Derex Drilling Services - Mining & Exploration


Exploration Drilling

 Dual wall Reverse Circulation drilling
 Centre sampling or Conventional down hole hammer
 Casing Hammer for Alluvial / Placer sampling 
 Dual Rotary Casing for Placer sampling
 Ring bit system or ODEX for casing difficult formations
 Air Rotary or R.A.B. (rotary air blast)
 Reverse Circulation rotary drilling with water or air
 In-Verse Drilling for large diameter boreholes
 Angle Holes 45° +
 Sample Splitters 
 Multi purpose drilling rigs ( core, air rotary R.A.B., reverse circulation )
 High Volume, High Pressure air compressors for water laden formations 
 Compact Rig that can be flown in a C-130 Hercules
 Heli-portable Rigs

Diamond Core Drilling

 Hydraulic 300+m PQ Wireline Core  Heli-portable
 Skid rigs for rough terrain   
 ATV Portable
 Vertical or Angle Holes 45° +
 6" core for bulk sample

 Heli-Portable Reverse Circulation Drilling

 3 5/8" RC borehole to 200m 
 Vertical or Angle Holes 45° +
 Heli-portable with a Longranger 

Environmental & Geotechnical

 Monitoring Well installations 
 Acid Rock Drainage ( A.R.D. )
 Oxidation Sampling

Piling, Anchor Drilling

 Piling and Anchor sizes up to 24"
 Vertical or Angle Holes 45° +
 Ability to case difficult formations (permafrost, boulders, broken bedrock)

Complete Water Well Services

 Water wells 6", 8", 12" & 16"
 Dewatering wells
 Production wells
 Observation boreholes
 Air rotary with casing hammer
 Installation of stainless steel well screens from 4 slot to 250 slot
 Ring bit system for casing difficult formations
 Bedrock drilling with down-hole hammer
 Pressure Fracturing of bedrock wells
 Redeveloping of screens by "jetting"

Geothermal Drilling

 Dual Rotary Casing for overburden
 Ring bit system or ODEX for casing difficult formations
 Compact tracked rig
  







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