(EOR/MEOR/BERO/oil recovery) After shut-in for 5 days, Well Kentrick 9 resumed production and then its production greatly increased. Its daily oil production increased from 5.9 BOPD to 22.2 BOPD and waterproduction decreased from 36.5 BWPD to 25.2 BWPD.

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 Jinji
Lake Avenue,Jiangsu Province, P.R. China.
Zip: 215123
Tel: +86 512-6999 5236 Fax: +86 512-6999 5237
E-mail: contact@zfatech.com
Application of BERO™ Biosurfactant in Oklahoma and Its Effect
In November 2007, the Company applied BERO™ biosurfactant in 21 oil wells
of an energy company located in Will County and Cotton County, Oklahoma to
remove plugging and stimulate production. Oil wells were completed in the
shallow formations of Austin Chalk City/Pecan Gap City. The lithology of oil
reservoir is characterized by chalk. Southern Texas high sulphur crude oil is
produced from the oil wells and its API gravity reaches 35-42 degrees. It
contains acid and its edge is sweet. It contains H2S and water contained is the
water of the same formation.
The analysis result shows that the main reason for production reduction is the
plugging of the near-wellbore zone caused by organic matters such as wax
and asphalt contained in crude oil. Full plugging removal is conducted
according to the production need and the requirements of geological solution
of these 21 oil wells. The injection of BERO™ biosurfactant as the plugging
removal agent can lower water cut, stabilize oil and control water cut and
stimulate the production of crude oil.
Within 6 months upon injection, the oil production of 21 production wells within
the area of action greatly increased, wherein, the crude oil production of 16 oil
wells increased by 2.8 times and that of the rest oil wells increased by 1.7
times on average. The oil recovery rate of this block was improved by 69%.

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 Jinji
Lake Avenue,Jiangsu Province, P.R. China.
Zip: 215123
Tel: +86 512-6999 5236 Fax: +86 512-6999 5237
E-mail: contact@zfatech.com
As for Well Kentrick 9, the analysis result shows that the main reason for
production reduction is the plugging of the near-wellbore zone caused by
organic matters such as wax and asphalt contained in crude oil. In November
2007, BERO™ biosurfactant was mixed with formation water and injected in
Well Kentrick 9 to remove plugging and stimulate production and the
temperature of the injection fluid was above 122℉. During construction,
pressure rose from 0 psi to 1450 psi.
After shut-in for 5 days, Well Kentrick 9 resumed production and then its
production greatly increased. Its daily oil production increased from 5.9 BOPD
to 22.2 BOPD and waterproduction decreased from 36.5 BWPD to 25.2
BWPD.

3. www.zfatech.com
UNITED STATES
Add: 12212 Ashling Dr Stafford, TX, 77477
Tel: +1713 893 4784
CHINA
Add:Nanopolis Suzhou: NW02, Room 110, 99 Jinji
Lake Avenue,Jiangsu Province, P.R. China.
Zip: 215123
Tel: +86 512-6999 5236 Fax: +86 512-6999 5237
E-mail: contact@zfatech.com
As for Well Creek 1, the analysis result shows that the main reason for
production reduction is the plugging of the near-wellbore zone caused by
organic matters such as wax and asphalt contained in crude oil. In November
2007, BERO™ biosurfactant was mixed with formation water and injected in
Well Creek 1 to remove plugging and stimulate production and the
temperature of the injection fluid was above 122℉. During construction,
pressure rose from 0 psi to 1450 psi.
After shut-in for 5 days, Well Creek 1 resumed production and then its
production greatly increased. Its daily oil production increased from 5.7 BOPD
to 21.9 BOPD and waterproduction decreased from 13.1 BWPD to 14.1
BWPD.
In June 2008, we applied BERO™ treatment for an oil well located at Wood
County, Oklahoma State.The oilfield, comprising 24 production wells, has a
geological reserve of 1.55 million tons and initial water cut of 92.2%.

4. www.zfatech.com
UNITED STATES
Add: 12212 Ashling Dr Stafford, TX, 77477
Tel: +1713 893 4784
CHINA
Add:Nanopolis Suzhou: NW02, Room 110, 99 Jinji
Lake Avenue,Jiangsu Province, P.R. China.
Zip: 215123
Tel: +86 512-6999 5236 Fax: +86 512-6999 5237
E-mail: contact@zfatech.com
Within 8 months upon injection, the oil production of 19 production wells within
the area of action greatly increased, wherein, the crude oil production of 12 oil
wells increased by 2 times and that of the rest oil wells increased by 1.3 times
on average. The oil recovery rate of this block was improved by 77%.

5. www.zfatech.com
UNITED STATES
Add: 12212 Ashling Dr Stafford, TX, 77477
Tel: +1713 893 4784
CHINA
Add:Nanopolis Suzhou: NW02, Room 110, 99 Jinji
Lake Avenue,Jiangsu Province, P.R. China.
Zip: 215123
Tel: +86 512-6999 5236 Fax: +86 512-6999 5237
E-mail: contact@zfatech.com
As for Well Hall 3-1, the analysis result shows that the main reason for
production reduction is the plugging of the near-wellbore zone caused by
organic matters such as wax and asphalt contained in crude oil. In June 2008,
BERO™ biosurfactant was mixed with formation water and injected in Well
Hall 3-1 to remove plugging and stimulate production and the temperature of
the injection fluid was above 122℉. During construction, pressure rose from 0
psi to 1450 psi.
After shut-in for 5 days, Well Hall 3-1 resumed production and then its
production greatly increased. Its daily oil production increased from 6.8 BOPD
to 20.7 BOPD and waterproduction increased from 31.1 BWPD to 34.4 BWPD.

6. www.zfatech.com
UNITED STATES
Add: 12212 Ashling Dr Stafford, TX, 77477
Tel: +1713 893 4784
CHINA
Add:Nanopolis Suzhou: NW02, Room 110, 99 Jinji
Lake Avenue,Jiangsu Province, P.R. China.
Zip: 215123
Tel: +86 512-6999 5236 Fax: +86 512-6999 5237
E-mail: contact@zfatech.com
As for Well Pole 5, the analysis result shows that the main reason for
production reduction is the plugging of the near-wellbore zone caused by
organic matters such as wax and asphalt contained in crude oil. In June 2008,
BERO™ biosurfactant was mixed with formation water and injected in Well
Pole 5 to remove plugging and stimulate production and the temperature of the
injection fluid was above 122℉. During construction, pressure rose from 0 psi
to 1450 psi.
After shut-in for 5 days, Well Pole 5 resumed production and then its
production greatly increased. Its daily oil production increased from 5.6 BOPD
to 16.6 BOPD and waterproduction decreased from 52.4 BWPD to 46.6
BWPD.