Removing Problematic Sulphates from Abundantly Available Seawater to Boost Oil Recovery ...

20 Pages·2017·2.61 MB·English

Removing problematic
sulphates from
abundantly available
seawater to boost oil
recovery operations
GE WATER &
PROCESS
TECHNOLOGIES
Nauman Rashid
Marketing Director - MEA
AIml Kaghionbaatri oOnc atotb wero r1k9., 2017 *
Trademark of General Electric
Company, may be registered in one
or more countries.
Saudi Arabia and Water Sustainability
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Credit: GWI Credit: GWI
Annual non-renewable water Use of renewable water
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Credit: IOSR-JCE
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Credit: GWI
TSE Reuse Aquifers abstraction > 90% non-renewable water
The O&G Water Journey
SeaWater Produced Water Oil
Why remove sulfate?
• Prevents strontium and barium
sulfate scale in injection wells
• Better well souring mitigation by
reducing the incoming sulfate
Water
Solids Removal and NanoFiltration (NF)
Nano Filtration based water softening
NF Capabilities
• Membrane based treatment
Ion ~ Reduction
• Reduces Mono, Di and Tri-valent ions
Na, K, Cl 3 - 12 %
• High recovery (~ 70% vs. ~ 45% for RO)
• Smooth surface leading to minimal fouling Ca, Mg 84 - 96%
• Minimizes chemical consumption SO 99 %
4
Overall TDS 19%
GE Technologies for Seawater Injection
Ultra Filtration (UF) Nano Filtration (NF) Reverse Osmosis (RO)
Membrane
Fiber ZW500
Introduction of new NF
ZW1500 elements for sulphate removal
• Sulphate removal for • Sulphate removal and
• Removes solids > 0.01 µm reservoir souring and salinity reduction for EOR
• Enables matrix flooding scales prevention
Advanced pre-treatment: Ultrafiltration
GE has one of the most diversified UF technology
portfolios with a significant global installed base GE ZW700B: Optimized
across many industries for Offshore O&G
Sulfate Removal by Nanofiltration (NF)
• Proprietary sulfate removal NF membrane for O&G
• Excellent sulfate and hardness removal properties
• An absolute barrier for any suspended matter including
particles, colloidal silica and bacterial matters
• 3-layer design minimizes fouling and maximizes life
• Minimizes scale formation, well plugging, well souring
• Maximizes area per element to reduce footprint & weight
• Fabricated using state of the art automated
manufacturing process to ensure quality consistency
GE Surface
Polyamide
Proprietary roughness
Thin Film
Layer magnification.
Minimizes
fouling
adherence.
Polysulfon
Polyester non
e GE proprietary 440 ft2 400 ft2
woven material
Layer Classic PA layer
layer
GE’s latest NF membrane mitigates scale and H S by significantly reducing sulfate, magnesium and
2
calcium present in seawater. It exhibits lower fouling, improved cleaning, and extended membrane life.
Typical Membrane Problems in a Sulfate
Removal Unit or Low Salinity System
Why problems occur Membrane issues System implications
• Small pore size of • Fouling and scaling
• High sulfate
NF and RO • Higher pressure
passage causes
membranes drop
scale in oil reservoir
• Concentration factor • Loss of flux
• High operation cost
• Membrane • Membrane
impacts project
roughness degradation
economics
• Chemical
incompatibility
Modular, Pre-Engineered Platforms
Vast Experience
Reliable
Scaleable
Quick
deliveries
UF System selection – horizontal multi
element vessel design
Standard Standard
RO or NF ZW700B
skid Skid