standard | API Spec 7-1 |
| Size Range | 2-1/2″ – 6″ (customizable) |
| Length | 12 m – 13.5 m (customizable) |
| Connection Type | API Reg / IF / FH |
| Hardness | As per API requirements |
| Surface Treatment | Phosphating / Anti-corrosion coating |
| Application | Oilfield drilling operations |
| Certification | API / ISO 9001 |
| Customization | Available |
Product Features
High Torque Transmission
Kelly bars are designed to efficiently transmit rotary torque from the rotary table to the drill string.
High Strength Alloy Steel
Manufactured from premium alloy steel to ensure excellent mechanical properties and durability.
Wear Resistance
Surface treatments improve resistance to wear and extend service life in harsh drilling environments.
Precision Machining
Strict machining processes ensure dimensional accuracy and smooth operation.
API Standard Compliance
Produced according to API Spec 7-1, ensuring compatibility with international drilling equipment.
Applications
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Oil and gas drilling operations
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Rotary drilling rigs
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Onshore drilling projects
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Offshore drilling platforms
Quality Control
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Raw material inspection
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Heat treatment control
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Mechanical property testing
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Dimensional inspection
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Thread inspection
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Third-party inspection available
Packaging & Delivery
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Thread protectors for both ends
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Steel frame packaging
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Suitable for long-distance transportation
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Fast delivery worldwide
FAQ
What is a Kelly used for in drilling?
A Kelly is used to transfer rotational force from the rotary table to the drill string, enabling drilling operations.
What types of Kelly are available?
Kellys are typically available in square and hexagonal shapes, depending on drilling requirements.
What standards do your Kelly products meet?
Our Kellys are manufactured according to API Spec 7-1 standards.
Can you customize the size and length?
Yes, we can customize the size, length, and connection type according to your project needs.
What material is used for Kelly?
Kelly bars are usually made from high-strength alloy steel for durability and performance.
Call to Action
If you are looking for a reliable Kelly manufacturer, please contact us for technical details, pricing, and customization options.
