This document provides an overview of resources offered by the company, including consultancy services, technology, and environmental services. The technology section lists various oil and gas production process equipment and studies. Several case studies are then described showing applications of production separators, fluid treatment units, degassers, and hydrocyclones on offshore platforms and FPSOs. Upgrades are discussed that improved performance for various clients.

1. RESOURCES
C O N S U LTA N C Y TECHNOLOGY E N V I R O N M E N TA L
PROCESS STUDIES PRODUCED WATER TREATMENT MARINE ECOTOXICOLOGY
COMPUTATIONAL FLUID DYNAMICS - CFU FRESHWATER ECOTOXICOLOGY
PHYSICAL MODELLING - Mare’s Tail WHOLE EFFLUENT ANALYSIS
SLOSHING ANALYSIS & DESIGN - Hydrocyclones BAT/BEP
FLUIDS CHARACTERISATION PROCESS UPGRADE ENVIRONMENTAL SERVICES
TEST FACILITIES PROCESS NEW BUILD
OILFIELD CHEMISTRY SERVICES PROCESS INTERNALS
BAT/BEP SAND MANAGEMENT
IMPLEMENTATION
RESEARCH & DEVELOPMENT
CASE STUDIES CASE STUDIES CASE STUDIES
NOTE: PLEASE CLICK ON THE GREY TAB BELOW ON ANY SLIDE TO RETURN TO THIS MENU

2. RESOURCES
TECHNOLOGY – CASE STUDIES
CFU - Triton
CFU – Gorm Platform
CFU – Heather Platform
CFU – Peregrino FPSO
CFU – Field Test Unit
MARE’S TAIL - Video
NEW BUILD Condensate Separator
NEW BUILD Production Separator
PROCESS UPGRADE – HP Separator
PROCESS UPGRADE – Degasser
PROCESS UPGRADE – HP Separator on FPSO

3. RESOURCES
C O N S U LTA N C Y – C A S E S T U D I E S
Process Optimisation – Review and Upgrades. PM3 BRA/BRD
Hydrocyclone Optimisation – BAT/BEP

4. RESOURCES
C O N S U LTA N C Y – C A S E S T U D I E S Talisman Energy (Malaysia) Ltd – Bunga Raya Complex
Scope of Work:
> Process Review, Offshore Fluids Characterisation,
> Hydrocyclone Trials
> Vessel Upgrades
Method
> Comprehensive review of Produced Water Treatment and
Operating Philosophy
> Conduct Offshore Fluids Characterisation and evaluation of
two hydrocyclone vendors
> Identify Bottlenecks and Prioritise Improvements
Upgrades
> Replacement hydrocyclone liners
> 1st stage separator and degasser internals
Result
> Capacity increased from 35,000 to 70,000 BWPD.

5. RESOURCES
C O N S U LTA N C Y – C A S E S T U D I E S Shell (now Talisman) Auk – Hydrocyclone Optimisation
Background:
> Not meeting discharge consent
> Hydrocyclones operating very inefficiently
> Multi-vendor trial to ascertain best option for upgrade
Findings
> Platform HC’s operating at ~50% removal
> Identified best vendor liner
> Platform HC’s PDR set at 1.2 – 1.3 due to reject bottleneck
> With raised PDR, achieved improved efficiency
Conclusion
> The existing platform hydrocyclones would be capable of
meeting the efficiency targets if operated at the correct PDR
> A reject piping cross-over was recommended to achieve PDR
> No need to upgrade the hydrocyclones
> Considerable CAPEX savings

6. RESOURCES
TECHNOLOGY – CASE STUDIES
BP Andrew Mare’s Tail®
Scope of supply
> Mechanical and process
design, fabrication, testing, inspect
ion, certification and delivery ex-
works of an 18” Mare’s Tail
> Design to pressure vessel
specification
> Complete with spare media
cartridge and revised cartridge
handling systems (for aid in removal
and insertion of media cartridges)
Process Specifications
> 18” unit
> Max design flow: 440m3/hr,
> Normal flow: 191m3/hr
> Predicted inlet process conditions;
100-1000mg/l oil at 10-20 µm

7. RESOURCES
TECHNOLOGY – CASE STUDIES
Mare’s Tail® Demonstration Video

8. RESOURCES
TECHNOLOGY – CASE STUDIES
Hess / Wood Group: Triton FPSO
> Design PW flowrate per CFU train – 430
m3/hr
> Oil inlet concentration 100 ppm with 10 –
15 ppm at the outlet
> Package comprises 2 x trains of 2 CFU’s
> with interstage Mares Tail®
> Approx package dimensions 5m x 6m x
6.5m high – dry weight 30.0 te
> Vessels, pipework and valves in Duplex
31803
> Structural steel etc carbon steel
> Instrumentation – impulse tubing all wiring
terminated at skid edge JB’s
> Package successfully commissioned

9. RESOURCES
TECHNOLOGY – CASE STUDIES
Lundin / Petrofac: Heather Platform
> PW flow rate – 331 m3/hr
> Oil inlet concentration 1500 ppm with 10 ppm
at the outlet
> Package comprises 1 x train of 2 CFU’s with
Mares Tail and Reject package added to take
reject stream
> Approximate dimensions 11m x 8m x 7m high –
dry weight 50.0 te
> Vessels, pipework and valves in lined / painted
carbon steel
> Structures - carbon steel
> Instrumentation – impulse tubing all wiring
terminated at skid edge JB’s
> Package being installed and being
commissioned

10. RESOURCES
TECHNOLOGY – CASE STUDIES
Maersk Olie og Gas, Esbjerg: Gorm Platform
> Design PW flow rate– 400 - 500 m3/hr
> Oil inlet concentration 500 ppm with < 15
ppm at the outlet
> Package comprises 1 x train of 2 CFU’s.
> Approx package dimensions 5m x 5.5m x
6m high – dry weight 20.0 te.
> Vessels, pipework and valves in Super
Duplex 32760.
> Structure carbon steel
> Instrumentation – capillary’s with all
wiring terminated at skid edge JB’s
> Package commissioning completed Nov
2008

11. RESOURCES
TECHNOLOGY – CASE STUDIES
Maersk / McDermott: Peregrino FPSO
> PW flowrate– 357 m3/hr Heavy Crude
> Oil inlet concentration 100 ppm with 29 ppm at
the outlet
> Package comprises 1 x train of 1 CFU
> Approximate dimensions 2.5m x 4.3m x 6.5m
high – dry weight 11.5 te
> Vessels, pipework & valves in Duplex 31803
> Structural steel etc carbon steel
> Commissioned
> Exceeding contractual performance with higher
inlet oil loading and transient conditions
> Client is very pleased with robust operation
and reliable operation

12. RESOURCES
TECHNOLOGY – CASE STUDIES
Compact Flotation Test Rig
> Design Basis:
> Suitable for side stream flowrates between 5.0
– 15 m3/hr
> Vessel designed to PD5500 in SS316L.
> Unit provided with all
piping, instrumentation, motive water pump
etc
> Tie-in points 1.5 – 2” NB

13. RESOURCES
TECHNOLOGY – CASE STUDIES
Rambol Denmark, South Arne Degasser
> Vessel process / mechanical design and supply of internals.
> Opus also took responsibility for the supply, installation
and commissioning including nucleonic instrumentation.
Process specifications
> PW Flowrate 100,000 bpd
> 6.8m T/T
> 2.8m ID
> Inlet 400ppm OIW
> Outlet 20ppm OIW

14. RESOURCES
TECHNOLOGY – CASE STUDIES
BP Andrew Kinnoull Separator
Scope of supply
> Process design and supply of process internals, including
VIEC (electrostatic coalescer).
> CFD modelling analysis includes: multiple flow
cases, slugging behaviour.
> Project management of design, new build vessel interfaces
and internals installation
> Overall process responsibility for the separator

15. RESOURCES
TECHNOLOGY – CASE STUDIES
BP Andrew Kinnoull Separator

16. RESOURCES
TECHNOLOGY – CASE STUDIES
Mærsk Gorm HP Separator
Original Design & Performance
> Vessel Internals Comprised of:-
> Basic deflector plates Inlet
> Perforated Plate Distribution Baffles
> Two Vane Packs
> Gas Outlet Droplet Separator
> Adjustable Weir
> Sand Jetting System
> Oil in Water Performance ~1000 mg/l for
an inlet flowrate of 600 – 700 m3/hr

17. RESOURCES
TECHNOLOGY – CASE STUDIES
Mærsk Gorm HP Separator
Review Phase
The requirement was to identify the operational
limitations of throughput through the HP Separator.
Methods Adopted:-
> Theoretical Process Review
> Physical Modelling
> Finite Element Analysis of Existing Supports
Findings:-
> The inlet device created significant turbulence
> Flow is seen to exit the inlet zone over the first
distribution baffle
> Low open area baffle design is very restrictive
> The water outlet nozzle was found to be
undersized
> Sand system, Droplet Separator & Weir height
acceptable

18. RESOURCES
TECHNOLOGY – CASE STUDIES
Mærsk Gorm HP Separator
Upgrade Modifications
> Removal of Existing Inlet, Perforated Baffles
and Vane Packs
> Internals Supplied for Upgrade:-
> Inlet Vane Device with Diffuser Baffle
> Horizontal Gate Baffle with Top Gas
Confirmed results Baffle (Inlet Zone)
Outlet Outlet Post > Horizontal Gate Baffle (Distribution
Pre-upgrade Upgrade Baffle)
~1000ppm 50 - 90ppm > Vertical Gate Baffle (Calming Baffle)
> Vortex Breaker (New Water Outlet)
> The water outlet nozzle was replaced for a
larger nozzle

19. RESOURCES
TECHNOLOGY – CASE STUDIES
Mærsk Halfdan Degasser
Original Design & Performance
> Vessel Internals Comprised of:-
> Open Pipe Inlet
> Perforated Plate
> Longitudinal Notched Weirs
Oil in Water Performance – 15-30ppm for an inlet
concentration of 50-200ppm.

20. RESOURCES
TECHNOLOGY – CASE STUDIES
Mærsk Halfdan Degasser
Review Phase
> Perforated plates fouled
> Solids
> Scale
> Behaving more like weirs
> Notched weirs not effective
> Vessel levels difficult to control
> Lack of inlet device causing poor flow
distribution

21. RESOURCES
TECHNOLOGY – CASE STUDIES
Mærsk Halfdan Degasser
Upgrade Modifications
> Remove all existing internals
> Internals supplied for upgrade:-
> ZSQ inlet device
> Slotted baffles
> Conventional notched weir

22. RESOURCES
TECHNOLOGY – CASE STUDIES
Mærsk Halfdan Degasser
Upgrade Modifications
> Remove all existing internals
> Internals supplied for upgrade:-
> ZSQ inlet device
> Slotted baffles
> Conventional notched weir

23. RESOURCES
TECHNOLOGY – CASE STUDIES
Mærsk Halfdan Degasser
The Achievements
> New internals fabricated and supplied on schedule
> Opus supervised installation
> Client confirmed performance:-
Original Internals Revamped Internals
Inlet Outlet Inlet Outlet
50-200ppm 15-30ppm 50-200ppm 5-10ppm

24. RESOURCES
TECHNOLOGY – CASE STUDIES
Hess Triton HP Separator
Original Design & Performance
> Split Flow Vessel Situated on FPSO
> Vessel Internals Comprised of:-
> Inlet Diverter Assembly
> Perforated Plate Baffles
> Perforated Plate Over Weirs
> Oil in Water Performance – 300-1500ppm
> Objective was to increase throughput by
~70% whilst maintaining performance

25. RESOURCES
TECHNOLOGY – CASE STUDIES
Hess Triton HP Separator
Review Phase
> Process review carried out
> Physical Modelling undertaken with some CFD
> Comparative analysis performed
> Improved internals arrangement determined

26. RESOURCES
TECHNOLOGY – CASE STUDIES
HP SEPARATOR ON FPSO
Upgrade Modifications
> Remove all existing internals
> Internals supplied for upgrade:-
> Vane type inlet device with distribution
baffle
> Slotted baffles
> Plate pack coalescer

27. RESOURCES
TECHNOLOGY – CASE STUDIES
Hess Triton HP Separator
The Achievements
> New internals fabricated and supplied on schedule
> Opus supervised installation
> Tie-in fluids added shortly after start-up
> Client confirmed performance:-
Original Internals Revamped Internals
(with 70% additional flowrate)
300 - 1,500ppm 100 - 600ppm