case studies of particle imaging technology for differentiating particles in produced water kent...
TRANSCRIPT
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Case Studies of Particle Imaging Technology for Differentiating Particles in Produced Water
Kent Peterson
Fluid Imaging Technologies, Inc.
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Outline
• What is Dynamic Imaging Particle Analysis?
• Examples of Particle Imaging for Calculating Oil and Solids in Produced Water.
• Limitations and Best Cases for Using Particle Imaging in Produced Water
• Questions
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What is Dynamic Imaging Particle Analysis?
• “Automated Microscopy”• Sample is Moved Through Optical Path
“Dynamically” & Imaged in Real-Time• Large Number of Measurements/Particle
Enables Differentiation by Shape• “Shape Filters” Automatically “Bin” Particles
Into Different Types• High Quantity of Particles Measured Yields
Higher Statistical Confidence
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How It WorksFlow Cell View
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FlowCam® Overview
• Collects size, shape, and count data upwards of 50 particles/frame at 20 frames/second (~60,000 particle/min)
• Allows query and examination of individual particle microscopic images and associated morphology
• Wide particle size range of 5µm-2mm• Low sample volume (usually a few ml)• Total Magnification from 20x to 200x
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FlowCAM Models
Benchtop Portable
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How It WorksImaging Mode
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Ideal CaseJust Oil in Water
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Set Droplet & Solids Densities
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Ideal CaseOnly Oil Droplets in Water
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11
Real Case Has SolidsNeed to Handle Solids Too
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But What About Agglomerated Oil Droplets?
Oil Droplets Can Also Adhere to Solids or to Each Other
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How to Handle Agglomerated Oil Droplets
• Methodology Used:1. Detect Full Particle Image
2. Detect Edges on Image
3. Identify Circular Arcs
4. Fit Circles to Arcs
5. Calculate Spherical Volume of Each Circle
6. Left over material is TSS
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Example of Methodoriginal image
edges separated circles identified
arcs identified
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Example: Single Droplet
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Example: Oil Agglomerate
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Texas A&MTishomingo Field Study
• Raw Water Feed• Highly Agglomerated• Average of Three Runs
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Texas A&MTishomingo Field Study
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Texas A&MTishomingo Field Study
• FlowCAM• 25 mg/L oil
• Independent Lab Analysis• 35 mg/L oil
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CanadaHeavy Oil Field Study
• Evaluated Thee Production Areas
• Highly Agglomerated• Average of Three Runs• Compared to UV Methods
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Production Pads #1 & #2
FWKO Skim Tank
FlotationUnit
Inlet oil at > 2000 mg/L Sample points
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Production Pad #1Skim Tank Outlet
37,000 p/ml
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Production Pad #1Skim Tank Outlet
• FlowCAM• Oil – 9 mg/L
• UV Oil • 20 mg/L
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Production Pad #1Flotation Unit Outlet
1,600 p/ml
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Production Pad #1Flotation Unit Outlet
• FlowCAM• Oil – 0.6 mg/L
• UV Oil • 1.7 mg/L
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Production Pad #2Skim Tank Outlet
• FlowCAM• Oil – 17 mg/L
• UV Oil • 7 mg/L
45,000 p/ml15 um D50
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Production Pad #2Flotation Unit Outlet
• FlowCAM• Oil – 3 mg/L
• UV Oil • 3.5 mg/L
18,000 p/ml8.4 um D50
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Production Pad #3
FWKO Flotation Unit
Oil RemovalFilters
Inlet oil at > 6000 mg/L Sample points
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Production Pad #3Flotation Unit Outlet
• FlowCAM• Oil – 1.5 mg/L
• UV Oil –• 5 mg/L
3,900 p/ml40 um D50
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Production Pad #3Filter Unit Outlet
• FlowCAM• Oil – 0.6 mg/L
• UV Oil • 5.6 mg/L
800 p/ml40 um D50
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Limitations of FlowCam Method
• Look at droplets down to 5 um• Works best on suspended oil
droplets rather than on globs of free oil where sample is not so saturated that oil droplets are clearly visible
• Can be used for oil in water or water in oil