Drilling / Well Installation (up to 12″ Ø)

With a versatile fleet of rigs and diverse tooling, GEX is prepared for all sampling and monitoring well needs. Experienced driller and project managers are prepared for any size drilling project.

Tools:

• Hollow Stem Augers: 2 ¼”, 3 ¼”, 4 ¼”, 6 ⅝”, 8 ¼”, 12 ¼” ID
• Solid Flight Augers: 4″
• Tri-Cone Rotary Bits: 2 ⅞”, 3 ⅞”, 5 ⅞”, 7 ⅞”, 9 ⅞”, 12 ¼”, 17 ½”
• Wing Bits : 5 ⅞”, 6 ½”, 7 ⅞”, 9 ⅞”, 11 ⅞”
• Drill Rods: AW, BW, NW, Mayhew Jr., 3 ½ API, 4 ½ API
• Air Hammers: 4″, 6″, 8″
• Air Rotary Bits: 3 ⅞”, 6 ¼”, 7 ⅞”, 8 ¾”, 9 ⅞”, 11 ⅞”
• Cutting Diverter for Air Rotary
• Rock coring equipment: HQ/NQ core barrels for wireline and conventional coring
• Automatic SPT Hammer

Probing Services

A fleet of well-maintained machines, plus a variety of tooling, allows GEX to provide a full range of probing services.

Tools:

• Macrocore Samplers
• Screen Point Groundwater Sampler
• Piston Samplers for Discreet Sampling
• Dual Tube Samplers
• 2 ¼” Probe Rods
• 3 ¼” Probe Rods
• Geoprobe Grouters
• Soil Gas Samplers
• Automatic SPT Hammer

Injection Services

GEX has provided high quality injection services since the 1990’s with over 5 million gallons of material injected. This has given Geologic Exploration valuable experience with injecting all types of material including sodium permanganate, potassium permanganate, HRC, ORC, persulfate, hydrogen peroxide, 3Dme, and molasses.

Tools:

• Hydraulically Driven Rupe Pumps
• 2″ Packers for Pressure Injections in 2″ wells
• Mixing Vessels
• Heating Elements for High Viscosity Fluids

Geotechnical Sampling
All terrain drilling rigs, equipped with automatic SPT hammers, allow GEX to get geotechnical data even in uncertain conditions. Also, a combination rig can provide accurate blow counts during monitor well drilling:

Tools:

• Automatic SPT Hammer

Packer Testing

A variety of inflatable packer sizes and submersible pumps allow GEX to handle any type of packer sampling or injections. Single or straddle packers can be used depending on needs.

Tools:

• Inflatable Packers: 2″, 4″, 6″, 8″

Well Abandonment

Grouters allow Geologic Exploration to tremie grout wells in excess of 500’ deep.

Tools:

• Five Grout Machines
• Gardner-Denver 4 1/2 x 5 Mud Pump

Dewatering

Geologic Exploration can provide well installation to effectively dewater any site before and during construction. These wells can be used with submersible pumps or stinger systems.

Pump Service

A dedicated pump crew can handle all pump related issues. From installation to trouble shooting, GEX can handle all your pump needs.

Tools:

• Pulstar 6T Pump Truck
• Pulstar 5T Pump Truck