Skip to main content
Geoprobe® 7822DT

Geoprobe® 7822DT

Mike Hynes, Master Water Well Driller at John D. Hynes & Associates in Salisbury, MD, reports their 7822DT continues to do things and go places with continued success they didn’t believe was possible when they first purchased the rig. They drilled 70-ft. borings using mud rotary to replace piles and bulkheads at an Annapolis, MD, waterfront property (1st photo below).  The only access to the waterfront was by barge.  “It was quite a process,” Mike said.  “We loaded the rig with a crane onto the barge.  A tugboat piloted the barge over to waterfront, then off-loaded the 7822DT with a crane onto crane mats on the deck of the waterfront property to drill the borings.”

“We saved a lot of time and money by using our 7822DT on the transmission line project (2nd image below) by not using a full-sized drill rig,” Mike added.

At another location (3rd image below), the 7822DT was used to access the backyard of a building by crawling under the second floor deck.  They used the blade of the rig to cut a ramp for more clearance and unbolted the hoist at the top of the mast to make it short enough to fit under the deck.

“I also want to mention,” Mike said, “that when we have a problem with our equipment, which is not very often, the Geoprobe® Service Team is as good as it gets!”

Contact Us

1835 Wall Street
Salina, Kansas 67401
Phone: (785) 825-1842

7822DT rotary drilling rigs capability with direct push finesse

7822DT Drill Rig

From crowded street corners to far removed places, tackle various environmental, geotechnical and exploration applications with a single machine combining rotary drilling and direct push, saving time and money required to mobilize multiple drill rigs.

Photo Gallery


Geoprobe® 7822DT
A 7822DT, owned by John D. Hynes & Associates, Inc., in Salisbury, MD, uses logging mats to access transmission lines 1,200 ft. out into a marsh to drill boring foundations for new utility poles.
Geoprobe® 7822DT

Related Articles


As a project engineer with a Ph.D., Aaron Crowley desired to own his own company. So in May 2022 he partnered with Julie Oliphant, owner of Athena Engineering and Environmental, to launch a sister company ATHENA DRILLING to complete a range of geotechnica

ID: 13413 | Date:

For some air rotary drilling is a rarity, but for EICHELBERGERS INC in Pennsylvania it’s a weekly occurrence using their 7822DTs. They’ve completed air rotary to 220 feet; they’ve drilled using 8-inch and 10-inch casing. On one project they set 10-inch ca

ID: 13412 | Date:

Starting his drilling industry career as a consultant, David Draybuck discovered he didn’t love writing reports. So in 2011, he and his partner gathered funds from closed 401(k)s and an SBA loan to buy a piece of used equipment and launch ENVIROTECH DRILL

ID: 13409 | Date:

Established in 2017 to provide drilling services to geotechnical engineers — focusing on mud rotary technology, PG ENVIRONMENTAL SERVICES struggled to break into the environmental market.

ID: 13407 | Date:

Passionate about delivering exceptional geotechnical, environmental, and instrumentation exploration services, the TERRACON CONSULTANTS INC office in Savannah, Georgia, went from being without in-house drilling resources in 2021 to running three Geoprobe®

ID: 13403 | Date: