API Certified Roller Kelly Bushings from China Suppliers - High-Quality Factory-Made Solutions for Drilling 효율성
Roller Kelly Bushing Specifications
1. Light Duty Roller Kelly Bushing
| Model | 20-MDP | 17-MDP | LDS |
|---|---|---|---|
| Max Torque | 13729 N·m (10126 ft·lbf) | ||
| Drive Type | Square | ||
| Square Kelly Size | 63.5-133.35 mm (2 1/2-5 1/4 in) | ||
| Hexagonal Kelly Size | 76.2-107.95 mm (3-4 1/4 in) | ||
| Dimensions | 458×458×700 mm (18×18×27.5 in) | 508×508×700 mm (20×20×27.5 in) | |
| Weight | 460 kg (1012 lb) | 340 kg (750 lb) | 400 kg (808 lb) |
2. Medium-Duty Roller Kelly Bushing
| Model | 20-HDP | MDS |
|---|---|---|
| Max Torque | 13729 N·m (10126 ft·lbf) | |
| Drive Type | Square | Pin Shaft |
| Square Kelly Size | 63.5-133.35 mm (2 1/2-5 1/4 in) | |
| Hexagonal Kelly Size | 76.2-107.95 mm (3-4 1/4 in) | |
| Dimensions | 493×493×696 mm (19.4×19.4×27.4 in) | 510×510×720 mm (20×20×28.3 in) |
| Weight | 670 kg (1470 lb) | 420 kg (924 lb) |
3. Heavy Duty Roller Kelly Bushing
| Model | HDS | 27-HDP |
|---|---|---|
| Max Torque | 32365 N·m (23871 ft·lbf) | 22555 N·m (16636 ft·lbf) |
| Drive Type | Square | Pin Shaft |
| Square Kelly Size | 76.2-152.4 mm (3-6 in) | 63.5-133.35 mm (2 1/2-5 1/4 in) |
| Hexagonal Kelly Size | 76.2-152.4 mm (3-6 in) | 76.2-107.95 mm (3-4 1/4 in) |
| Dimensions | 630×630×740 mm (24.8×24.8×29.1 in) | 630×630×780 mm (24.8×24.8×30.7 in) |
| Weight | 700 kg (1540 lb) | 730 kg (1610 lb) |
Roller Kelly Features
1. Versatility
Compatible with a wide range of Square and Hexagonal Kelly sizes, providing excellent adaptability for various drilling operations.
2. Friction Reduction
Quad-roller precision design with four induction-hardened rollers reduces frictional resistance by up to 68% compared to solid bushings.
3. API Compliant Connections
Available with various standard connection types to strictly meet different rig configurations and adhere to API standards.
Field Application Note: In a Middle Eastern rig operation, heavy duty pin drive bushings reduced torque fluctuations by 35%, resulting in a 50% increase in Kelly service life compared to standard bushing systems.
Frequently Asked Questions
What are the main types of Roller Kelly Bushings available?
We offer three main categories to suit different drilling requirements: Light Duty, Medium-Duty, and Heavy Duty Roller Kelly Bushings.
What is the maximum torque capacity of the Heavy Duty models?
The Heavy Duty Roller Kelly Bushing (HDS model) can handle a maximum torque of up to 32,365 N·m (23,871 ft·lbf), ensuring reliability in demanding operations.
Are these bushings compatible with both square and hexagonal kellys?
Yes, our Roller Kelly Bushings are highly versatile and are designed to be compatible with a wide range of both Square and Hexagonal Kelly sizes.
How does the quad-roller design improve drilling performance?
The quad-roller precision design utilizes four induction-hardened rollers, which significantly reduces frictional resistance by up to 68% compared to traditional solid bushings.
Do the Roller Kelly Bushings comply with industry standards?
Absolutely. They feature API-compliant connections and are available with various standard connection types to securely integrate with different rig configurations.
Can using these bushings extend the service life of the Kelly?
Yes. Field data from a Middle Eastern rig operation demonstrated that heavy-duty pin drive bushings reduced torque fluctuations by 35%, leading to a 50% increase in Kelly service life compared to standard bushing systems.