EOR Produced Water Recycling Derek Mandel Director of Technology, - - PowerPoint PPT Presentation
EOR Produced Water Recycling Derek Mandel Director of Technology, Flex EDR 1 Project Overview Desalination of oil and gas produced water Desalination saves chemical costs (polymer), which pays for water treatment and yields return on
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water
(polymer), which pays for water treatment and yields return on investment, improving EOR economics
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POLYMER MIXING
POLYMER MAKEUP WATER
PRODUCED WATER RETURN INJECTION
TDS: 5,000-15,000 mg/L SALINE BRINE DISPOSAL
OIL
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PRE FILTRATION EDR POLYMER MIXING
ELECTRICAL POWER CIP CHEMICALS ACID POLYMER MAKEUP WATER
PRODUCED WATER RETURN INJECTION
TDS: 5,000-15,000 mg/L TDS: 1500-2000 mg/L 90% VOLUME LOWER TDS REQUIRES LESS POLYMER SALINE BRINE DISPOSAL TDS: 60,000-70,000 mg/L 10% VOLUME EOR DESALINATION PLANT
OIL
EDR Stack
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Operating principle
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Desalinated Produced Water with Polymer Anion exchange membrane Cation exchange membrane Reject Concentrate Feed Concentrate +
Anions (e.g., SO4
2-, Cl-)
Polymer
EDR Stack
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To View Animation, visit: https://www.youtube.com/watch?v=ExMWiTvnUfg
including bleach
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Produced and Treated Water
1000 2000 3000 4000 5000 6000 7000 8000 Concentration (mg/L) Produced Water Treated Water 5 10 15 20 25 30 35 40 45 Concentration (mg/L) Produced Water Treated Water
20 40 60 80 100
600 800 1000 1200 1400 1600 1800 2000 2200
Viscosity (Cp) Polymer Concentration (ppm)
Produced Water, 7139 mg/L TDS Treated Water, 1961 mg/L TDS Treated Water, 1741 mg/L TDS Makeup Water, 1045 mg/L TDS
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Desalinated produced water used less polymer to reach target viscosity
polymer savings.
Polymer Savings
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