Deep Well Disposal Overview

Deep well disposal processes include:

Slurry Fracture Injection (SFI)

o     High pressure injection and rates (fracturing)
o     Large waste volumes
o     Multiple Petroleum Exploration & Production (E & P)
       waste streams:

• Produced solids
• Oily viscous fluids/sludge (OVF)
• Tank bottoms
• Contaminated soils
• Drill Cuttings and Fluids
• Naturally Occurring Radioactive Material
   (NORM)

o     Suitable mining waste streams (sludges and fine tailings)
o     Dedicated disposal wells

• Cuttings Re-Injection (CRI)

o    Moderate/low injection pressure and rates
o    Small waste volumes
o    Drilling wastes from drilling a well (muds, cuttings)
o    Disposal into annulus of drilled well

• Water Injection/Disposal

o    Low injection pressure, high rates
o    Large waste-water volumes (produced water, etc)
o    Dedicated disposal wells

Typical depths for all of these deep well disposal processes are greater than 300 meters.

Terralog provides complete regulatory support, project design, project management, technical support and field operations for SFI.

Terralog provides complete regulatory support, project design, project management and technical support for CRI.