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Geotechnical Drilling Rigs

Geotechnical drilling and sampling built for speed and efficiency.


The Geoprobe® 3100GT Geotechnical Rig is designed to quickly perform SPT borings (augers & mud rotary), collect shelby tube samples, take rock cores, and push CPT cone…all on a 19,500 GVWR truck that does not require a CDL (Class A/B) to operate.

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Speed and Cost Savings with Geoprobe®

As an industry leader in innovation, Geoprobe® machines and tooling help the technical driller excel in an ever-changing environment. Geoprobe® geotechnical drilling rigs are designed to help make projects fast and efficient, thereby saving time and money. Truck-mounted and track geotechnical rigs are available. The 3100GT and 150GT are 19,500 lb. GVWR truck mounted rigs that do not require a Class A or B CDL to operate.

What is Geotechnical Drilling?

Geoprobe® has a variety of rigs and tooling designed to meet drillers’ needs when it comes to geotechnical projects. Geotechnical exploration refers to drilling to collect information used to engineer the foundations of structures, such as roadways, buildings, tunnels, and levees. The low impact and maneuverability of the rigs are perfect for investigative projects, too. The geotechnical rigs can move freely at project sites with limited access, such as next to foundations, inside buildings or under power lines.

Quality components like the automatic drop hammer, combo head, and split spoon sampling system, make the process for collecting geotechnical soil samples quick and efficient. Once collected, most samples are transferred to a laboratory for testing to collect information about the soil structure.

3100GT

❯ 3100GT
Geotechnical Drill Rig

The Geoprobe® 3100GT Geotechnical Rig is designed to quickly perform SPT borings (augers & mud rotary), collect shelby tube samples, take rock cores, and push CPT cone.

Geotechnical, Environmental and CPT

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150GT

❯ 150GT
Geotechnical Drill Rig

Specifically designed for customers focused on traditional geotechnical drilling applications utilizing: hollow stem auger, solid stem auger, SPT, mud rotary, air rotary, and high speed coring.

Geotechnical and Environmental

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3230DT

❯ 3230DT
Environmental & Geotechnical Drill Rig

The Geoprobe® 3230DT is ideal for geotechnical and environmental applications. The high-speed drill head easily turns augers, while the automatic drop hammer is equipped for SPT work.

Geotechnical, Environmental, Exploration and CPT

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7822DT

❯ 7822DT
Environmental & Geotechnical Drill Rig

The Geoprobe® 7822DT is a high-capacity direct push machine with a narrow platform. Applications include soil sampling, rock coring, groundwater monitoring, geotechnical and more.

Geotechnical, Environmental, Exploration and CPT

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6712DT

❯ 6712DT
Direct Push Machine

Modular drilling rig perfect for small- to medium-sized direct push projects. It breaks into three components if necessary for easy transport to remote sites.

Geotechnical, Environmental, Exploration and CPT

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2060CPT

❯ 2060CPT
Cone Penetration Testing

The Geoprobe® 2060CPT is a 20 ton cabin crawler used for Cone Penetration Testing (CPT). It includes many user-friendly controls to make jobs in the field quick, efficient, and comfortable.

Geotechnical and CPT

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20 CPT Press

❯ 20CPT Press
Cone Penetration Testing

This flexible mast option with a 20-ton capacity is specifically designed for performing CPT. It’s versatile too, with a quick mount design that allows the CPT mast to be attached to multiple platforms.

Geotechnical and CPT

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8150LS

❯ 8150LS
Rotary Sonic Drill Rig

The Geoprobe® 8150LS is a full-size rotary sonic rig with high performance. It is capable of running 10 ft. tooling and the GV5 sonic head provides 50,000 lbs. of dynamic force.

Geotechnical, Environmental, Exploration and Geothermal

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8250LS

❯ 8250LS
Rotary Sonic Drill Rig

The Geoprobe® 8250LS is a full-size rotary sonic rig capable of running 20-ft. tooling. The GV5 sonic head provides 50,000 lbs. of dynamic force for increased efficiency in the field.

Geotechnical, Environmental, Exploration and Geothermal

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3100GT Geotech Rig Features


Rotary Head

Rotary head on the 3100GT Geotechnical Drilling Rig

Multiple rotary head options are available for the 3100GT Geotechnical Drilling Rig. These include the GA4000 (4000 ft-lb, 150 rpm), GA4100 (4000 ft-lb, 750 rpm), CB5 Combo Head (6000 ft-lb, 600 rpm). All heads provide full torque in forward and reverse.

Automatic Drop Hammer

Automatic drop hammer on the 3100GT Geotechnical Drilling Rig

The DH104 Automatic Drop Hammer is equipped for Standard Penetration Testing (SPT) work. The easy-to-use drop hammer hydraulically sideshifts over the tool string. The DH104 Automatic Drop Hammer comes standard with a 140 lb. slug.

Head Side Shift

Head side shift on the 3100GT Geotechnical Drilling Rig

The head can be side-shifted a total of 26-in. This allows for side-shifting the head for rotary work, geotechnical work, and out of the way completely when using the winches. This makes working over the tool string quick and efficient.

Drill Mast Positioning

Drill mast positioning on the 3100GT Geotechnical Drilling Rig

The drill mast includes 105-in. of head feed travel. With extend, swing, mast dump, oscillation, and fold, the operator can quickly deploy and position the drill mast exactly where the hole dictates. Drill mast outriggers let you quickly setup above a mud pan.

Telescoping Dual Winch Mast

Dual winches on the 3100GT Geotechnical Drilling Rig

The telescoping winch mast reduces overall height but still allows the tripping out of 20-ft. lengths of rod when combined with the 3-ft. extension. The telescoping option allows you to set the mast height based on site and field conditions.

Cone Penetration Testing (CPT)

Cone Penetration Testing (CPT) on the 3100GT Geotechnical Drilling Rig

The 3100GT can be setup for CPT by using a few simple anchoring components: rod guide, anchor, and anchor bridge. Automatic head feed rate control advances the cone at a steady 2 centimeters per second specified by ASTM Standard D5778.

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