This document summarizes PureLine Treatment Systems' use of chlorine dioxide (ClO2) to treat water in oil and gas operations. Some key points: - ClO2 is an effective, environmentally-friendly chemical that can eliminate bacteria, biofilm, hydrogen sulfide, iron sulfide and more. - PureLine uses ClO2 to treat various water systems like production wells, pipelines, and hydraulic fracturing equipment to maintain integrity, increase production and flow rates, and decrease downtime. - They have over 130 years of technical experience developing ClO2 treatment systems, and provide on-site equipment, testing, and customized treatment procedures.

1. PureLine Treatment Systems

2. Grace Brothers
Technology Environmental FinancialHospitality/Gaming Pharmaceutical
Parent Structure
Pureline operates
within the
Technology Group
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3. The challenge operators face…
• Protecting the well
to maximize
profitability
• What could harm the
well?
– Aerobic bacteria
– Anaerobic bacteria
– Scale species
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4. What is Chlorine Dioxide (ClO2)?
• A powerful and selective oxidant.
• Extremely effective environmentally
friendly chemical (not just a biocide)
against H2S, FeS, polymer damage,
bacteria, biofilm and emulsions.
• pH independent…effective at a
broad range.
• Environmentally friendly…EPA and
FDA approved.
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5. What is Chlorine dioxide (ClO2)?
• Effective at levels as low as .1
ppm…. Very measurable and
controllable
• Does not break cross-linked gels or
harm oil and gas….unless you want
it to
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6. 6
• Greg Simpson, PhD, Chem E, 35
years ClO2 Experience, ClO2
Author
• Brian Wrenn, PhD, Environmental
Engineer, 9 years ClO2
Experience
• John Sokol, Chem E, 32 Years
ClO2 (27 years at EKA)
• John Thangaraj, 16 Years ClO2,
PhD Chemistry; many ClO2
Patents
• Peter Deacon, Mech E, 30 Years
ClO2
• Andrew Brinkdopke, Chem E,
Process Engineer, 5 year ClO2
• Jim Moser, EE, 7 Year ClO2
The Tech Team
134 Years of Technical
Experience

7. Where is
Chlorine
Dioxide Used?
Beverage Industry
Legionella Control
Odor Control
Potable Water
Food Processing
Oil & Gas
Chill Loops and
Cooling Towers
Destroy Sulfides
Fruit and
Vegetable Wash
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8. On-the-fly treatment
• Benefits:
– Reduced chemical costs
– Minimal required contact
time
– Measurable through
proprietary PCA system
– Peace of mind water is
disinfected going down-
hole
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9. 9
Hydration units are a huge source
of bacteria and fouling
Are your tanks
really clean???
Traditional Chem-Add treatments really do not
clean the blender
PureLine’s ClO2 treats
the entire system

10. SWD Treatments
• Benefits
– Wellbore integrity
maintained
– Lowered pressures
– Increased injection
rates
– Decrease operational
downtime
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11. Poseidon/working tank treatments
• Benefits
– Eliminates SRB’s
which negatively
impact performance
of cross-linked gels.
– Treats iron
contamination to
avoid interference
with cross-linked
gels.
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12. Water flood treatments
• Benefits
– Maintain quality of product
produced
– Increased production
– Wellbore integrity maintained
– Maintain or increase injection rates
– Maintain or decrease pressures
– Corrosion of well mechanics
avoided
– Decreased production down time
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13. Production well treatments
• Benefits
– Increase production
– Maintain wellbore
integrity
– Avoid corrosion of
well mechanics
– Decrease production
down time
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14. Pipeline Treatments
• Benefits
– Decreased pressures
– Increased production
flows
– Increased life span of
the pipeline
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15. Spearhead treatments
• Benefits
– Treat formation with
indigenous or man-
made H2S
– Prevent sour wells
– Achieve higher
production
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16. PureLine Equipment
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17. Equipment
• Why use PureLine equipment?
– 25 Years Experience
– Oilfield ready - small chemical plant - designed to
make ClO2 on demand
– Generates 1 lb. – 80 lbs./hour
– 95% efficient
– All processes have dual components
– Few moving parts
• High reliability and low maintenance
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18. Reactor Housing
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19. Mobile Lab
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20. Puremax chemical storage
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21. CG-H Unit
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22. How can PureLine help?
• Pre-assessment review.
– Gather background information to
formulate risk assessment plan.
– Are you doing the right things to
minimize your risks now?
• Water supply
– Up-front water quality testing
• Disinfected completions equipment
– How clean is your frac equipment?
• Healthy Wells/Pipelines
– How do you prevent down-time?
• Day to day procedures
– Treatment/maintenance schedule
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23. Next steps…
• Follow up presentation:
– Greg Simpson: wrote the handbooks on ClO2
– Brian Wrenn: consultant for BP spill
• Water sampling and fluid compatibility
testing:
– Water quality testing to determine appropriate
ClO2 chemistry
– Gel sample testing to confirm ClO2 will not
interfere with fluid system
– Procedure designed to treat specific application
• Pilot study:
– A trial will be conducted with on site testing
– Follow-up testing is conducted to ensure
PureLine achieves desired results.
• Finalize equipment needs and chemical
deliveries
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24. Thank You