David Willoughby

Horizontal Directional Drilling Introduction and Fundamentals-Drill Rig Types

Types of Drill Rigs in HDD: Mini, Midi, and Maxi Rigs

In Horizontal Directional Drilling (HDD), selecting the right drill rig is essential for the success of the project. Drill rigs are classified into three general categories: mini rigs, midi rigs, and maxi rigs. Mini rigs are ideal for small projects like drilling under driveways or small streams. Midi rigs, the most commonly used, handle mid-sized projects, while maxi rigs are employed for larger, more challenging crossings and require more workspace. Each rig type provides the necessary thrust, torque, and pullback capabilities to complete the drilling stages.
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