The Casing Running Tool (CRT) is used to run casing with a top drive system. It hoists, lowers, rotates, and supports casing connections during drilling operations. The tool connects to the top drive main shaft and supports casing installation and handling.

CRT Casing Running Tool for Drilling Rigs

The CRT allows rotation and reciprocation while running the casing string and enables fill-up and circulation during operations. The system supports circulation pressure up to 5,000 psi depending on configuration and rig setup.

CRT are available for different top drive models, casing sizes, and rig configurations. Products are supplied from Chinese, UK, and USA manufacturers. Contact us.

Is it connected directly to the top drive?
Yes, it connects to the main shaft and operates during casing installation.

Does it support fluid circulation while operating?
Yes, circulation and fill-up can be performed during running operations.

Who typically uses this equipment?
Drilling contractors and rig operators in oil and gas projects.

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We offer a variety of Top Drives and accessories from all major manufacturers that fits your budget, both new and used!

Blue Horizon Drilling offers chinese, UK and USA brands for Top Drives. Brand Likes TESCO, CANRIG, BENTECH, NOV etc.

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Kelly Bushing Drilling

The Kelly bushing for drilling is a critical adapter that connects the rotary table to the kelly. Moreover, it features a square or hexagonal profile that matches the kelly. Four steel pins or rollers secure it firmly to the master bushing. As the rotary table turns, rotary motion transfers through the pins and flat surfaces to the kelly, effectively driving the drill string while allowing vertical movement. This ensures smooth, controlled drilling and reduces wear on components.

Design Variants of Kelly Bushings

Kelly bushings are available in different drive designs. The Pin Drive type uses heavy-duty steel pins that fit into holes in the rotary table, ensuring a secure and stable connection. The Square Drive type relies on flat mating surfaces, providing direct torque transfer to the kelly without slippage.

Roller-Equipped Kelly Bushing

Some Kelly bushings are designed with four integrated rollers. These rollers minimize friction between the kelly and the bushing, reducing wear and extending the service life of both components.

Purpose and Functionality of Kelly Bushings

The primary function of a Kelly bushing is to act as a reliable adapter between the rotary table and the drill string. It transfers rotary motion from the table to the kelly while allowing vertical movement, ensuring smooth and efficient drilling operations.

Talk to Blue Horizon Drilling Today

Blue Horizon Drilling provides Kelly Bushings from reputable Chinese, UK, and USA brands, giving drilling operators worldwide access to dependable and field-tested solutions. Contact us for expert guidance and quotations.

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The master bushing is installed in the rotary table to connect slips and kelly bushings and transfer torque during drilling.
It supports drill string stability and slip performance, so proper sizing and machining are important for safe operation.
Manufactured to API Spec 7K, it works in both onshore and offshore rigs and is available in solid and split body types for different rotary systems.

Designed for Compatibility Across Rotary Systems

Different rigs require different drive mechanisms and insert configurations. Master bushings support:

• Pin drive systems
• Square drive systems
• Standard and extended insert bowls
• Multiple tubular OD ranges

Because of this flexibility, they remain a core component in modern rotary drilling systems.

Technical Features

Built for Heavy Rotary Loads

Manufactured from high-strength alloy steel casting to handle torque and drilling loads in rotary operations.

Solid and Split Body Options

Available in both configurations to match rig requirements and maintenance preferences.

API Spec 7K Compliance

Designed and manufactured according to international drilling equipment standards.

Slip and Insert Compatibility

Supports drill pipe slips, drill collar slips, casing slips, and rotary insert bowls.

Wide Size Coverage

Suitable for rotary table diameters from 17 1/2″ to 49 1/2″.

Why Master Bushing Selection Matters

Incorrect sizing leads to:

• slip instability
• vibration
• pipe wear
• torque loss
• Correct matching ensures:
• stable drilling
• proper load transfer
• longer equipment life

Request Technical Details

Provide your rotary table size, insert type, and drilling application.
Our team will recommend the correct master bushing model for your rig.

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A Rotary Table drilling plays a vital role in drilling operations, delivering the rotational force required to turn the drill string and keep the drilling process running smoothly. Whether used as the primary drive system or as a reliable backup on rigs equipped with a Top Drive, rotary tables remain an essential part of safe and efficient drilling.

Applications

• Oil & gas drilling operations

• Onshore drilling rigs

• Offshore platforms

• Heavy-duty rotation systems

• Backup drive systems for Top Drive rigs

Buy Rotary Table for Oil & Gas Drilling

Our rotary tables come from trusted Chinese, UK, and USA manufacturers. Reach out to us for detailed pricing information.

They are API-compliant, highly durable, and designed for both onshore and offshore drilling rigs.
Each unit delivers stable rotation, high torque, and reliable long-term performance in demanding drilling environments.
Multiple sizes and configurations are available to match different rig requirements.

See More Rotary System Equipment.

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