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
Geoprobe® 7822DT V3
The Geoprobe® Manufactured GH63 Hammer with Bi-Directional Rotation
4 Speed Augerhead Attachment
78 Series Automatic Drop Hammer DH103
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
Tracking the 7822DT with a wireless remote
Built-in oscillation for easy alignment on uneven terrain, slopes, and hills
Tooling Transport Rack being dropped in place by the Rear Stabilizer Blade
Control Panel on the 7822DT
7-in. Single Clamp Breakout for the 7822DT
Geoprobe® 7822DT V3
7822DT (left) and 7822LC (right - low clearance option)
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.
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.
Click on a section below to learn more about the features and options of the 7822DT.
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.
Video: 7822DT Percussion Hammer
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®!
Video: 7822DT Rotary Head
4 Speed Augerhead Attachment
The 7822DT has the power to complete rotational drilling projects with the optional two and four speed rotary heads. The two speed head has a top speed of 150 rpm, and the four speed head has a top speed of 750 rpm. When running SPT through 3.25 inch hollow stem augers, the auto drop hammer can be swung into place over the borehole. Rock coring can be completed using the four-speed GA4100 high speed water swivel system. Diamond core drilling is done on the 7822DT using industry standard wireline diamond coring drilling tools. Both head options have up to 4,000 ft-lbs of force.
Video: 7822DT Automatic Drop Hammer
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.
The Geoprobe® 7822DT has several winch options to meet the needs of your field applications. A dual winch option is available that 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. A single winch system is available as well. Options for this include 2,500-lb, 1,800-lb, and 1,100-lb. winches.
The 2,500-lb winch has a line speed of 125 feet per minute and a line capacity of 75 feet. The 1,800-lb winch has a line speed of 125 feet per minute and a line capacity of 175 feet. The 1,100-lb winch has a line speed of 230 feet per minute and a line capacity of 250 feet.
Both the 1,800-lb and 1,100-lb winches are configured with a quick-change hook and overshot clevis - a feature exclusive to Geoprobe®. 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.
Video: 7822DT Frame Rail
Hydraulic liner extruder mount with dropdown work surface
The frame rail design on the 7822DT makes the machine expandable to fit your needs. Geoprobe® offers a number of factory options that include pumps, extruders, racks, and tool boxes that can be mounted on the frame rail system. In addition, hangers are available to build your own custom accessories.
Video: Remote Overview
Tracking the 7822DT with a wireless remote
Wireless and tethered remote control systems come standard with the 7822DT. Both remotes allow the operator to maintain a safe distance from the machine while tracking and include E-stops to quickly shut down the machine in an emergency.
The freedom of movement of the wireless remote enables a nearly unlimited view of machine surroundings. It’s also convenient when maneuvering in limited access locations or over rough terrain. Engine controls on the transmitter provide the convenience of starting or stopping the engine as well as adjusting rpm with the wireless remote.
The tethered remote allows for corded tracking of the machine. It is often used on sites that do not allow a wireless remote system and is a backup to the wireless remote.
Video: 7822DT Drill Mast
Built-in oscillation for easy alignment on uneven terrain, slopes, and hills
The winch mast on the Geoprobe® 7822DT telescopes into place, allowing for flexible height options based on work environment. This also adds a layer of safety during setup when working near overhead power lines or other obstacles. When necessary, a 3 ft mast extension can be added to the rig. Integrated drill mast oscillation allows the 7 822DT adapt to the work environment. The ability to angle probe makes the 7822DT ideal for sampling next to or near foundations, or inside hard-to-reach places.
Video: 7822DT Rear Blade
Tooling Transport Rack being dropped in place by the Rear Stabilizer Blade
The rear blade on the 7822DT can be used for machine stabilization as well as tool transport. During site setup, a tooling drop rack can be placed in front of the machine for easy access. This eliminates the need to walk around the machine for tooling, which saves time and conserves energy in the field. The lift capacity of the rear blade is 2,000 lbs.
Video: 7822DT Control System
Control Panel on the 7822DT
All of the 7822DT’s functions are at your fingertips in a well-organized, compact control panel. The systems display 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.
A number of features are built into the 7822DT to reduce engine load and fuel consumption. Load sense hydraulics 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 and burning less fuel. This feature is especially helpful when tracking the machine long distances, operating in elevated ambient temperatures, and performing high duty cycle operations such as coring or augering.
Additionally, an auto throttle function can be enabled on the control panel of the 7822DT. When enabled, the engine speed is controlled automatically. This allows the machine to go into full throttle when working and back to idle when not working. In addition to fuel savings, this creates a quieter work site.
Video: 7822DT Breakout
7-in. Single Clamp Breakout for the 7822DT
A breakout is available on the 7822DT for tripping out rods and breaking joints. It has an opening of 7 in. to firmly grip casing with a clamp force of up to 21,000 pounds of force. The breakout can be positioned either under the hammer or the rotary drive, as well as swung away from the machine.
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
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.
Video: 7822DT Water & Mud Pump Options
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
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
Video: 7822DT Percussion Hammer
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®!
Rotary Head (2 and 4 speed)
4 Speed Augerhead Attachment
Video: 7822DT Rotary Head
The 7822DT has the power to complete rotational drilling projects with the optional two and four speed rotary heads. The two speed head has a top speed of 150 rpm, and the four speed head has a top speed of 750 rpm. When running SPT through 3.25 inch hollow stem augers, the auto drop hammer can be swung into place over the borehole. Rock coring can be completed using the four-speed GA4100 high speed water swivel system. Diamond core drilling is done on the 7822DT using industry standard wireline diamond coring drilling tools. Both head options have up to 4,000 ft-lbs of force.
SPT / Geotech (Automatic Drop Hammer)
78 Series Automatic Drop Hammer DH103
Video: 7822DT Automatic Drop Hammer
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.
Dual Winches
A quick change hook and overshot clevis assembly adds to the multipurpose function of the dual winch system.
Video: 7822DT Winch Options
The Geoprobe® 7822DT has several winch options to meet the needs of your field applications. A dual winch option is available that 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. A single winch system is available as well. Options for this include 2,500-lb, 1,800-lb, and 1,100-lb. winches.
The 2,500-lb winch has a line speed of 125 feet per minute and a line capacity of 75 feet. The 1,800-lb winch has a line speed of 125 feet per minute and a line capacity of 175 feet. The 1,100-lb winch has a line speed of 230 feet per minute and a line capacity of 250 feet.
Both the 1,800-lb and 1,100-lb winches are configured with a quick-change hook and overshot clevis - a feature exclusive to Geoprobe®. 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.
Frame Rail Design for Adding Machine Accessories
Hydraulic liner extruder mount with dropdown work surface
Video: 7822DT Frame Rail
The frame rail design on the 7822DT makes the machine expandable to fit your needs. Geoprobe® offers a number of factory options that include pumps, extruders, racks, and tool boxes that can be mounted on the frame rail system. In addition, hangers are available to build your own custom accessories.
Tethered and Wireless Control
Tracking the 7822DT with a wireless remote
Video: Remote Overview
Wireless and tethered remote control systems come standard with the 7822DT. Both remotes allow the operator to maintain a safe distance from the machine while tracking and include E-stops to quickly shut down the machine in an emergency.
The freedom of movement of the wireless remote enables a nearly unlimited view of machine surroundings. It’s also convenient when maneuvering in limited access locations or over rough terrain. Engine controls on the transmitter provide the convenience of starting or stopping the engine as well as adjusting rpm with the wireless remote.
The tethered remote allows for corded tracking of the machine. It is often used on sites that do not allow a wireless remote system and is a backup to the wireless remote.
Telescoping Drill Mast / Oscillation
Built-in oscillation for easy alignment on uneven terrain, slopes, and hills
Video: 7822DT Drill Mast
The winch mast on the Geoprobe® 7822DT telescopes into place, allowing for flexible height options based on work environment. This also adds a layer of safety during setup when working near overhead power lines or other obstacles. When necessary, a 3 ft mast extension can be added to the rig. Integrated drill mast oscillation allows the 7 822DT adapt to the work environment. The ability to angle probe makes the 7822DT ideal for sampling next to or near foundations, or inside hard-to-reach places.
Rear Blade for Stabilization and Tooling Transport
Tooling Transport Rack being dropped in place by the Rear Stabilizer Blade
Video: 7822DT Rear Blade
The rear blade on the 7822DT can be used for machine stabilization as well as tool transport. During site setup, a tooling drop rack can be placed in front of the machine for easy access. This eliminates the need to walk around the machine for tooling, which saves time and conserves energy in the field. The lift capacity of the rear blade is 2,000 lbs.
Control System
Control Panel on the 7822DT
Video: 7822DT Control System
All of the 7822DT’s functions are at your fingertips in a well-organized, compact control panel. The systems display 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.
A number of features are built into the 7822DT to reduce engine load and fuel consumption. Load sense hydraulics 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 and burning less fuel. This feature is especially helpful when tracking the machine long distances, operating in elevated ambient temperatures, and performing high duty cycle operations such as coring or augering.
Additionally, an auto throttle function can be enabled on the control panel of the 7822DT. When enabled, the engine speed is controlled automatically. This allows the machine to go into full throttle when working and back to idle when not working. In addition to fuel savings, this creates a quieter work site.
7 in. Single Clamp Breakout
7-in. Single Clamp Breakout for the 7822DT
Video: 7822DT Breakout
A breakout is available on the 7822DT for tripping out rods and breaking joints. It has an opening of 7 in. to firmly grip casing with a clamp force of up to 21,000 pounds of force. The breakout can be positioned either under the hammer or the rotary drive, as well as swung away from the machine.
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
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)
Video: 7822DT Water & Mud Pump Options
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
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.
Typical tooling that can be run with the 7822DT include:
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 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
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 OIP, EC, 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)
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.
Typical tooling that can be run with the 7822DT include:
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.
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 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.
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
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
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 OIP, EC, MIP, LL MIP, MiHpt, HPT, CPT, and PST
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.
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.
Easy probe placement makes the 78 rigs ideal for sampling next to or near foundations, or inside hard-to-reach places.
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
A 5-in. concrete core opens up the subsurface for sampling or monitoring well installation.
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
This 7822DT cored through rock to 150 feet using industry standard NQ wireline diamond core drilling tools.
Direct Image® Subsurface Logging
These machines have been used extensively for MIP, HPT, and EC logging projects.
Monitoring Well Installation
Prepacked screen monitoring wells can be installed through driven 2.25-, 3.25-, 3.5-, or 3.75-in. casing.
Gas Field Exploration
Sampling at a new oil and gas development site.
Geotechnical Investigations
Geotechnical information is collected for a new mining site.
Mineral Exploration
Core samples were taken of permafrost during this site investigation.
Oil Field Investigations
A 7800 is used to install monitoring wells in an oil field.
Rock Coring
Coring through rock with the 7822DT and a 3.5 in. DTH Air Hammer.
Sediment Sampling
Macro-Core® sediment sampling in the riverbed during the investigation of a coal tar problem.
Soil Sampling
A 7822DT collects cored borings from 190 ft. in a remote area of a national forest.
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
Collecting soil and groundwater samples to determine the extent of contamination from a leaking underground fuel line with a 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
Geoprobe® 7822DT V3
The Geoprobe® Manufactured GH63 Hammer with Bi-Directional Rotation
4 Speed Augerhead Attachment
78 Series Automatic Drop Hammer DH103
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
Tracking the 7822DT with a wireless remote
Built-in oscillation for easy alignment on uneven terrain, slopes, and hills
Tooling Transport Rack being dropped in place by the Rear Stabilizer Blade
Control Panel on the 7822DT
7-in. Single Clamp Breakout for the 7822DT
Geoprobe® 7822DT V3
7822DT (left) and 7822LC (right - low clearance option)
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