HDD Drilling Techniques: Small Drill vs. Big Drill

Every jobsite tells a different story. From tight suburban lanes to open rural crossings, and your drill needs to fit that story.

Picking the right horizontal directional drill (HDD) isn’t about buying the biggest or newest model. It’s about matching capability to the ground conditions, pipe diameter, and project scale. As such, every metre drilled is efficient, clean, and controlled.

Match the Drill to the Bore

Before you even roll a rig onto site, the bore plan should dictate your drill size. A smaller drill can efficiently handle short, small-diameter installations, while longer or deeper crossings demand more thrust, torque, and fluid capacity.

Compact rigs like the EasyDrill FD10G and the Goodeng GS50 deliver the control and responsiveness needed for city work, service connections, and short utility runs.

If your project stretches past a few hundred metres or involves a 20–30 inch pipe, you’ll need the muscle of a larger system like the Goodeng G2200-LS. With higher thrust and torque, it maintains stability without stressing the drill string or product pipe.

Matching the drill to your bore plan prevents overloading equipment and maintains bore path integrity from pilot to pullback.

Read the Jobsite, Above and Below Ground

Both above-ground and underground conditions affect your choice. In busy urban areas, a smaller drill footprint reduces surface disruption and speeds setup. Machines like the Goodeng G10 excel here.

On wider, rural sites, larger drills such as the Goodeng GS500-LS bring power and reach, cutting down on multiple setups and increasing productivity.

Soil type also matters. Sandy or clay-heavy soils require stable drilling fluid, while tools like the UNIMIX 13 Mud Mixer and reamers such as the Barrel Reamer keep the bore open and smooth. Rocky soil requires strong cutting tools to maintain alignment.

Think Beyond Drilling

A good rig only pays off if it can get to the job quickly. Moving rigs between sites affects costs and efficiency. Small rigs are lighter, easier to transport, and need fewer support vehicles. Larger rigs need planning, heavy transport, and sometimes lifting equipment. 

JB Trenchless offers both, as well as certified new and used HDD rigs, giving teams flexibility without extra capital investment.

Invest for the Long Haul

The cheapest rig isn’t always the most economical. Durability, operator comfort, fluid management, and tooling wear all affect lifecycle costs. Paired with reliable mud mixing systems and reamers, they maximise uptime and efficiency while keeping long-term costs manageable.

JB Trenchless provides operator training across several rigs, reducing learning curves and allowing them to switch units easily within a fleet.

Choose Smart. Drill Better.

There’s no one-size-fits-all HDD rig, but there is a right one for your work.

The best HDD setup is one that fits both the ground and your workflow. Smaller rigs bring flexibility to confined sites, while large drills deliver the power and reach for major crossings.

JB Trenchless gives you both compact and large HDD rigs, mud systems, and tooling that work together to keep your bores accurate, clean, and profitable.

Explore the full range and find the drill that fits your ground, team, and project.