T-REX

A Drilling Rig that roars!

Like the king of the dinosaurs, the T-REX is designed to be the king of geothermal and exploration drilling. This beast of a track drill will dominate the toughest terrain and conquer the most challenging drilling conditions with ease.

RAW POWER

With up to 70,000 lbs of pullback, dual rotary, and angle (45o – 90o) drilling capabilities, the T-REX muscles through stubborn formations — driven by a powerful deck motor, and outfitted with an up to 1200 CFM 500 PSI air compressor to make sure your deep holes stay clean.

FLEXIBILITY

The T-REX can be outfitted in many configurations to suit your specific needs. These include mud or air rotary top head, reverse circulation, flooded reverse circulation, and dual rotary.

OFFSYDER

The T-REX comes standard with the Offsyder, designed to make hands-free rod handling fast, safe, and easy!

CABIN

Stay clean, dry, and focused with a climate-controlled articulating cab that allows you to drill in comfort and shields you from harsh weather — and those relentless bugs!

Download Spec Sheet

The next evolution in drilling has arrived! The Derex Offsyder is an innovative handsfree approach to rod handing that guarantees increased productivity and safety on the job site. The Offsyder can handle 9 4.5″ rods or 12 3.5″ rods in each magazine, and is able to stack 2 magazines at a time, allowing you to pull rods without stopping to change magazines. With safety being our top priority, the Offsyder was designed to be the safest rod handing system ever built, ensuring you avoid common and unnecessary accidents associated with traditional rod handling systems.

Derex T-REX Specifications

Download Spec Sheet

Hydraulic System
Sundstrand, Bosch Rexroth plus gear pump

Top Head
Variable torque and RPM with 2” thru-hole
0-160 rpm @ 0-8000 lbf

Lower drive
Variable torque and RPM with 10” thru-hole
0-23 rpm @ 18,000 lbf

Diverter
Simple seal design with 4” NPT discharge
to control cuttings.

Derrick & Feed System
26’ top head stroke
30,000-70,000 lbs pullback
20,000 lbs pulldown
120 FPM

Air Compressor
Vanair/ Sullair 900 cfm- 1150 cfm @ 350 psi.

Deck Engine
John Deere 14 litre or 18 litre deck engine.

Main Winch
12,000 lb.
Hydraulic 135 degree jib.
2,500 lb.
Remote on helpers side for winch

Cab Controls
Heated and cooled cab with wipers and lights
Main hydraulic controls all pilot operated
Drill switch to automate more of the monotonous tasks
Marine grade electric switches (for lights)

Levelling Jacks
Four 36” stroke independently controlled

Night Lights
6 LED night lights

Overall Dimensions
Length: 38’
Width: 8’ 6”
Derrick up height: 42’ 
Derrick down height: 11’6″

Water Injection
9 gpm FMC injection pump

Gross Weight
50,000 -55,000lbs

Derex T-REX OPTIONS

Sand Line Winch
1,500’ sand line

Mud Pump
3x2x13 centrifugal 300 gpm/300 psi
Centerline piston 150 gpm/600 psi

Line Oiler
Many oilers available

Water Injection
18 gpm FMC injection pump

Drill pipe packages

Wire feeder and box

Hydraulic or gas welders