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VariBall™ Roller System
Enhance the extended reach of slickline or e-line operations in highly deviated wells.
Page last modified
April 11 2024
The VariBall Roller System for slickline and e-line provides an efficient and effective down hole roller for systems used in high angled wells. Successful wireline operations in excess of 80 degrees are now routinely performed utilising the VariBall Roller System.
The elliptical roller ensures that the only point of contact between the toolstring and the tubing wall is the roller reducing frictional drag. The elliptical shape causes the roller to self-align in its most efficient rotational plane parallel with the low side of the tubing.
To aid orientation and allow for wireline rotation, the VariBall has an inbuilt swivel as part of the main assembly. The rollers are interchangeable allowing the client to require one chassis and various sized rollers to allow operational flexibility.
Pros & Limitations
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Four different sizes of chassis that, covering the range from 2-3/8” through to 7” tubing.
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Elliptical self-aligning rollers
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Orientated body to ensure roller to tubing contact
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360º built-in swivel
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Proven field reliability throughout the Hunting VariBall product range
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Flexibility and adaptability over current roller systems on the market
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Minimal parts, low maintenance
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Open tolerance design of chassis to roller, which allows ingress / egress of wellbore debris
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Cost savings - inventory and spare parts
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It is not supplied with a fixed roller size
Specification
| Specification Title | Specification Description |
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Areas of Application
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Ideally suited to highly deviated well bores | Built in swivels
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Capabilities
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Elliptical roller design ensures that only the rollers are in contact with the tubing walls.
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Compatability
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Standard chassis system, allows various roller configurations | Available in different connection configurations
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Cost
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Cost-saving due to minimal parts and lower maintenance.
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Handling
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Enhances extended reach in various operations | Improves deviated or horizontal well access
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Material
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VariBall rollers are 4140/45 carbon steel as standard and have been put through a hardening process.
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Technology Readiness Level
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[9/9]
Development
Technology demonstration
Mature / Proven
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