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Compact Separation
Technologies for
Debottlenecking Mature Field Debottlenecking Mature Field
Produced Water Treatment
Facilities
Produced Water Management 2012
Kuala Lumpur, 22-23 Mar 2012
Arnout RoosRegional Manager Asia Pacific
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ASCOM OVERVIEW
Est. 2009
Based in Netherlands
ISO 9001:2008ASCOM OVERVIEW
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ISO 9001:2008
Renogas Group:
• HQ in Arnhem, NL, with main support office in Kuala Lumpur, Malaysia
• A company by separation specialists
• Investing in R&D and new technology development for keeping a high innovation
level; own proprietary technology and IP rights
• Conceptual studies to optimize total solutions
• CFD important tool as part of overall product and service portfolio
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Renogas Group:
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ASCOM OVERVIEW
Est. 2009
Based in Netherlands
ISO 9001:2008ASCOM OVERVIEW
4
ISO 9001:2008
Renogas Group:
• HQ in Arnhem, NL, with main support office in Kuala Lumpur, Malaysia
• A company by separation specialists
• Investing in R&D and new technology development for keeping a high innovation
level; own proprietary technology and IP rights
• Conceptual studies to optimize total solutions
• CFD important tool as part of overall product and service portfolio
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TECHNOLOGIES & APPLICATIONS
ASCOM provides two distinct technologies and separation equipment:
Ve
ssel
Pip
e-b
ase
d
5
Debottlenecking facilities
water treatment Remote oilfields
Produced Subsea
processing
These technologies are key solutions for :
Ve
ssel-b
ase
d
ba
sed
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Mature Field PWT Challenges
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Case 1:
Application of ASCOM Mixedflow Hydrocyclones for Application of ASCOM Mixedflow Hydrocyclones for
Saudi Aramco – Safaniyah field
produced water treatment
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HYDROCYCLONES COMPARISON
TANGENTIAL
• Long presence on the upstream produced water market
• Tangential inflow
• Pressure energy is converted partly into undesirable turbulence
• Unstable flow
• Often incapable to meet new regulations
AXIAL
• Axial inflow
• Swirl generation through guiding vanes
• Better than tangential cyclone
• Not optimal pressure to velocity conversion
MIXEDFLOW
• Recently developed by ASCOM
• Swirl generation is based on the mixed flow principle
• Combination of radial and axial inflow
• All pressure energy is converted into a rotating motion
• Stable, undisturbed centrifugal flow
• Distinctly improved separation of oil from water
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ASCOM MIXEDFLOW HYDROCYCLONE
Flow is guided through vanes
• Lower pressure drop
• Pre-separation in swirl
Multiple inletsMultiple inlets
• Symmetric flow pattern
• Minimal reject core oscillation
Avoidance of preferential flow path
• No severe erosion
Removable swirl section
• Easy cleaning & inspection
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CFD: STREAMLINES
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SAFANIYAH FIELD
Tests were conducted in a heavy oil producing facility in winter (Nov. 2010)
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LOCATION ANALYSIS
PRODUCED WATER STORAGE VESSELSHigh res. Time →most of oil separa9on
OIW: UP TO 164 PPMSTORAGE
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TECHNOLOGY:
MixedFlow Hydrocyclones
DISPOSAL:
TARGET OIW ≤ 20 PPM
CENTRIFUGAL PUMP
Centrifugal pump
Connection to inlet of skid
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ASCOM PROPOSED DESIGN
OIW separation with min. dP
1-stage design: field trials for qualification on existing facilities upgrade
Objective:
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on existing facilities upgrade
Material of construction: Duplex
4 MixedFlow Hydrocyclone liners
Design:
MF hydrocyclone test skid before shipment to ARAMCO
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SAUDI ARAMCO TEST SKID
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Skid connected on site Skid before shipment to ARAMCO
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SITE TEST RESULTS
Feed
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RECOMMENDATIONS
Place MFH upstream of a pump if pressure allows,
For full scale up of MFH:STORAGE
Place MFH upstream of a pump if pressure allows,
Use a low shear pump, or
Add pipe length in between pump and MFH
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PUMP
MFH
MFH: Mixed Flow Hydrocyclones
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CONCLUSIONS
Lab testing
• Proves the benefits of the mixed-flow concept
Field testField test
• In the field test 12 to 16 ppm OIW levels have been reached; confirming lab test results and CFD predictions
• Showing the practical application
Summary for Mixed-Flow Hydrocyclones
• Tests were done successfully
• 20 - 30% lower pressure drop compared to conventional hydrocyclones
• Excellent turndown with respect to flow rate and reject rate
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Case 2:
Application of ASCOM Bulk De-oiler liners to reduceApplication of ASCOM Bulk De-oiler liners to reduce
a WHP energy demand
for feed / heavy oil heating
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• Existing well head platform (100.000 bpd liquid)
• Rapidly increasing water cut (60-95%)
• High viscosity oil
Situation
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• High viscosity oil
• Need significant energy for oil heating (all taken from fuel
gas)
• Available energy soon lower than required
• Existing lay out does not give much flexibility with regards
to conventional solutions
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Existing PFD
Oil Export
21Water Treatment
Well stream
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• Keep existing equipment 100% unchanged
• Install a compact bulk water removal stage upstream oil
heating units
Solution
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• Preliminary energy consumption calculations indicate that
60-90% water removal is sufficient to keep WHP energy
balance positive
• Add one low dP water polishing unit upstream of the
existing hydrocyclones
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Proposed PFD
2323
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Total liquid production
&
Required Heat
Power
Resulting energy and flow balance
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Year
Available Heat
Power
&
Flow
Oil Production
New Required
Heat
Reject Flow
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CONCLUSIONS
The demand on produced water treatment systems is increasing
• Higher water cut and load in well streams from maturing fields
• Stricter regulatory limits and compliance expectations
Meeting these requirements demands smart application of available technologies
Compact separation technologies can play an important role in meeting these requirements
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Thank you!
ASCOM Separation KL
Unit B1-1-9, Solaris Dutamas
Jalan Dutamas 1
52200, Kuala Lumpur
T +31-26-368 4450
F +31-26-368 4451
W http://www.ascomsep.com
ASCOM Separation
Simon Stevinweg 27
6827 BS Arnhem
Netherlands