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7822DT
Environmental & Geotechnical Drill Rig

7822DT performing geotechnical work at a bridge washout site.

7822DT performing geotechnical work at a bridge washout site.

Transporting your tooling is made even simpler with the rear blade for transporting the drop rack tool carrier.

Transporting your tooling is made even simpler with the rear blade for transporting the drop rack tool carrier.

Using MC5 at an Abandoned UST Site

Using MC5 at an Abandoned UST Site

Easy probe placement makes the 78 rigs ideal for sampling next to or near foundations.

Easy probe placement makes the 78 rigs ideal for sampling next to or near foundations.

The 78 Series machines have been used extensively for MIP (Membrane Interface Probe), HPT (Hydraulic Profiling Tool), and EC (Electrical Conductivity) logging projects.

The 78 Series machines have been used extensively for MIP (Membrane Interface Probe), HPT (Hydraulic Profiling Tool), and EC (Electrical Conductivity) logging projects.

The Geoprobe® Model 7822DT utilizing its off-road capabilities and tethered remote.

The Geoprobe® Model 7822DT utilizing its off-road capabilities and tethered remote.

Because of their flexibility, rotary drilling is just one of the applications suitable for the 78 Series machines. This 7822DT is running a 4 in. downhole hammer in limestone.

Because of their flexibility, rotary drilling is just one of the applications suitable for the 78 Series machines. This 7822DT is running a 4 in. downhole hammer in limestone.

Using 7822DT at UST site in Wisconsin  during cathodic anode installation.

Using 7822DT at UST site in Wisconsin during cathodic anode installation.

DT22 Soil Sampling with the 7822DT

DT22 Soil Sampling with the 7822DT

7822DT performing geotechnical work at a bridge washout site.
Transporting your tooling is made even simpler with the rear blade for transporting the drop rack tool carrier.
Using MC5 at an Abandoned UST Site
Easy probe placement makes the 78 rigs ideal for sampling next to or near foundations.
The 78 Series machines have been used extensively for MIP (Membrane Interface Probe), HPT (Hydraulic Profiling Tool), and EC (Electrical Conductivity) logging projects.
The Geoprobe® Model 7822DT utilizing its off-road capabilities and tethered remote.
Because of their flexibility, rotary drilling is just one of the applications suitable for the 78 Series machines. This 7822DT is running a 4 in. downhole hammer in limestone.
Using 7822DT at UST site in Wisconsin  during cathodic anode installation.
DT22 Soil Sampling with the 7822DT

The Industry Benchmark for Direct Push Equipment

The 7822DT is designed with dependability, expandability, and performance in mind. It will help you adapt to changing work roles whether you're focused on environmental, geotechnical, or exploration work.

❯ Contact Us

> View Specs

7822DT
Environmental & Geotechnical Drill Rig


The Industry Benchmark for Direct Push Equipment

The 7822DT is designed with dependability, expandability, and performance in mind. It will help you adapt to changing work roles whether you're focused on environmental, geotechnical, or exploration work.

❯ Contact Us

.

Features & Options

Click on a section below to learn more about the features and options of the 7822DT.

Geoprobe® 7822DT V3

Geoprobe® 7822DT V3

The Geoprobe® Model 7822DT is a high-capacity direct push machine with a narrow platform for limited access areas and a sufficient stroke for added work space under the hammer. It was designed with specific goals in mind for the technical driller. Dependability. Expandability. Performance. These rigs will help you adapt to changing work roles whether you’re focused on environmental, geotechnical, or exploration work. From the small footprint of the 7822DT, which makes for easy maneuverability, to the power under the GH60 Series hammer, we think you’ll wonder why you don’t already own this machine.

The Geoprobe® Manufactured GH63 Hammer with Bi-Directional Rotation

The Geoprobe® Manufactured GH63 Hammer with Bi-Directional Rotation

Exclusively from Geoprobe Systems®!  Who but Geoprobe Systems® dedicates an entire R&D team to design, test, and build a hammer that, time and again, drives a machine ahead of its field?  The GH63 Percussion Hammer, the heart of the 7822DT, continues to impress machine owners.  The Modular Percussion Power Cell Technology saves owners money and time when it comes to service.  The power cell section can be quickly removed then economically shipped via standard overnight carriers for easy service and quick turnaround.  More Power.  Easier Serviceability.  It’s the GH63 Hammer ... and it’s only from Geoprobe Systems®!

4 Speed Augerhead Attachment

4 Speed Augerhead Attachment

Now you have two options for rotary work.  The GA4100 four-speed augerhead (shown) provides the same high torque (4,000 ft. lb.) as the popular GA4000 but with two additional high speeds pushing its top speed over 700 rpm.  The result is a compact drill head with versatile performance for drilling jobs varying from torquing-in hollow stem augers to high-speed rock coring applications.  Shifting between speeds is as simple as touching a toggle switch to shift-on-the-fly from 1st to 2nd and 3rd to 4th.  A manual lever on the head is used to shift from 2nd to 3rd.  The GA4100 and the two-speed GA4000 are integrated onto a swing-out mounting system.

Video: Automatic Drop Hammer Overview

78 Series Automatic Drop Hammer DH103

78 Series Automatic Drop Hammer DH103

The 7822DT can be equipped with an automatic drop hammer (optional) for performing SPT testing for geotechnical investigations. The 7822DT can advance borings for SPT testing by augering, driven casing and sampling, or wash boring. The compact size of the 7822DT enables it to access remote areas.

Video: 7822DT Winch Options

A quick change hook and overshot clevis assembly adds to the  multipurpose function of the dual winch system.

A quick change hook and overshot clevis assembly adds to the multipurpose function of the dual winch system.

Overhead hydraulic winches are an essential part of many drilling operations. Several hydraulic winch options are available for the Geoprobe® 7822DT to build a rig to meet your specific needs. The winch option that provides maximum versatility is the dual winch system. This is typically configured with a 2,500-lb. winch for the more difficult pulling and an 1,100-lb. winch for the faster, deeper wireline work. The 2,500-lb. winch operates at up to 125 feet per minute and includes 75 feet of wire rope. The 1,100-lb. winch operates at 220 feet per minute and includes 250 feet of wire rope. The 1,100-lb. winch come equipped with a quick-change hook and overshot clevis - a feature exclusive to Geoprobe Systems®. When ready to switch from pulling to coring, simply swap out the swivel hook for the overshot clevis installed on your overshot, and continue working. It’s quick, simple, and can all be done by hand. A single winch system is also available for 78 series machines, when a dual winch may not be necessary. When machine transport height is a limiting factor, a single winch system with a rotating mast top is available. This configuration reduces transport height by 14 inches and is helpful when loading the rig into an enclosed trailer or shipping container. 

Hydraulic liner extruder mount with dropdown work surface

Hydraulic liner extruder mount with dropdown work surface

The frame rail is designed to make the 7822DT expandable. A number of optional features can be mounted to the track system on this rig.

Video: Wireless Remote Overview

Tracking the 7822DT with a wireless remote

Tracking the 7822DT with a wireless remote

The 7822DT comes with a wireless remote and a tethered remote for machine transport.

Built-in oscillation for easy alignment on uneven terrain, slopes, and hills

Built-in oscillation for easy alignment on uneven terrain, slopes, and hills

The 7822DT feature built-in oscillation for easy setup on sites with rough terrain, uneven slopes, or hills.  The machine remains stable while the field operator aligns the probe cylinder and tool string on a straight path into the subsurface.  Built-in oscillation ... a standard feature on 7822DT rigs!

Tooling Transport Rack being dropped in place by the Rear Stabilizer Blade

Tooling Transport Rack being dropped in place by the Rear Stabilizer Blade

Used to stabilize the machine as well as transport the optional Drop Rack System.

Control Panel on the 7822DT

Control Panel on the 7822DT

All of the machine’s functions are at your fingertips in a well-organized, compact control panel.  The new Systems Display, standard on the updated 7822DT control panel, provides real-time systems analysis and a suite of built-in diagnostic tools. Also included are system safeguards that protect the main engine and hydraulic components when important operational parameters are compromised.  It’s all there to assist the rig operator.

7-in. Single Clamp Breakout for the 7822DT

7-in. Single Clamp Breakout for the 7822DT

With an adjustable clamp force of up to 17,500 lbf., the 7822DT breakout has an opening of 7 in. with hardened jaw pads to firmly grip casing.  The breakout, which can be positioned either under the hammer or the auger drive, has a side pivot allowing it to swing over and away from the hole when not in use.  The breakout can be retrofitted on to all 7822DT rigs already in the field.  An optional Coring Upgrade Kit (217024) is also available to firmly grip thin-walled 2.75 in. OD casing without damage to the casing.  The kit includes formed jaw pads and a circle wrench with carbide inserts.

Video: 7822DT V3 Updates

Geoprobe® 7822DT V3

Geoprobe® 7822DT V3

Recently, the version 3 7822DT was released. This update focused on increased stability, enhanced hydraulic cooling, and decreased fuel consumption. Below are some details.

Increased Stability
More than ever, customers are taking the 7822DT to sites that include difficult terrain.  The proven track undercarriage has been widened 9.5 inches.  Increased track width improves stability on sideslopes, especially when hauling tools in optional side racks.  The track system has also been moved forward 6 inches in relation to the powertrain and drill mast.  Why?  Over the last few years we’ve seen an increase in customers who are ‘loading the drillmast’ with optional features for rotary applications (i.e. 4 speed coring head, dual winches, breakout, etc).  These features add weight to the drillmast portion of the rig.  By moving the tracks forward users will experience better fore/aft stability making it easier for users to operate on job sites safely.

Enhanced Hydraulic Cooling
Load sense hydraulics of the V3 machines supply only the system pressure required to perform requested tasks.  Under light or no load conditions, system pressure is lowered, significantly reducing heating of the hydraulic fluid.  This feature is especially helpful when operating in elevated ambient temperatures and performing high duty cycle operations such as coring, augering, or tracking long distances.

Decreased Fuel Consumption
The V3 operational controls allow the hydraulic system load on the engine to vary depending on the need of the requested task.  For many operations, engine load is reduced and therefore less fuel is consumed as compared to systems that maintain high operating pressures for every task regardless of need.

7822DT (left) and 7822LC (right - low clearance option)

7822DT (left) and 7822LC (right - low clearance option)

Additional features and options on the 7822DT include:

  • A Low Clearance Option
  • Auxilliary Hydraulic Power Ports
  • Moyno® 2L4 Positive Displacement Pump
  • Moyno® Hose Kit
  • Side-Mount Rod Rack
  • Drop Rack System
  • Drop Rack with 50 gal. Pressure Washer System
  • 25 gal. Water Transport System
  • Rear Blade Forks
  • Rotational Safety Cage
  • Machine Vise
  • Accessory Mounting Brackets
  • Display Screen Heater Kit
  • Head Feed Pressure Control Module
  • High-Speed Water Swivel with Floating Sub

Features & Options


Geoprobe® 7822DT V3

Geoprobe® 7822DT V3

Video: Geoprobe® 7822DT Overview

The Geoprobe® Model 7822DT is a high-capacity direct push machine with a narrow platform for limited access areas and a sufficient stroke for added work space under the hammer. It was designed with specific goals in mind for the technical driller. Dependability. Expandability. Performance. These rigs will help you adapt to changing work roles whether you’re focused on environmental, geotechnical, or exploration work. From the small footprint of the 7822DT, which makes for easy maneuverability, to the power under the GH60 Series hammer, we think you’ll wonder why you don’t already own this machine.

GH60 Series Percussion Hammer


The Geoprobe® Manufactured GH63 Hammer with Bi-Directional Rotation

The Geoprobe® Manufactured GH63 Hammer with Bi-Directional Rotation

Exclusively from Geoprobe Systems®!  Who but Geoprobe Systems® dedicates an entire R&D team to design, test, and build a hammer that, time and again, drives a machine ahead of its field?  The GH63 Percussion Hammer, the heart of the 7822DT, continues to impress machine owners.  The Modular Percussion Power Cell Technology saves owners money and time when it comes to service.  The power cell section can be quickly removed then economically shipped via standard overnight carriers for easy service and quick turnaround.  More Power.  Easier Serviceability.  It’s the GH63 Hammer ... and it’s only from Geoprobe Systems®!

Augerhead (2 and 4 speed)


4 Speed Augerhead Attachment

4 Speed Augerhead Attachment

Now you have two options for rotary work.  The GA4100 four-speed augerhead (shown) provides the same high torque (4,000 ft. lb.) as the popular GA4000 but with two additional high speeds pushing its top speed over 700 rpm.  The result is a compact drill head with versatile performance for drilling jobs varying from torquing-in hollow stem augers to high-speed rock coring applications.  Shifting between speeds is as simple as touching a toggle switch to shift-on-the-fly from 1st to 2nd and 3rd to 4th.  A manual lever on the head is used to shift from 2nd to 3rd.  The GA4100 and the two-speed GA4000 are integrated onto a swing-out mounting system.

Automatic Drop Hammer


78 Series Automatic Drop Hammer DH103

78 Series Automatic Drop Hammer DH103

Video: Automatic Drop Hammer Overview

The 7822DT can be equipped with an automatic drop hammer (optional) for performing SPT testing for geotechnical investigations. The 7822DT can advance borings for SPT testing by augering, driven casing and sampling, or wash boring. The compact size of the 7822DT enables it to access remote areas.

Overhead Mast with Dual Winches


A quick change hook and overshot clevis assembly adds to the  multipurpose function of the dual winch system.

A quick change hook and overshot clevis assembly adds to the multipurpose function of the dual winch system.

Video: 7822DT Winch Options

Overhead hydraulic winches are an essential part of many drilling operations. Several hydraulic winch options are available for the Geoprobe® 7822DT to build a rig to meet your specific needs. The winch option that provides maximum versatility is the dual winch system. This is typically configured with a 2,500-lb. winch for the more difficult pulling and an 1,100-lb. winch for the faster, deeper wireline work. The 2,500-lb. winch operates at up to 125 feet per minute and includes 75 feet of wire rope. The 1,100-lb. winch operates at 220 feet per minute and includes 250 feet of wire rope. The 1,100-lb. winch come equipped with a quick-change hook and overshot clevis - a feature exclusive to Geoprobe Systems®. When ready to switch from pulling to coring, simply swap out the swivel hook for the overshot clevis installed on your overshot, and continue working. It’s quick, simple, and can all be done by hand. A single winch system is also available for 78 series machines, when a dual winch may not be necessary. When machine transport height is a limiting factor, a single winch system with a rotating mast top is available. This configuration reduces transport height by 14 inches and is helpful when loading the rig into an enclosed trailer or shipping container. 

Frame Rail Design for Adding Machine Accessories


Hydraulic liner extruder mount with dropdown work surface

Hydraulic liner extruder mount with dropdown work surface

The frame rail is designed to make the 7822DT expandable. A number of optional features can be mounted to the track system on this rig.

Tethered and Wireless Control


Tracking the 7822DT with a wireless remote

Tracking the 7822DT with a wireless remote

Video: Wireless Remote Overview

The 7822DT comes with a wireless remote and a tethered remote for machine transport.

Integrated Drill Mast Oscillation


Built-in oscillation for easy alignment on uneven terrain, slopes, and hills

Built-in oscillation for easy alignment on uneven terrain, slopes, and hills

The 7822DT feature built-in oscillation for easy setup on sites with rough terrain, uneven slopes, or hills.  The machine remains stable while the field operator aligns the probe cylinder and tool string on a straight path into the subsurface.  Built-in oscillation ... a standard feature on 7822DT rigs!

Rear Blade for Stabilization and Tooling Transport


Tooling Transport Rack being dropped in place by the Rear Stabilizer Blade

Tooling Transport Rack being dropped in place by the Rear Stabilizer Blade

Used to stabilize the machine as well as transport the optional Drop Rack System.

Control Panel


Control Panel on the 7822DT

Control Panel on the 7822DT

All of the machine’s functions are at your fingertips in a well-organized, compact control panel.  The new Systems Display, standard on the updated 7822DT control panel, provides real-time systems analysis and a suite of built-in diagnostic tools. Also included are system safeguards that protect the main engine and hydraulic components when important operational parameters are compromised.  It’s all there to assist the rig operator.

7 in. Single Clamp Breakout


7-in. Single Clamp Breakout for the 7822DT

7-in. Single Clamp Breakout for the 7822DT

With an adjustable clamp force of up to 17,500 lbf., the 7822DT breakout has an opening of 7 in. with hardened jaw pads to firmly grip casing.  The breakout, which can be positioned either under the hammer or the auger drive, has a side pivot allowing it to swing over and away from the hole when not in use.  The breakout can be retrofitted on to all 7822DT rigs already in the field.  An optional Coring Upgrade Kit (217024) is also available to firmly grip thin-walled 2.75 in. OD casing without damage to the casing.  The kit includes formed jaw pads and a circle wrench with carbide inserts.

Version 3 Updates


Geoprobe® 7822DT V3

Geoprobe® 7822DT V3

Video: 7822DT V3 Updates

Recently, the version 3 7822DT was released. This update focused on increased stability, enhanced hydraulic cooling, and decreased fuel consumption. Below are some details.

Increased Stability
More than ever, customers are taking the 7822DT to sites that include difficult terrain.  The proven track undercarriage has been widened 9.5 inches.  Increased track width improves stability on sideslopes, especially when hauling tools in optional side racks.  The track system has also been moved forward 6 inches in relation to the powertrain and drill mast.  Why?  Over the last few years we’ve seen an increase in customers who are ‘loading the drillmast’ with optional features for rotary applications (i.e. 4 speed coring head, dual winches, breakout, etc).  These features add weight to the drillmast portion of the rig.  By moving the tracks forward users will experience better fore/aft stability making it easier for users to operate on job sites safely.

Enhanced Hydraulic Cooling
Load sense hydraulics of the V3 machines supply only the system pressure required to perform requested tasks.  Under light or no load conditions, system pressure is lowered, significantly reducing heating of the hydraulic fluid.  This feature is especially helpful when operating in elevated ambient temperatures and performing high duty cycle operations such as coring, augering, or tracking long distances.

Decreased Fuel Consumption
The V3 operational controls allow the hydraulic system load on the engine to vary depending on the need of the requested task.  For many operations, engine load is reduced and therefore less fuel is consumed as compared to systems that maintain high operating pressures for every task regardless of need.

Additional Features and Options


7822DT (left) and 7822LC (right - low clearance option)

7822DT (left) and 7822LC (right - low clearance option)

Additional features and options on the 7822DT include:

  • A Low Clearance Option
  • Auxilliary Hydraulic Power Ports
  • Moyno® 2L4 Positive Displacement Pump
  • Moyno® Hose Kit
  • Side-Mount Rod Rack
  • Drop Rack System
  • Drop Rack with 50 gal. Pressure Washer System
  • 25 gal. Water Transport System
  • Rear Blade Forks
  • Rotational Safety Cage
  • Machine Vise
  • Accessory Mounting Brackets
  • Display Screen Heater Kit
  • Head Feed Pressure Control Module
  • High-Speed Water Swivel with Floating Sub

Machine Features Photo


7822DT Machine Features

Tooling & Accessories

Click on a section below to learn more about the tooling & accessories for the 7822DT.

Using the automatic drop hammer to perform foundation testing.

Using the automatic drop hammer to perform foundation testing.

Typical tooling that can be run with the 7822DT include:

  • 60-in. Direct Push Tooling
  • Probe Rod Sizes: 3.75 in., 3.5 in., 3.25 in., 2.25 in., 1.5 in., 1.25 in.*
  • Direct Image® Tooling
  • Macro Core® MC5 Soil Sampling
  • DT22 Soil Sampling
  • DT325 / DT35 / DT375 Dual Tube Soil Sampling
  • SP22 Groundwater Sampling
  • SP16 Groundwater Sampling
  • 2.0 in., 1.5 in., 1.0 in., 0.75-in. Prepacked Monitoring Well 
    Installations
  • 4.25 in. and 6.25 in. HSA System

​​*Center Rod Use Only

Video: DT22 Soil Sampling System Overview

The Geoprobe® DT22 Soil Sampling System is a direct push system for collecting continuous core samples of unconsolidated materials from within a sealed casing of Geoprobe® 2.25 in. outside diameter probe rods. Samples are collected and retrieved within a liner that is threaded onto the leading end of a string of Geoprobe® 1.25 in. OD light-weight center rods and are inserted to the bottom of the outer casing.

Video: 3.75-inch Tooling System

The DT35 Soil Sampling System, designed for use with 3.5 in. probe rods, uses a unique combination of the cutting shoe, sheath, and liner retainer to allow efficient recovery of samples in formations ranging from plastic clays to saturated sands. The DT35 system is designed to quickly recover samples well below the water table. Problems with liner failure or having the liner lodge in sample sheath are virtually eliminated with this system.

The Geoprobe® Screen Point 22 System

The Geoprobe® Screen Point 22 System

The Screen Point 22 (SP22) Groundwater Sampler from Geoprobe Systems® was designed to keep the screen away from all percussive energy while the sampler is lowered downhole, thus extending the life of the screen.

The SP22 can be used alone as a groundwater grab sampler or groundwater profiling tool, or with the DT22 Soil Sampling System. The screens can be deployed using either 1.25-in. Lightweight Center Rods or PVC riser.

The screen head adapts to either a stainless steel or PVC screen. Designed for tough probing conditions, the fully retrievable sampler works well with the 8040DT machine or with 77 or 66 Series machines.

Video: Macro-Core® Center Rod

Our MC5 Soil Sampling System is a single tube, discrete or continuous system with unmatched durability.

MC5 Light Weight Center Rod Soil Sampling System The MC5 1.25 in. Center Rod System was designed for the absolute worst of the worst direct push probing conditions. “These are conditions that we normally do not recommend probing in,” according to Mike Carlin, Project Engineer, “so we developed the toughest soil sampling system in the direct push industry ... it’s a brute!”

Video: Interlocking Split Spoon Overview

The interlocking design self aligns during assembly and is quick to disassemble

The interlocking design self aligns during assembly and is quick to disassemble

Our patented interlocking split spoon sampler is a unique geotechnical innovation from Geoprobe® that is engineered to greatly benefit your field team. It is built to be 2X stronger, last longer, and saves both money and field time over a conventional split spoon. Additionally, it meets ASTM Standard D1586.

The interlocking design provides axial alignment of the tube halves, making for a quicker assembly of the sampler. Each time it goes together it self aligns, creating a perfect fit. With the threads aligned, the cutting shoe and drive head can be threaded to the split spoon. The threads are a multi-lead, which requires fewer turns during assembly and disassembly over conventional split spoons. Less time is spent during assembly and disassembly, which speeds up each test interval.

In additional to time savings, the interlocking split sheath has two times the strength and durability of conventional split spoons. Enhanced material properties and manufacturing result in greater longevity. Design plays an important role as well. Each interlocking point keeps the two tube halves engaged throughout the sampling process. The strength of these connections prevents the sampler from bulging in dense materials. It also keeps the tube halves tightly engaged even when over-filling of the sampler occurs.

*Split tube soil sampling system manufactured under U.S. Patent 9,551,188

Video: OIP Overview

Direct Image® tooling systems vertically log in-situ soil characteristics such as lithology, electrical conductivity, permeability, VOC contaminant content, various other geotechnical parameters, and fluorescence. These logs can then be combined to create accurate, highly detailed conceptual site models…the critical first step in any site investigation. Our Direct Image® systems include OIPEC, MIP, LL MIP, MiHpt, HPT, CPT, and PST

Video: Hydraulic Liner Extruder Overview

This tool sure makes life easier in the field. In the middle of a busy day, you don’t need the hassles associated with a stubborn, stuck liner.

The Geoprobe® Hydraulic Liner Extruder is simple to use and can be adapted to most Geoprobe® machines with auxiliary hydraulics. “It mounts to the machine’s side receiver hitches in just a few minutes,” says Dave Golden, Project Lead, “and it’s perfect for pushing sluggish or stuck liners from the Macro-Core® sample tubes.” A two-piece adapter converts the extruder assembly to accommodate larger diameter DT325 sample tubes. “It won’t get every liner every time,” Dave added, “but our customers will appreciate having this device in the field for all of the stuck liners it does free.”

Using the Hydraulic Liner Extruder is simple. A Macro-Core®, DT22, DT325, or DT45 Sample Tube with the sluggish liner is threaded on to the front end of the extruder. As the hydraulic "push" is applied to the opposite end of the extruder, the liner is slowly pushed from inside the Sample Tube and out the end of the extruder.

Macro-Core® is a registered trademark of Kejr, Inc., Salina, KS.

Video: Spring Assisted Swivel Pull Cap Overview

2.25 in. Spring Assisted Pull Cap - Pin (Left) and Box (Right)

2.25 in. Spring Assisted Pull Cap - Pin (Left) and Box (Right)

The 2.25 in. Spring Assisted Swivel Pull Cap is designed to reduce operator fatigue when adding or removing sections of rods to the inner tool string. The internal springs of the pull cap bear the weight of the rod string. With minimal effort, the operator can adjust the rod string up or down when threading or unthreading the rods. The natural self-alignment of the rod string prevents tipping off center and binding of the threads.

Tooling & Accessories


Overview

Using the automatic drop hammer to perform foundation testing.

Using the automatic drop hammer to perform foundation testing.

Typical tooling that can be run with the 7822DT include:

  • 60-in. Direct Push Tooling
  • Probe Rod Sizes: 3.75 in., 3.5 in., 3.25 in., 2.25 in., 1.5 in., 1.25 in.*
  • Direct Image® Tooling
  • Macro Core® MC5 Soil Sampling
  • DT22 Soil Sampling
  • DT325 / DT35 / DT375 Dual Tube Soil Sampling
  • SP22 Groundwater Sampling
  • SP16 Groundwater Sampling
  • 2.0 in., 1.5 in., 1.0 in., 0.75-in. Prepacked Monitoring Well 
    Installations
  • 4.25 in. and 6.25 in. HSA System

​​*Center Rod Use Only

DT22

Video: DT22 Soil Sampling System Overview

The Geoprobe® DT22 Soil Sampling System is a direct push system for collecting continuous core samples of unconsolidated materials from within a sealed casing of Geoprobe® 2.25 in. outside diameter probe rods. Samples are collected and retrieved within a liner that is threaded onto the leading end of a string of Geoprobe® 1.25 in. OD light-weight center rods and are inserted to the bottom of the outer casing.

> Learn More
DT35 / DT37

Video: 3.75-inch Tooling System

The DT35 Soil Sampling System, designed for use with 3.5 in. probe rods, uses a unique combination of the cutting shoe, sheath, and liner retainer to allow efficient recovery of samples in formations ranging from plastic clays to saturated sands. The DT35 system is designed to quickly recover samples well below the water table. Problems with liner failure or having the liner lodge in sample sheath are virtually eliminated with this system.

> Learn More
Groundwater

The Geoprobe® Screen Point 22 System

The Geoprobe® Screen Point 22 System

The Screen Point 22 (SP22) Groundwater Sampler from Geoprobe Systems® was designed to keep the screen away from all percussive energy while the sampler is lowered downhole, thus extending the life of the screen.

The SP22 can be used alone as a groundwater grab sampler or groundwater profiling tool, or with the DT22 Soil Sampling System. The screens can be deployed using either 1.25-in. Lightweight Center Rods or PVC riser.

The screen head adapts to either a stainless steel or PVC screen. Designed for tough probing conditions, the fully retrievable sampler works well with the 8040DT machine or with 77 or 66 Series machines.

> Learn More
Macro-Core® MC5

Video: Macro-Core® Center Rod

Our MC5 Soil Sampling System is a single tube, discrete or continuous system with unmatched durability.

MC5 Light Weight Center Rod Soil Sampling System The MC5 1.25 in. Center Rod System was designed for the absolute worst of the worst direct push probing conditions. “These are conditions that we normally do not recommend probing in,” according to Mike Carlin, Project Engineer, “so we developed the toughest soil sampling system in the direct push industry ... it’s a brute!”

Interlocking Split Spoon

Video: Interlocking Split Spoon Overview

The interlocking design self aligns during assembly and is quick to disassemble

The interlocking design self aligns during assembly and is quick to disassemble

Our patented interlocking split spoon sampler is a unique geotechnical innovation from Geoprobe® that is engineered to greatly benefit your field team. It is built to be 2X stronger, last longer, and saves both money and field time over a conventional split spoon. Additionally, it meets ASTM Standard D1586.

The interlocking design provides axial alignment of the tube halves, making for a quicker assembly of the sampler. Each time it goes together it self aligns, creating a perfect fit. With the threads aligned, the cutting shoe and drive head can be threaded to the split spoon. The threads are a multi-lead, which requires fewer turns during assembly and disassembly over conventional split spoons. Less time is spent during assembly and disassembly, which speeds up each test interval.

In additional to time savings, the interlocking split sheath has two times the strength and durability of conventional split spoons. Enhanced material properties and manufacturing result in greater longevity. Design plays an important role as well. Each interlocking point keeps the two tube halves engaged throughout the sampling process. The strength of these connections prevents the sampler from bulging in dense materials. It also keeps the tube halves tightly engaged even when over-filling of the sampler occurs.

*Split tube soil sampling system manufactured under U.S. Patent 9,551,188

> Learn More
Direct Image®

Video: OIP Overview

Direct Image® tooling systems vertically log in-situ soil characteristics such as lithology, electrical conductivity, permeability, VOC contaminant content, various other geotechnical parameters, and fluorescence. These logs can then be combined to create accurate, highly detailed conceptual site models…the critical first step in any site investigation. Our Direct Image® systems include OIPEC, MIP, LL MIP, MiHpt, HPT, CPT, and PST

> Learn More

Hydraulic Liner Extruder

Video: Hydraulic Liner Extruder Overview

This tool sure makes life easier in the field. In the middle of a busy day, you don’t need the hassles associated with a stubborn, stuck liner.

The Geoprobe® Hydraulic Liner Extruder is simple to use and can be adapted to most Geoprobe® machines with auxiliary hydraulics. “It mounts to the machine’s side receiver hitches in just a few minutes,” says Dave Golden, Project Lead, “and it’s perfect for pushing sluggish or stuck liners from the Macro-Core® sample tubes.” A two-piece adapter converts the extruder assembly to accommodate larger diameter DT325 sample tubes. “It won’t get every liner every time,” Dave added, “but our customers will appreciate having this device in the field for all of the stuck liners it does free.”

Using the Hydraulic Liner Extruder is simple. A Macro-Core®, DT22, DT325, or DT45 Sample Tube with the sluggish liner is threaded on to the front end of the extruder. As the hydraulic "push" is applied to the opposite end of the extruder, the liner is slowly pushed from inside the Sample Tube and out the end of the extruder.

Macro-Core® is a registered trademark of Kejr, Inc., Salina, KS.

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Spring Assisted Swivel Pull Cap

Video: Spring Assisted Swivel Pull Cap Overview

2.25 in. Spring Assisted Pull Cap - Pin (Left) and Box (Right)

2.25 in. Spring Assisted Pull Cap - Pin (Left) and Box (Right)

The 2.25 in. Spring Assisted Swivel Pull Cap is designed to reduce operator fatigue when adding or removing sections of rods to the inner tool string. The internal springs of the pull cap bear the weight of the rod string. With minimal effort, the operator can adjust the rod string up or down when threading or unthreading the rods. The natural self-alignment of the rod string prevents tipping off center and binding of the threads.

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Applications

Angle Probing

Angle Probing


Easy probe placement makes the 78 rigs ideal for sampling next to or near foundations, or inside hard-to-reach places.

Augering

Augering


Turning augers for well installation and other environmental investigations is made easy with the power of the 78 Series machines and augerheads.

Concrete Coring

Concrete Coring


A 5-in. concrete core opens up the subsurface for sampling or monitoring well installation.

Cone Penetration Testing

Cone Penetration Testing


The augerhead torque allows insertion of ample-sized anchors to stabilize the machine. Up to 15 tons of push is typical for this platform (based on ability to anchor effectively).

 

Diamond Core Drilling

Diamond Core Drilling


This 7822DT cored through rock to 150 feet using industry standard NQ wireline diamond core drilling tools.

Direct Image® Subsurface Logging

Direct Image® Subsurface Logging


These machines have been used extensively for MIP, HPT, and EC logging projects.

Monitoring Well Installation

Monitoring Well Installation


Prepacked screen monitoring wells can be installed through driven 2.25-, 3.25-, 3.5-, or 3.75-in. casing.

Gasfield Exploration

Gas Field Exploration


Sampling at a new oil and gas development site.

 

Geotechnical Investigations

Geotechnical Investigations


Geotechnical information is collected for a new mining site.

Mineral Exploration

Mineral Exploration


Core samples were taken of permafrost during this site investigation.

Oil Field Investigations

Oil Field Investigations


A 7800 is used to install monitoring wells in an oil field.

Rock Coring

Rock Coring


Coring through rock with the 7822DT and a 3.5 in. DTH Air Hammer.

 

Sediment Sampling

Sediment Sampling


Macro-Core® sediment sampling in the riverbed during the investigation of a coal tar problem.

Soil Sampling

Soil Sampling


A 7822DT collects cored borings from 190 ft. in a remote area of a national forest.

Standard Penetration Testing (SPT)

Standard Penetration Testing (SPT)


78 Series machines can be equipped with an automatic drop hammer (optional) for performing SPT testing for geotechnical investigations.

Storage Tank Investigations

Storage Tank Investigations


Collecting soil and groundwater samples to determine the extent of contamination from a leaking underground fuel line with a 7822DT.

Videos


Overview

Features & Options

Tooling & Sampling

Accessories

Training

Direct Image®

Maintenance

Specifications

Click below to view standard specifications. Specifications are subject to change without notice.

Overall Dimensions
Width (in)70Width (mm)1778
Length (transport) (in)133Length (transport) (mm)3378
Length (deployed, lateral fully extended) (in)153Length (deployed, lateral fully retracted) (mm)3886
Height (normal transport) (in)100Height (normal transport) (mm)2540
Height (deployed; winch mast up) (in)187Height (deployed; winch mast up) (mm)4750
Height (deployed; winch mast up) (ft)15.6Height (deployed; winch mast up) (m)4.75
Base Unit Weight (lbs)8,160Base Unit Weight (kg)3,701
Unit Weight (w/ typical options) lbs9,560Unit Weight (w/ typical options) kg4,336
Ground Speed (mph)5Ground Speed (kph)8.0
Estimated Track Surface Area (in²)1656Estimated Track Surface Area (cm²)10,681
Estimated Ground Pressure (psi)5.8Estimated Ground Pressure (bar)0.40
Drill Mast Positioning
Extension (fore and aft) (in)15Extension (fore and aft) (mm)381
Lateral (side to side) (± degrees)10Lateral (side to side) (± degrees)10
Oscillation (degrees from vertical)10Oscillation (degrees from vertical)10
Drill Mast Dump (in)20Drill Mast Dump (mm)508
Front outrigger travel (in)NAFront outrigger travel (mm)NA
Rear stabilizer travel (in)Rear outrigger travel (mm)0
Rear stabilizer width (in)60Rear stabilizer width (mm)1524
Rear stabilizer lift (lbs)2000Rear stabilizer lift (kg)907
Drill Mast Specifications
Head Travel (in)78Head Travel (mm)1981
Head Travel (ft)6.5Head Travel (m)1.98
Head Crowd Force (lbs) 36,000Head Crowd Force (kN)160
Head Pull Force (lbs) 48,000Head Pull Force (kN)214
Head Feed CarriageComp. slidesHead Feed CarriageComp. slides
Head Feed Pressure Control (w.o.b)OptionalHead Feed Pressure Control (w.o.b)Optional
Head Sideshift (in)NAHead Sideshift (mm)NA
Prime Mover & Hydraulic Specs
EngineKubota V2403M Tier 4 final/Tier 4i(LRC)EngineKubota V2403M Tier 4 final/Tier 4i(LRC)
Engine Rated Power (hp)65/56Engine Rated Power (kW)48/42
Fuel Capacity (gal)17Fuel Capacity (L)64
Pump typeAxial Piston - LS-HP limitedPump typeAxial Piston - LS-HP limited
Max pressure (psi)4,000 Max pressure (bar)276
Max flow (gpm)40 Max flow (L/min)151
Additional PumpNAAdditional PumpNA
Direct Push Hammer
GH63GH63
Percussion rate (Hz)32Percussion rate (Hz)32
Hammer Rotation Torque (ft-lb)560Hammer Rotation Torque (N-m)759
Hammer Rotation Speed (rpm)200Hammer Rotation Speed (rpm)200
Rotary Drive Options
2-Speed Rotary DriveGA40002-Speed Rotary DriveGA4000
Rotation Torque (Range 1) (ft-lb)4000 Rotation Torque (Range 1) (N-m)5423
Rotation Speed (Range 2) (rpm)150 Rotation Speed (Range 2) (rpm)150
Hex Adapter (in)1.625 Hex Adapter (mm)41
4-Speed Rotary DriveGA41004-Speed Rotary DriveGA4100
Rotation Torque (Range 1) (ft-lb)4000 Rotation Torque (Range 1) (N-m)5423
Rotation Speed (Range 4) (rpm)750 Rotation Speed (Range 4) (rpm)750
Hex Adapter (in)1.625 Hex Adapter (mm)41
Primary Winch
line pull (lbf)2500 line pull (kN)11.12
line speed (fpm)125 line speed (m/min)38
cable length (ft)100 cable length (m)30
Second Winch
line pull (lbf)1100 line pull (kN)4.89
line speed (fpm)230 line speed (m/min)70
cable length (ft)250 cable length (m)76
Breakout
Single ClampSingle Clamp
Max Clamp force (lbf)21,000 Clamp force (kN)93.41
Breakout torque (ft-lb)6,000 Breakout torque (N-m)8135
Min Casing size compatible (in)1.25 Min Casing size compatible (mm)32
Max Casing size compatible (in)7 Max Casing size compatible (mm)178

Resources

Click on a section below to view information.

7822DT V3
Cenozoic project
Atlantic Testing drilling project
Geoprobe® 6712DT
DT60 Sampling with the Geoprobe® 3230DT
Versatility of Geoprobe® 7822DT
Nearly as shiny and clean as it was coming out of the factory, Geo Logic’s 66DT retrieves soil samples inside a grocery store (after hours).
Geoprobe® 7822DT
Installation of Copper Grounding Rods
Geoprobe® 7822DT Air Rotary
Geoprobe® 7822DT
Sampling in the middle of a street
Geoprobe® 7822DT
Geoprobe® 7822DT
Tyler Felder and Randy Eddings use the 7822DT to rock core deep in the woods near Reidsville, NC.
Geoprobe® 7800
EPI Driller, Dave Latimer, uses a 6-in. roller bit with air to chew through some tight overburden in the Philadelphia area. The 7822DT makes switching over to air easy and a pleasure to run.
With ‘I’ beams and plywood sheeting for stabilization, the 7822DT is ready to plug one of several leaky abandoned CPT boreholes. One of the abandoned boreholes had grown up to 9-in. in diameter at the surface, and had a flow rate of about 6 gpm.
Geoprobe® 7822DT
Soil Sampling - Walker Hill
Soil Samples
Very little head room. The vertical work space for this 7822DT was only 13 feet, but it was enough for Hynes & Associates to collect foundation information for structural modifications for the building.
Vladislav Knytl is the MIP Operator for Dekonta.
7822DT - Before
Spring Assisted Swivel Pull Cap (left, pin) 217609 and (box) 226053. Options for pin up and pin down applications.
A Geoprobe® 7822DT, connected to an air compressor, is used to install monitoring wells at an underground storage tank site by Cory Walker, Owner of CORTEK Drilling.
Percussion hammer power translates into tool advancement rates. Here’s one example ... during informal testing in our backyard, our 7822DT could drive a 3.75-in. rod string to approximately 30 feet in 21 minutes. The 3230DT advanced the 3.75-in. rods to 30 feet in well under 6 minutes. Both had a solid drive point on the lead end.
Removing drill stems from 162-ft. bgs.
CJ, Driller, and Dalles, Helper, collect MC5 samples with a 7822DT in Cambridge, Ontario.
A new 7822DT that arrived at Sr. Standford Bleming College is an example of the Resource Drilling and Blasting program’s dedication to continue to use and teach with the best equipment available to the industry.
Geoprobe® 7822DT Augering
Brandon Stranz, Lead Driller for ALTECH Drilling and Investigative Services, unloads their Geoprobe® 7822DT out of a CC-130 J Hercules at 5 Wing Goose Bay, Newfoundland and Labrador. Altech’s field team operated the 7822DT at the 5 Wing Practice Training Area, an austere military training facility.
Drilling Engineers designed a barge to accommodate their Geoprobe® 7822DT for the geotechnical investigation on Erie Lake Reservoir.
Geoprobe® 7822DT Dual Winch
Daniel Fisher (left) and Robert Albinger, Horizon Construction & Exploration, remove the inner drill string to allow an open and cased hole for easy installation of Cathodic Anode.
James Corsitto (left), Helper, and Chris Migliore, Driller, run the ADT 7822DT rig.  ADT has outfitted their 7822DT with a Side Port Swivel so they can quickly switch from direct push to wet rotary.
2.0 in. Slim Prepacks and 3.75 in. Rods

7822DT

7822DT (One-Sheet)

Literature Type: Product Sheets
Download File: File Geoprobe_7822DT_8-14-19.pdf




Rig Dimension Comparison - 7822DT vs. 3230DT

GH64 Hydraulic Hammer Nitrogen Gas Charge Instructions (7822DT, 7800)

Machine Service for 78 Series Machines (7822DT, 7800)

Machine Service for 78 Series Machines (7822DT, 7800)

Literature Type: Service Documents Technical Documents
Download File: File 78_series_machines_2013_0.pdf



7822DT performing geotechnical work at a bridge washout site.

7822DT performing geotechnical work at a bridge washout site.

Transporting your tooling is made even simpler with the rear blade for transporting the drop rack tool carrier.

Transporting your tooling is made even simpler with the rear blade for transporting the drop rack tool carrier.

Using MC5 at an Abandoned UST Site

Using MC5 at an Abandoned UST Site

Easy probe placement makes the 78 rigs ideal for sampling next to or near foundations.

Easy probe placement makes the 78 rigs ideal for sampling next to or near foundations.

The 78 Series machines have been used extensively for MIP (Membrane Interface Probe), HPT (Hydraulic Profiling Tool), and EC (Electrical Conductivity) logging projects.

The 78 Series machines have been used extensively for MIP (Membrane Interface Probe), HPT (Hydraulic Profiling Tool), and EC (Electrical Conductivity) logging projects.

The Geoprobe® Model 7822DT utilizing its off-road capabilities and tethered remote.

The Geoprobe® Model 7822DT utilizing its off-road capabilities and tethered remote.

Because of their flexibility, rotary drilling is just one of the applications suitable for the 78 Series machines. This 7822DT is running a 4 in. downhole hammer in limestone.

Because of their flexibility, rotary drilling is just one of the applications suitable for the 78 Series machines. This 7822DT is running a 4 in. downhole hammer in limestone.

Using 7822DT at UST site in Wisconsin  during cathodic anode installation.

Using 7822DT at UST site in Wisconsin during cathodic anode installation.

DT22 Soil Sampling with the 7822DT

DT22 Soil Sampling with the 7822DT

Geoprobe® 7822DT V3

Geoprobe® 7822DT V3

The Geoprobe® Manufactured GH63 Hammer with Bi-Directional Rotation

The Geoprobe® Manufactured GH63 Hammer with Bi-Directional Rotation

4 Speed Augerhead Attachment

4 Speed Augerhead Attachment

78 Series Automatic Drop Hammer DH103

78 Series Automatic Drop Hammer DH103

A quick change hook and overshot clevis assembly adds to the  multipurpose function of the dual winch system.

A quick change hook and overshot clevis assembly adds to the multipurpose function of the dual winch system.

Hydraulic liner extruder mount with dropdown work surface

Hydraulic liner extruder mount with dropdown work surface

Tracking the 7822DT with a wireless remote

Tracking the 7822DT with a wireless remote

Built-in oscillation for easy alignment on uneven terrain, slopes, and hills

Built-in oscillation for easy alignment on uneven terrain, slopes, and hills

Tooling Transport Rack being dropped in place by the Rear Stabilizer Blade

Tooling Transport Rack being dropped in place by the Rear Stabilizer Blade

Control Panel on the 7822DT

Control Panel on the 7822DT

7-in. Single Clamp Breakout for the 7822DT

7-in. Single Clamp Breakout for the 7822DT

Geoprobe® 7822DT V3

Geoprobe® 7822DT V3

7822DT (left) and 7822LC (right - low clearance option)

7822DT (left) and 7822LC (right - low clearance option)

Geoprobe® Machines

We engineer and manufacturer machines for environmental, geotechnical, exploration, CPT, geothermal, and water well applications. Below you will find more information on all of our rigs. Click on them for more information.

Rotary Sonic
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

Rotary Sonic
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

Direct Push & Rotary
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

Direct Push & Rotary
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

Direct Push & Rotary
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

Geotechnical
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

Geotechnical
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

CPT
20 CPT Press Mounted on a Skid Steer

❯ 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 (skid steer, 6712DT).

Geotechnical and CPT

CPT
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

Limited Access
5410

❯ 5410
Direct Push Machine

54-in. stroke and 28,900 lb. of pulling capacity for subsurface work. Lateral movement of the unit provides for offset placement of the probe without moving the carrier vehicle.

Environmental

Limited Access
54LT

❯ 54LT
Direct Push Machine

Rugged, compact probing unit designed for tight spaces and rough terrain. This unit is narrow enough to fit through standard 36-in. doors to get to confined, enclosed places.

Environmental

Limited Access
540MT

❯ 540MT
Direct Push Machine

Ready for confined spaces and low ceilings with reliable Geoprobe® power. When folded, the unit is less than 29 inches (737 mm) high.

Environmental

Limited Access
420M

❯ 420M
Direct Push Machine

At 23 in. wide, 62 in. tall (folded), and weighing less than 425 lb., the 420M can be manually lifted and carried to remote sampling locations.

Environmental

Water Well
DM250 Water Well Rig

❯ DM250
Water Well Rig

The DRILLMAX® DM250 Water Well Rig is the only rig mounted on a truck under CDL requirements that can handle 20-ft. drill pipe. The perfect rig for 2-in. -6-in. shallow water wells.

Geothermal and Water Well

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