walnut shell filters - oil & gas
DESCRIPTION
This must the discovery of the decade. Walnut shells are used to purify water from any sort of Contamination and has been a blessing for the Oil & Gas Sector.TRANSCRIPT
![Page 1: Walnut Shell Filters - Oil & Gas](https://reader034.vdocuments.site/reader034/viewer/2022051111/5563346dd8b42ad7398b57b8/html5/thumbnails/1.jpg)
Water Technologies
Walnut Shell Filters
Siemens Water Technologies
Redesigning for Offshore Use
Michael Howdeshell
Chad Felch
Eric Lorge
![Page 2: Walnut Shell Filters - Oil & Gas](https://reader034.vdocuments.site/reader034/viewer/2022051111/5563346dd8b42ad7398b57b8/html5/thumbnails/2.jpg)
Slid
e2
Water Technologies
Geography
-Siemens
-O&G offices
![Page 3: Walnut Shell Filters - Oil & Gas](https://reader034.vdocuments.site/reader034/viewer/2022051111/5563346dd8b42ad7398b57b8/html5/thumbnails/3.jpg)
Slid
e3
Water Technologies
Agenda
Walnut Shell Technology Background
Testing in North Sea
Taking Walnut Shell Technology Off-Shore
![Page 4: Walnut Shell Filters - Oil & Gas](https://reader034.vdocuments.site/reader034/viewer/2022051111/5563346dd8b42ad7398b57b8/html5/thumbnails/4.jpg)
Slid
e4
Water Technologies
ProducedWater
Water Treatment in Oil Field Industry
Tertiary Separation
Walnut shell filter
Coalescing filter
Cartridge filter
Sand filter
Secondary Separation
Dissolved Air Flotation (DAF)
Dissolved Gas Flotation (DGF)
Induced Gas Flotation (IGF)
Primary Separation
Hydrocyclone
API Separator
Plate Separator
Skimmer
![Page 5: Walnut Shell Filters - Oil & Gas](https://reader034.vdocuments.site/reader034/viewer/2022051111/5563346dd8b42ad7398b57b8/html5/thumbnails/5.jpg)
Slid
e5
Water Technologies
Separation Technology Spectrum
10,0001,000100101
Oil in Water Concentration (ppm)
Eff
icie
ncy
API
CPI
DAF, IGF, DGF
Hydrocyclone
Centrifuge
Membrane
Walnut Shell and
Coalescing Filters
1º
2º
3º
![Page 6: Walnut Shell Filters - Oil & Gas](https://reader034.vdocuments.site/reader034/viewer/2022051111/5563346dd8b42ad7398b57b8/html5/thumbnails/6.jpg)
Slid
e6
Water Technologies
How Do Walnut Shell Filters Work
Continuous pressurized media bed
Bed(s) cycle based on time or ΔP
Media is recharged using backwash cycles
Oil is adsorbed not absorbed
Used to removed SS and free oil
Walnut shell media have an equal affinity for oil and water
Very low attrition rate
![Page 7: Walnut Shell Filters - Oil & Gas](https://reader034.vdocuments.site/reader034/viewer/2022051111/5563346dd8b42ad7398b57b8/html5/thumbnails/7.jpg)
Slid
e7
Water Technologies
The Siemens Walnut Shell Filter Media
The Black Walnut Shell
Excellent surface characteristics for
Coalescence
Filtration
High “modulus of elasticity”
Chemical free oil separation
![Page 8: Walnut Shell Filters - Oil & Gas](https://reader034.vdocuments.site/reader034/viewer/2022051111/5563346dd8b42ad7398b57b8/html5/thumbnails/8.jpg)
Slid
e8
Water Technologies
Walnut Shell Global Usage
- Installation
- Void regions
![Page 9: Walnut Shell Filters - Oil & Gas](https://reader034.vdocuments.site/reader034/viewer/2022051111/5563346dd8b42ad7398b57b8/html5/thumbnails/9.jpg)
Slid
e9
Water Technologies
Pilot Testing – BP Valhall Platform
Objectives
Prove walnut shell media can handle North Sea produced water
Test efficiency of system
Suitable for off-shore?
Stavanger
Bergen
Oslo
BP Valhall
![Page 10: Walnut Shell Filters - Oil & Gas](https://reader034.vdocuments.site/reader034/viewer/2022051111/5563346dd8b42ad7398b57b8/html5/thumbnails/10.jpg)
Slid
e10
Water Technologies
Pilot Unit Used on BP Valhall Platform
![Page 11: Walnut Shell Filters - Oil & Gas](https://reader034.vdocuments.site/reader034/viewer/2022051111/5563346dd8b42ad7398b57b8/html5/thumbnails/11.jpg)
Slid
e11
Water Technologies
Walnut Shell Media Close-ups
![Page 12: Walnut Shell Filters - Oil & Gas](https://reader034.vdocuments.site/reader034/viewer/2022051111/5563346dd8b42ad7398b57b8/html5/thumbnails/12.jpg)
Slid
e12
Water Technologies
Backwash Procedure Used in Test
![Page 13: Walnut Shell Filters - Oil & Gas](https://reader034.vdocuments.site/reader034/viewer/2022051111/5563346dd8b42ad7398b57b8/html5/thumbnails/13.jpg)
Slid
e13
Water Technologies
Results from Pilot Testing
*
* Measurements conducted with TD500 OiW analyzer
![Page 14: Walnut Shell Filters - Oil & Gas](https://reader034.vdocuments.site/reader034/viewer/2022051111/5563346dd8b42ad7398b57b8/html5/thumbnails/14.jpg)
Slid
e14
Water Technologies
Results from Pilot Testing –
Inlet and Effluent Oil Concentrations
45
50
55
60
65
70
8/21/2008 8/22/2008 8/23/2008 8/24/2008 8/25/2008 8/26/2008
Inle
t o
il (
pp
m)
0
1
2
3
4
5
Eff
lue
nt
oil
(p
pm
)
![Page 15: Walnut Shell Filters - Oil & Gas](https://reader034.vdocuments.site/reader034/viewer/2022051111/5563346dd8b42ad7398b57b8/html5/thumbnails/15.jpg)
Slid
e15
Water Technologies
Results from Pilot Testing –
Oil Removal Efficiency
80
82
84
86
88
90
92
94
96
98
100
8/22/2008 8/23/2008 8/24/2008 8/25/2008
![Page 16: Walnut Shell Filters - Oil & Gas](https://reader034.vdocuments.site/reader034/viewer/2022051111/5563346dd8b42ad7398b57b8/html5/thumbnails/16.jpg)
Slid
e16
Water Technologies
Moving from On-Shore to Off-Shore
Demonstration Objectives
Prove walnut shell media can handle North Sea produced water
Test efficiency of system
Suitable for off-shore use?
Off-shore challenges
Footprint and weight reduction
Simplify and optimize backwash system
![Page 17: Walnut Shell Filters - Oil & Gas](https://reader034.vdocuments.site/reader034/viewer/2022051111/5563346dd8b42ad7398b57b8/html5/thumbnails/17.jpg)
Slid
e17
Water Technologies
Moving from On-Shore to Off-Shore
Tasks
Reduce external scrubbing
Increase throughput
Reduce backwash water volume
![Page 18: Walnut Shell Filters - Oil & Gas](https://reader034.vdocuments.site/reader034/viewer/2022051111/5563346dd8b42ad7398b57b8/html5/thumbnails/18.jpg)
Slid
e18
Water Technologies
Siemens Internal Backwash
![Page 19: Walnut Shell Filters - Oil & Gas](https://reader034.vdocuments.site/reader034/viewer/2022051111/5563346dd8b42ad7398b57b8/html5/thumbnails/19.jpg)
Slid
e19
Water Technologies
Improvements for Off-Shore
Complete turn over and mixing of the media
Fully fluidize the walnut shell bed
No rotating equipment or moving parts
The ability to use a finer walnut shell media to improve oil and solids removal
Smaller footprint and weight
A reduction in backwash water volume
0.72%0.35%
5%
Sand Filter Old WSF New WSF
Fo
rwa
rd F
low
Us
ed
fo
r
Ba
ck
wa
sh
(%
)
![Page 20: Walnut Shell Filters - Oil & Gas](https://reader034.vdocuments.site/reader034/viewer/2022051111/5563346dd8b42ad7398b57b8/html5/thumbnails/20.jpg)
Slid
e20
Water Technologies
The Siemens Walnut Shell Filter
Design Considerations
Ready for off-shore use
Refinement of the design through many years of successfully commissioned installations, most of which still in operation today
Direct experience of many applications for which walnut shell filters can be appropriate
No compromise of design to ensure effluent quality is maintained
![Page 21: Walnut Shell Filters - Oil & Gas](https://reader034.vdocuments.site/reader034/viewer/2022051111/5563346dd8b42ad7398b57b8/html5/thumbnails/21.jpg)
Slid
e21
Water Technologies
Summary
Walnut Shell Media
Efficiently remove oil from North Sea produced water
Solids do not impact the efficiency
Suitable for off-shore use
Walnut Shell System
Reduced footprint through efficient backwash design and finer shell media
Reduced weight
Reduced backwash water volume
![Page 22: Walnut Shell Filters - Oil & Gas](https://reader034.vdocuments.site/reader034/viewer/2022051111/5563346dd8b42ad7398b57b8/html5/thumbnails/22.jpg)
Slid
e22
Water Technologies
Thank you for your attention!