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 investment, improving EOR economics • Increased water reuse 2

Polymer Flood Enhance Oil il Recovery (E (EOR) POLYMER TDS: 5,000-15,000 mg/L POLYMER MAKEUP MIXING WATER SALINE BRINE OIL DISPOSAL PRODUCED WATER INJECTION RETURN 3

Polymer Flood Enhance Oil il Recovery (E (EOR) CIP ELECTRICAL ACID POLYMER CHEMICALS POWER LOWER TDS REQUIRES LESS POLYMER TDS: TDS: 1500-2000 mg/L 5,000-15,000 mg/L POLYMER PRE 90% VOLUME MAKEUP EDR FILTRATION MIXING WATER SALINE BRINE OIL DISPOSAL TDS: EOR DESALINATION PLANT 60,000-70,000 mg/L 10% VOLUME PRODUCED WATER INJECTION RETURN 4

Flex EDR EDR Stack Operating principle Anion exchange Cation exchange membrane membrane Concentrate Feed Concentrate - - - + + + - - - + + + Reject Reject Desalinated Produced Water with Polymer + Cations (e.g., Ca 2+ , Na + ) - 2- , Cl - ) Anions (e.g., SO 4 Polymer 5

Flex EDR EDR Stack To View Animation, visit: https://www.youtube.com/watch?v=ExMWiTvnUfg 6

IonFlux Ion Exchange Membranes • Robust chemically tolerant polymer • Selective ion removal & separation • Highly resilient to oxidizing agents, including bleach • Resilient in scaling and oily wastewaters • Temperature tolerance: 0 – 60 °C • pH tolerance: 0 - 12 7

Flex EDR Field Pilot Medicine Hat, Alberta September 2017 150 m 3 treated >90% uptime 24/7 Automated Operation 8 8

Water Chemistry 45 8000 40 7000 35 Concentration (mg/L) Concentration (mg/L) 6000 30 5000 25 4000 20 3000 15 2000 10 1000 5 0 0 Produced and Treated Water Produced Water Treated Water Produced Water Treated Water 9

Polymer Savings Desalinated produced water 100 used less polymer to reach target viscosity 80 Viscosity (Cp) • The data suggests 50% 60 polymer savings. Polymer Savings 40 20 0 600 800 1000 1200 1400 1600 1800 2000 2200 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 10

Thank You! derek.mandel@saltworkstech.com 11