Dual-Rotary

dual-rotary drilling

Foundex performs dual‑rotary drilling using purpose‑built equipment, including two Foremost DR‑24 dual‑rotary drills. Dual‑rotary methods are commonly selected in overburden conditions where borehole stability, casing control, and efficient penetration are critical.

The dual‑rotary system applies independent rotational torque to both the drill string and the casing, allowing the casing to advance continuously as the borehole is drilled. This approach supports stable hole conditions in loose, collapsing, or mixed ground and reduces the potential for hole sloughing during drilling operations.

Dual‑rotary drilling is routinely applied when maintaining casing alignment and hole integrity is required. With experienced crews and specialized dual‑rotary equipment, Foundex this method is ideal for controlled and efficient drilling in challenging ground conditions.