The ‘Slow & Easy’ Hydraulic Fracturing process is an alternative stimulation method developed by TTI for unconventional shale resource development. It is an innovative technique for the development of complex fractures in low permeability, naturally fractured reservoirs. The Slow & Easy process is a long-term, cyclic injection process with non-damaging, aqueous fluids at lower rates and net pressures to enhance conductivity of the natural fracture system. It is designed to improve and stabilize production; and is ideal for re-fracturing.
The Slow & Easy technique offers significant environmental advantages including smaller equipment footprint; improved wellbore integrity; reduced usage of chemicals & fresh water; reduced risk of ‘frac hits’ and significantly lower risk of induced seismicity.
How Is The Terralog ‘Slow & Easy’ Process Different?
- Slow & Easy HF process utilizes low injection rates, cyclic injection for progressive development of short, complex fracture networks.
- Geomechanic mechanisms improve overall natural fracture conductivity in tight formations.
- SRV occurs progressively from the well into the reservoir.
- Increased well spacing due to increased SRV.
- Slow & Easy HF process is an innovative HF process for shale resource development.
- Reduced environmental impact from stimulation & production operations.
- Improved water management.
- Reduced induced seismicity.
- Reduced risk of ‘frac hits’.
Slow & Easy Objectives:
- Use longer-term, cyclic, lower injection rates for a more effective conductivity enhancement of the natural fracture network through geomechanic mechanisms.
- Enhancement of the natural fracture network system in shales and NFRs, which is a key element to improved and sustained production.
- Achieve more stable & sustainable production rates over the life of the well.
- Increase Stimulated Reservoir Volume (SRV), leading to increased Estimated Ultimate Recovery (EUR).
- An alternative HF process that mitigates many of the concerns being raised regarding environmental security of large scale multi-stage hydraulic fracturing (MSHF) for shale resource development.
Slow & Easy Advantages:
The Slow & Easy process offers significant advantages:
- Improved water management
- Reduced environmental impact:
- maintain wellbore integrity;
- minimize use of chemicals & fresh water;
- reduced risk of induced seismicity
- Re-fracs: a viable re-frac technique; integrated water management & re-frac operations
- Wellbore asset protection: extends well life; reduced risk of ‘frac-hits’ at offset wells