Slurry Fracture Injection
SFI Technology
To describe our technology in it's most basic terms, the waste material is screened to a specified injection criteria, and then slurried in a stream of water (i.e. mix water) as required. The slurry is made with as high a waste concentration as possible (10-30%), and pumped down a waste disposal well at in-situ fracturing pressures. Extensive monitoring is utilized during the Terralog-SFI operations to ensure effective process control.
Suitable Waste Materials
Petroleum Exploration & Production (E & P) waste:
• Produced solids
• Oily viscous fluids/sludge
(OVF)
• Tank bottoms
• Contaminated soils
• Drill Cuttings and Fluids
• Naturally Occurring Radioactive Material (NORM)
The SFI process can be used to dispose of suitable mining wastes such as sludges and fine tailings.
Terralog also provides its SFI services to manage municipal waste streams:
• Waste water treatment sludge
• Biosolids
• Contaminated soil
• Incinerator ash
Subsurface Geothermal Treatment
Environmental Advantages
There are significant environmental advantages to using the SFI process for management of E&P waste streams:
- Large volumes of oilfield wastes are being returned to ‘place of origin'; eliminating or reducing the need for surface disposal of these waste streams;
- Deep well disposal technology places material far below any usable drinking water source, eliminating the potential for groundwater contamination due to downward percolation from the surface;
- SFI provides a permanent disposal option for the oil production wastes and no long term interaction with the biosphere (i.e. zero discharge' of these wastes into the environment/biosphere);
- SFI reduces the impact on surface land use – i.e. no need for disposal landfills or lagoons; there is no impairment of future land use;
- Surface odor and emissions problems are reduced; Greenhouse Gas (GHG) and CO2 emissions are reduced.
- SFI provides a flexible, year-round, all weather option for waste management;
Copyright ©2005 Terralog Technologies Inc., All Rights Reserved.
SFI™, Slurry Fracture Injection™, TTI™, Terralog™, and SFI-Slurry Fracture Injection™ are trademarks of Terralog Technologies Inc.
