CHEMICAL TRACERS, INC.

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CHEMICAL TRACERS, INC.
Single Well Chemical Tracer Testing Services
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Chemical Partitioning
Chemical Partitioning of Tracer i between Phases
OIL
WATER
Ci (Oil)
Ki
at Equilibrium
Ci (Water)
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Single Well Chemical Tracer Test For Residual Oil
Saturation
Sw
Sor
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EtAc H2O EtOH HAc
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Step 4 Production Period (Continued)
Sw
Sor
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Single Well Chemical Tracer Test Production
Profile
2000
300
Material Balance Tracer
1800
250
1600
1400
200
150
Concentration Tracers (ppm)
Concentration Tracers (ppm)
Un-reacted Ester Tracer
100
Product Alcohol Tracer
50
0
0
0
0
500
1000
1500
2000
Volume Produced (bbls)
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Single Well Chemical Tracer Test Production
Profile
2000
300
Q
1800
Ki Sor
250
ß
1600
Q/(1ß)
(1-Sor)
1400
200
Ki Ci(oil)/Ci(water)
1200
1000
150
Sor ß/(ß Ki)
Concentration Tracers (ppm)
Concentration Tracers (ppm)
800
Un-reacted Ester Tracer
100
600
Product Alcohol Tracer
400
50
200
0
0
0
0
0
500
1000
1500
2000
Volume Produced (bbls)
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TYPICAL SWCT INJECTION SYSTEM
FILTERS
PUMP
CHEMICAL DRUMS
BRINE
BRINE TANKAGE
CHEMICALS
MIXING POINT
POSITIVE DISPLACEMENT CHEMICAL PUMPS
STATIC MIXER
SAMPLER
TO GAS CHROMATOGRAPH FOR ANALYSIS
BOOSTER PUMP
PRESSURE GUAGE
FLOW METER
WELL
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TYPICAL SWCT PRODUCTION SYSTEM
GAS FLOW LINE
TO GAS CHROMATOGRAPH FOR ANALYSIS
SAMPLER
CALIBRATED TANK
PORTABLE SEPARATOR
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Sor Zero Case
Un-reacted Ester Tracer
Product Alcohol Tracer
Concentration Tracers (ppm)
Concentration Tracers (ppm)
Volume Produced (bbls)
20
1000
250
900
Sor 10 (K 5.0)
800
200
Product Alcohol Tracer
700
600
150
Un-reacted Ester Tracer
Concentration Tracers (ppm)
Concentration Tracers (ppm)
500
400
100
300
200
50
100
0
0
0
500
1000
1500
2000
2500
Volume Produced (bbls)
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1000
200
Product Alcohol Tracer
900
180
Sor 20 (K 5.0)
800
160
700
140
Un-reacted Ester Tracer
600
120
500
100
Concentration Tracers (ppm)
Concentration Tracers (ppm)
400
80
300
60
200
40
100
20
0
0
0
500
1000
1500
2000
2500
Volume Produced (bbls)
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Product Alcohol Tracer
Sor 30 (K 5.0)
Un-reacted Ester Tracer
Concentration Tracers (ppm)
Concentration Tracers (ppm)
Volume Produced (bbls)
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1200
500
450
Simulation
1000
400
Field Data
Secondary Tracer
n-propyl alcohol
350
800
300
Concentration n-Propyl Alcohol (ppm)
Concentration n-Propyl Formate (ppm)
600
250
200
Primary Tracer
400
150
n-propyl
Formate
100
50
0
0
200
400
600
800
1000
1200
1400
1600
1800
2000
Volume Produced (bbls)
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400
900
Simulation
800
350
Secondary Tracer
Field Data
Ethanol
700
300
600
Primary Tracer
250
Ethyl Formate
500
Concentration Ethyl Formate (ppm)
Concentration Ethanol (ppm)
200
400
150
300
100
200
50
100
0
0
200
400
600
800
1000
1200
1400
1600
1800
2000
Volume Produced (bbls)
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Summary of Test Conditions
Variable Range Interval
Height 8 to 104 feet Porosity 7 to
34 Reservoir Temperature 80 to 249 Deg.
F. Brine Salinity 1,200 to 270,000 ppm
TDS Permeability 4.5 to 6,000 md Oil Gravity 12
to 49 API Sor (PV) 7 to 45
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Single Well IOR Evaluation One-Spot Pilot
Local EOR Flood
Push Water
20 Feet
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IOR Processes Tested via One-Spot Pilot

• Surfactant-Polymer
• Lignin-Surfactant-Polymer
• Alkaline-Polymer
• Alkaline-Surfactant-Polymer
• Carbon Dioxide
• Miscible Hydrocarbon