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Download Smart Water for EOR by Membranes Standup Reآ  Smart Water Production Options. Nanofiltration membrane

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  • Smart Water for EOR by Membranes

  •  PhD May 2015 – 2018  Supervisors: Prof. Torleiv Bilstad and Dr. Skule Strand

    Myself

  •  Membrane is a selective barrier separating ions

    Feed SW Retentate

    Permeate

    Permeate

    Cross Flow Membrane Separation

  • Low TDS Water + Chemicals

    Smart Water Production Options

    Nanofiltration membrane

    Seawater as feed and (retentate) stream from membrane

  • Why NF for Smart Water

    3000 N O

    K

    6500 N O

    K

  • SO42- and Mg 2+ spiking effects on Cl⁻ and Na+ membrane separation

    Cl- rejection decreased Na+ rejection decreased

    Ion spiking of feed water

  • SO42- and PO42- spiking effects on Cl⁻ and Na+ separation

    Very high solubility in seawater

  • Filtered Seawater NF

    RO NF Permeate

    NF Reject

    RO Feed

    RO Reject

    RO Permeate

    Smart Water

    TDS = 10 000 – 28 000 ppm

    Element ppm Na 10800 Cl 19500 Ca 400

    Mg 1200 SO4 2500 TDS = 34400

    Element ppm Na 9300 Cl 16700 Ca 350 Mg 1000 SO4 2400 TDS = 29750

    TDS < 500 ppm

    Combination of NF and RO membrane for smart water production

  • Produced Water for Smart Water

  • Marathon oil, 1990, North Sea Offshore SR 90 membrane plant

    Barium Scale in Oil Production

  • Ion rejection by NANO-BW-4040, NANO-SW-2540 and NF-270 (9 bar)

    Results

    0

    10

    20

    30

    40

    50

    60

    70

    80

    90

    100

    Na Cl Ca Mg Ba

    RE JE

    CT IO

    N , %

    L NANO-BW-4040 - 1:1.5 dilution NANO-SW-2540 - 1:3.5 dilution

  • Nutshell- Filter

    Coalescer NF

    NF/RO

    Permeate

    Retentate

    Permeate

    Retentate

    Seawater

    Diluted Brine for Re-

    Injection

    Re-use or Disposal

    Produced Water Flow

    Undesired increase of Na and Cl

    Re-use or Disposal

  • Conclusions

    No Excess Chemicals

    Sulphate Substitution by Phosphate?

    Energy Efficient

    Produced Water Reuse

    Fresh Water Saving

    Sustainability

    Smart Water for EOR by Membranes Slide Number 2 Slide Number 3 Slide Number 4 Why NF for Smart Water Slide Number 6 Slide Number 7 Slide Number 8 Produced Water for Smart Water Barium Scale in Oil Production Slide Number 11 Slide Number 12 Slide Number 13

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