This document provides contact information for ZFatech in the United States and China, and summarizes the advantages of BEROTM enzyme technology over other enhanced oil recovery (EOR) methods such as acidizing and fracturing. BEROTM uses enzymes rather than bacteria to improve oil recovery rates. It is more effective and environmentally friendly than other EOR methods as it is non-toxic, biodegradable, and does not corrode or pollute pipelines. BEROTM also has higher success rates and oil gains compared to other enzyme technologies, remains stable for over 12 months, and can operate at higher temperatures.

1. www.zfatech.com
UNITED STATES
Add: 12212 Ashling Dr Stafford, TX, 77477
Tel: +1713 893 4784
CHINA
Add:Nanopolis Suzhou: NW02, Room 110,
99 JinjiLake Avenue,Jiangsu Province, P.R. China.
Zip: 215123
Tel: +86 512-6999 5236 Fax: +86 512-6999 5237
E-mail: contact@zfatech.com
Technology Comparison
BERO™’s Advantages over Other EOR Technologies_ Acidizing,
Fracturing and Polymer Flood
 BERO™, with water-wet characteristic, can be in very low concentrations
(0.5%) with the same density as water. BERO™ is able to go further in
reservoirs to form much bigger radium scopes.
 BERO™ can absorb on rock surface tightly to keep the rock water-wet,
which peels off oil and secondary sediments, and prevents wax block. As a
result, reservoir permeability is improved.
 BERO™ is a non-acid preparation, which does not cause any secondary
pollution and disorders of oil-water separation and sewage disposal
systems. Its work does not generate any new material and not cause any
jam in porous medium.
 BERO™ is biodegradable, which does not corrode and pollute pipelines,
facilities and surrounding environment. BERO™ is a green product since
it’s harmless to human beings and animals.
 BERO™ complies with the HSE requirements completely in the oilfield
operations.
Method BERO™ Enzyme Acidizing
Material Types
Liquid, non hazardous,
environmental friendly
Liquid, acidic, harmful to human
being and reservoir.
Execution
Process
Bull heading/Huff and Puff
Bull heading, sometime coil tubing
unit is needed.
Operational Unit
BERO enzyme, High injection
pump and storage truck
Acid, storage tank, Acid pumper and
Coil tubing unit etc.
Chemical
Handling
Easy and safe handling. Non
toxic
Extra cautious, dangerous to human
being. Required post treatment.
Effective cost Low Higher than BERO™.
Comparisons with other Enzyme technologies
Enzyme 1
(US company)
Enzyme 2
(Norway)
BERO™
Success Rate 80% 90% 90%up
Oil Gain % 50% 20% ≥120%

2. www.zfatech.com
UNITED STATES
Add: 12212 Ashling Dr Stafford, TX, 77477
Tel: +1713 893 4784
CHINA
Add:Nanopolis Suzhou: NW02, Room 110,
99 JinjiLake Avenue,Jiangsu Province, P.R. China.
Zip: 215123
Tel: +86 512-6999 5236 Fax: +86 512-6999 5237
E-mail: contact@zfatech.com
Effective period 3-6 months 12 months 12 months up
Stability No Yes Yes
Application IFT Reduction
IFT Reduction
Reservoir Plugging
Removal
IFT Reduction
Reservoir Plugging
Removal
Max Temperature 70°C 180°C 220°C
Comparisons with other MERO technologies
Two groups technologies of Microbial Enhanced Oil Recovery
(MEOR):External biological recovery (bacteria method) and Biological enzyme
recovery.
 External biological recovery technology utilizes bacterial reaction to oil
recovery, which has to include bacterial selection, survival, flexibility,
reproduction, reaction, degeneration, and etc. These complex processes
make tons of imperfection and low effectiveness.
 On the other hand, BERO™ technology has its biological enzyme directly
work on reservoir rock and fluids. Enzyme is a worldwide recognized
microorganism with stabilization, moderation and constancy, which
facilitates to a reaction without any change on itself. It brings high
efficiency with mild reaction conditions, low energy consumption, no
pollution and easy control.
 The experiments show BERO™ can drop the oil content in mud to 0.20%
in 60 seconds. Moreover, the adaptability of BERO™ is high, it is not
affected by any changes of temperature, pressure, acid and water is
salinity. BERO™’s work lasts longer than other MEOR technologies.
 Besides, external biological recovery technology needs a lot of analysis
and researches before operations and has to be monitored and studied
after operations, which makes it difficult to be understood by the field
personnel.
 While, with little manpower request, BERO™ only needs some current
information of the oil wells without such analysis and researches before
operations and no surveillance is needed during or after operations.
In a word, BERO™ is one of the best technologies in the world in terms of
enhanced oil recovery and environment protection which could bring a
revolutionary progress for EOR.