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.
“Due to the small access and overhead wires, we put our new 7822DT on the job immediately. We turned 8.25-in. augers to rock and drilled 8-in. air rotary to install a 4-in. monitoring well. We were impressed with the machine’s performance!”
Easy probe placement makes the 78 rigs ideal for sampling next to or near foundations, or inside hard-to-reach places.
Turning augers for well installation and other environmental investigations is made easy with the power of the 78 Series machines and augerheads.
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 stabilze the machine. Up to 9 tons of push is typical for this platform.
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.
Sampling at a new oil and gas development site.
Geotechnical information is collected for a new mining site.
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.
Coring through rock with the 7822DT and a 3.5 in. DTH Air Hammer.
Macro-Core® sediment sampling in the riverbed during the investigation of a coal tar problem.
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.
BUILT ON FEATURES, DESIGNED FOR EXPANDABILITY
The 7822DT is loaded with features and capabilities that enhance subsurface sampling ... from direct push to hollow stem augering, from air and mud rotary to concrete and rock coring. Real success is found when the most efficient, cost-effective solution (the right rig and tooling) is incorporated to finish the task at hand (successfully completing a project and making money for your company). More than ever, Geoprobe® equipment is the best solution with the most options. You’ll find the 7822DT to be more powerful to complete rotational drilling projects, designed to work with larger diameter tooling, and equipped with more options allowing you to offer more services to your clients. And with the Geoprobe® customer service team, you can always count on fast and knowledgeable support when you need it.
Some of those features Geoprobe® operators are sure to notice quickly include:
A totally redesigned Control Panel.
More options. More controls. More feedback for the operator. Just a nice layout.
Rear Stabilizer Blade. Used to stabilize the machine as well as transport the optional Drop Rack System.
Provides easy vertical positioning of the foot on unlevel terrain which, according to Victor, “is especially great for augering when you’re aligning the auger joints. The operator has complete control over alignment.”
Auxiliary hydraulic power ports.
Three quick coupling hydraulic power ports allow for the use of multiple field accessories including Moyno® pumps, hydraulic liner extruders, pressure washer modules, and many more. What makes two of these auxiliary outlets even more useful is that they are proportionally controlled by the operator from the control panel, and the two have a flow capacity of up to 25 gpm.
Safety and Serviceability.
Finally, but arguably the most important aspects of the new Geoprobe® Model 7822DT machine revolves around two big words: Safety and Serviceability. Safety first. This machine was designed and built CE compliant allowing machine owners to utilize the 7822DT on sites around the world regulated by the strictest safety protocol. As for serviceability, building durable and field supportable machines has been a trademark of Geoprobe® for over 20 years. During the design phase of the 7822DT project, the Geoprobe® engineering design team spent significant effort to streamline the service aspects users would encounter in hopes of eliminating or reducing a service interval whenever possible. Along these lines, one of the most exciting service related improvements to the 7822DT is the GH64 Modular Percussion Power Cell Technology. This feature allows for fast removal of the percussion hammer section of the optional GH64 hammer ... in less than 15 minutes! Combined with the fact that this Modular Percussion Power Cell is small and compact, it can now be sent via standard overnight carriers for easy service and fast, efficient turn around ... with no special fees.
So, think about it. All of these features ... and more ... in the same Geoprobe® small, compact package. “This machine is just so improved,” Victor added. “You can see the quality of this machine just by looking at it.”
7822DT OPTIONS & ACCESSORIES
Low Clearance Option
- Max. Height: 187 in. (4,750 mm)
- 78 in. stroke
- Max. Height: 118 in. (3,010 mm)
- 66 in. stroke
Four Speed GA4100 (213945)
Two Speed GA4000 (213944)
Automatic Drop Hammer
7 in. Single Clamp Breakout (212785)
Quick connect hydraulics for quick installation and removal of the clamp.
Hydraulic Liner Extruder
For 5 ft. Rods (205501)
For 4 ft. Rods (204258)
Moyno® 2L4 Positive Displacement Pump (205501)
Moyno® Hose Kit
Helper Side Mount (217726)
Operator Side Mount (217729)
Overhead Mast & Hydraulic Winch (215620)
New configuration provides users better control and faster line speed.
3 ft. Winch Extension Tube (213364)
Rotating Overhead Mast & Hydraulic Winch (215728)
Side-Mount Rod Rack (209257)
Drop Rack System (207659)
Easily and efficiently move tooling and supplies commonly used in the field.
Drop Rack System (207443)
Drop Rack with 50 gal. Pressure Washer System (213990)
25 gal. Water Transport System (209445)
Mounts on 207659 Drop Rack or on truck flatbed.
Rear Blade Forks (213203)
Rotational Safety Cage
No Drop Hammer (213002)
With Drop Hammer (212896)
Machine Vise (213932)
Accessory Mounting Brackets
a. Stabilizer Blade (211664)
b. Side Rail (211734)
Display Screen Heater Kit (207870)
Head Feed Pressure Control Module (216137)
High-Speed Water Swivel with Floating Sub (216398)
Field Service Kit (214224)
Hydraulic caps & plugs, electrical terminals, and much more, geared to keep your machine in the field.
Free copies of this brochure are available by filling out the Literature Request Form. Free copies can also be obtained in bulk for your promotional needs (just let us know the quantity you'd like in the comments field of the Literature Request Form).