Typical Properties and Field Applications
UniFrac technology was commercialized in 2010 successfully and has been applied in various oil and gas fields in the world. It has been proved to be effective in treatment of sandstone and carbonate reservoirs with the following conditions:
Temperature: |
BHST 65-300℉ (18-149℃) |
Typical gel loading: |
5-15 gal/Mgal |
Mix-water: |
Fresh or salt water |
Further information about field applications is described in documented “Case History of UniFrac Technology”.
Typical properties of UniFrac fluids are shown in the following Table and Figures.
Leak-off and Retained Permeability/Conductivity
Fluids
Crosslinked Guar
Crosslinked PAM
VES
Leak-off Coefficient Ct, ml/(inch2 × min1/2)
0.11
0.15
0.42
Retained Permeability, %
35
46
65
Retained Conductivity, %
40
62
87

Precautions and HSE Considerations
Gelling agent (KHF071), Crosslinker (KHF048)
and Breaker (KHF043) in UniFrac systems play the most important role in
treatment effectiveness. In addition, clay stabilizer (KHF002L) and flowback
additive (KHF007S) are generally used in UniFrac systems for better fluid
performance.
The laboratory procedures, quality assurance
program and guidelines for field mixing and handling of UniFrac systems are
described in UniFrac fluid manual.
Refer to the technical sheet and SDS of the
respective product for the health, safety and environmental information of each
product.