How All Terrain Technology Helps in Rock Drilling

By Jeff Davis (Product Manager, Ditch Witch Division)
From Dig Different

The game changed 25 years ago for the horizontal directional drilling industry with the introduction of a dual-pipe, rock drilling package. This All Terrain technology means operators have an option outside of powering the drill bit primarily with drilling fluid using a mud motor.  

Mud motors are still a common tool found in the HDD industry. They take drilling fluids that are pumped downhole, through the drill string at high volumes, and into a rotor and stator, and they transfer that into mechanical power that drives the rotary bit on a mud motor. Mud motors are high-fluid volume downhole tools that can produce high drilling fluid pressures downhole and increase the possibility of inadvertent returns.

“Inadvertent returns happen when the drilling takes the path of least resistance to the surface, does not follow the designated path of the bore and makes its way through to the surface in unwanted areas,” says Jeff Davis, Ditch Witch’s HDD product manager. “Mud motors can often send much more fluid downhole than what is actually needed on the job.”

For example, a bore that requires 20 gpm of mud flow to efficiently flush the bore of cuttings could end up using an additional 180 gpm of fluid to run the mud motor. And, as the drill units become larger or the ground harder, mud motors can send as much as 10 times more mud downhole than what is needed to clean the borehole, according to Davis.

The additional drilling fluid results from inefficiencies of creating mechanical power. To accumulate enough energy for the drill bit, mud often flows over a 15- to 30-foot power section. “On average, only 50% of the power generated makes it downhole. In comparison, 95% or more of the HDD unit’s inner drive power is successfully transferred downhole using All Terrain systems,” Davis says.

ABOUT ALL TERRAIN TECHNOLOGY

A switch from powering the bit with drilling fluid to All Terrain technology helps operators minimize how much fluid is pumped downhole. All Terrain systems provide a way to use the HDD unit’s power more efficiently for driving the drill bit.

This is possible because of the dual-pipe technology offered by All Terrain systems. With an inner drive shaft that reaches back to the HDD unit, these motors physically control exactly how much horsepower is sent to the bit.

By reducing operator reliance on drilling fluid, All Terrain technology is an efficient power option. This direct connection to an HDD unit also reduces the overall size of an All Terrain system. Instead of a long power section, All Terrain systems are between 3 and 5 feet long. And by placing the electronic locating package in the middle of that system, the shorter length puts the package 1 to 2 feet behind the bit.

“Locators are then able to more accurately track the location of the drill bit’s cutting face, instead of predicting where the bit could be when the electronics package is embedded behind a mud motor’s 15-foot power section,” Davis says.

A small footprint is becoming a common requirement on HDD job sites. All Terrain technology generally provides a smaller job site footprint than mud motor-driven job sites, partially due to having to use less fluid. Large volumes of fluid usage on the job site comes with larger tanks and larger reclamation systems with a mud motor, according to Davis.

All Terrain technology is one of those technological advances that has the potential to generate a huge impact. The dual-pipe system lets operators control how much fluid is used on varying job sites. And, by keeping drilling fluid to a minimum, HDD crews can decrease the risk of inadvertent returns and stay efficient and profitable on any job site.

HYDRAULIC BREAKER
Used for construction and demolition, our breakers can be used to break up asphalt, concrete or even clay. The hydraulic hammer is perfect for any small or medium job you might have. More up-time in the field is always the goal, and with only two moving parts and a few seals, there’s no reason for down-time.
Compatible Models

SK600, SK800, SK900, SK1050, SK1550, SK1750

ROCK SAW

Best suited for irrigation and fiber installation, the Rock Saw attachment can effortlessly cut through rock, concrete, and other tough materials with unmatched precision. 

Compatible Models

SK1050, SK1550, SK1750

BACKHOE
Easily move materials for rebuilds, new construction, footings, utility repairs and more with this compact and versatile attachment.
Compatible Models

SK800, SK900, SK1050, SK1550, SK1750

STUMP GRINDERS
Featuring a heavy-duty boom design, powerful stump grinding attachments quickly shred stumps down to nothing. Easy maneuvering from stump to stump and increased visibility turns more ground stumps into more profit.
Compatible Models

SK600, SK800, SK900, SK1050, SK1550, SK1750, SK3000

MULTITASK TOOL
Your multipurpose tool for the ultimate multi-tasker is here. Engineered to grab tight to heavy materials and move them with ease and precision, the multi-task tool is your go-to for heavy applications. Easy to operate with convenient, functional levers.
Compatible Models

SK600, SK800, SK900, SK1050, SK1550, SK1750

CORE DRILL
With the MC-450 coring attachment, utility maintenance is simple and less disruptive. Featuring intuitive controls and an integrated water tank, the MC-450 is the perfect choice for quick cuts and a more productive coring process. A fully adjustable 0 to 280 rpm speed allows for enhanced control and greater productivity.
Compatible Models

SK1050, SK1550, SK1750

SOIL CULTIVATOR
Prepare food plots, gardens, and landscaping projects with a soil cultivator. It gets land ready by stirring organic material back in the soil for a healthier, more stable lawn. Buries the biggest of rocks for a looser topsoil.
Compatible Models

SK600, SK800, SK900, SK1050, SK1550, SK1750

BLADES
Whether you’re looking to increase dump height or digging depth, attaching a backfill blade is an easy way to save manpower on your jobsite while working with precision and timeliness. Available in various widths.
Compatible Models

SK600, SK800, SK900, SK1050, SK1550, SK1750

AUGER DRIVER
Ideal for landscaping and tree care, an auger attachment will expedite hole creation and allow operators to quickly plant trees or install fence posts than if they were hand-digging or relying on a hand-held auger. Available in 6" to 30" diameters.
Compatible Models

SK600, SK800, SK900, SK1050, SK1550, SK1750

TILLER
Tough and effective tillers prepare your garden by breaking up tough soil and removing unwanted weeds. Available in 4' width.
Compatible Models

SK600, SK800, SK900, SK1050, SK1550, SK1750

GRAPPLES
Tree grapples come with 48" or 57" openings to efficiently remove logs and debris from the jobsite. It has an excavator style boom design with a powder coat finish and a cylinder lock for increased safety. Brush grapples available with a gap opening of 29" and widths of 42" or 54".
Compatible Models

SK600, SK800, SK900, SK1050, SK1550, SK1750

CARRY ALL LEVELER
One of our most simple yet versatile attachments, the Carry-All Leveler is perfect for carrying bulky material, leveling soil and adding a flat, smooth finish to your project. Available in 49" width.
Compatible Models

SK600, SK800, SK900, SK1050, SK1550, SK1750

BUCKETS
Turn one machine into a multi-functional workhorse with versatile Ditch Witch® SK attachments. From landscaping and hardscapes to tree care and construction-grade tasks, your stand-on skid steer can take on more than you think. We've got you covered with a variety buckets from 4-in-1 to heavy and light material buckets. Widths range from 34" to 66".
Compatible Models

SK600, SK800, SK900, SK1050, SK1550, SK1750, SK3000

PALLET FORKS
Take on your heaviest loads with precision and dependability with Ditch Witch pallet forks. They easily attach to any of our skid steers and can easily accessorize with hay spikes, brick guards, and much more to add even more ROI. Available in widths ranging from 36-48.75" and lengths from 36-48".
Compatible Models

SK600, SK800, SK900, SK1050, SK1550, SK1750, SK3000

MICROTRENCHER
Fiber installation and other street-located work is rapidly growing. A microtrenching attachment is key for operators looking to get into fiber installation at the street level. They cut both concrete and asphalt in controlled increments so contractors don't need to stop traffic. Maximum width options are 0.5-1.5” or 2” with maximum depths of 12” or 16”.
Compatible Models

SK1050, SK1550, SK1750, SK3000

ROTO WITCH®
The Ditch Witch Roto Witch® attachment is used for short bores underneath sidewalks, driveways and other obstacles. It offers great digging performance while minimizing jobsite restoration. Compatible with numerous Ditch Witch stand-on skid steers, the Roto Witch attachment can bore and backream up to 12" (300 mm) in diameter.
Compatible Models

SK600, SK800, SK900, SK1050, SK1550, SK1750

PLOW
Install fiber and other utilities quickly with a vibratory plow attachment for your skid steer. It creates less ground disruption and cleanup than traditional trenching to get the job done faster. Available in maximum depths of 14" and 24".
Compatible Models

SK600, SK800, SK900, SK1050, SK1550, SK1750, SK3000

POWER RAKE
Clean, level and prep jobsites or smooth and loosen soil for sodding with a rake attachment. Most rake attachments require 10 to 14 gpm, but the higher horsepower creates even more drum torque to tear through the most demanding soil types. Width measures 4'.
Compatible Models

SK600, SK800, SK900, SK1050, SK1550, SK1750

MICROTRENCHERS
Fiber installation and other street-located work is rapidly growing. A microtrenching attachment is key for operators looking to get into fiber installation at the street level. They cut both concrete and asphalt in controlled increments so contractors don't need to stop traffic. Maximum width options are 0.5-1.5” or 2” with maximum depths of 12” or 16”.
Compatible Models

SK1050, SK1550, SK1750, SK3000

ROTO WITCH®
The Ditch Witch Roto Witch® attachment is used for short bores underneath sidewalks, driveways and other obstacles. It offers great digging performance while minimizing jobsite restoration. Compatible with numerous Ditch Witch stand-on skid steers, the Roto Witch attachment can bore and backream up to 12" (300 mm) in diameter.
Compatible Models

SK600, SK800, SK900, SK1050, SK1550, SK1750

PLOWS
Install fiber and other utilities quickly with a vibratory plow attachment for your skid steer. It creates less ground disruption and cleanup than traditional trenching to get the job done faster. Available in maximum depths of 14" and 24".
Compatible Models

SK600, SK800, SK900, SK1050, SK1550, SK1750, SK3000

TRENCHER

Stay efficient on large jobsites with a trencher attachment for your skid steer. It’s a smart alternative to large, specialized equipment for utility installation and landscaping jobs. Available in standard 6”, 8” and 12” maximum widths with maximum depths of 36", 38", 48” and 55.5”.

Compatible Models

SK600, SK800, SK900, SK1050, SK1550, SK1750, SK3000