building australia’s capability- wa research in subsea … · · 2017-12-22analysis of the best...
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Curtin University is a trademark of Curtin University of TechnologyCRICOS Provider Code 00301J
Professor Brian Evans, Director O&G research initiatives, Curtin University
Building Australia’s Capability-
WA Research in Subsea Engineering
Curtin University is a trademark of Curtin University of TechnologyCRICOS Provider Code 00301J
Biomarkers& isotopes Modern &
ancient
Past and present
environments & life
Biogeo-chemistry
Oil, gas and
minerals
Temp
Mass Extinctions
Climate
Toxic sediments
Nutrients
Pollution
Food webs
Weathering
Provenance
Spills
DegradationContact: Prof Kliti [email protected]
Redox
Modern / ancient
analogues
Geo-microbiology
Bridges:ChemistryGeologyEarth SystemsEnvironmental Science
World class exceptionally well-equipped analytical facility
WA ORGANIC & ISOTOPE GEOCHEMISTRY CENTRE
Curtin University is a trademark of Curtin University of TechnologyCRICOS Provider Code 00301J
• Source rock characterisation
• Fluid characterisation
• Jurassic vs Triassic
• Upper-Jurassic vs Middle-Jurassic
• Oil–oil and oil–source rock correlations
• Applications of novel techniques and
ancillary analyses: comprehensive gas
chromatography coupled to time-of-flight
mass spectrometry (GCxGC-TOFMS),
compound specific isotope analysis (CSIA),
analysis of diamondoids.
Establish discrimination among fluids and new insights
into the petroleum systems in the Dampier sub-Basin
Northern Carnarvon Basin
WA ORGANIC & ISOTOPE GEOCHEMISTRY CENTRE
Curtin University is a trademark of Curtin University of TechnologyCRICOS Provider Code 00301J
Modelling of underwater noise emission from offshore pile driving
(Chevron)
Press Enter to play movie
ground
pil
e
ram
• Develop comprehensive physical/numerical model of sound emission and
propagation from offshore pile driving to accurately predict underwater noise
levels and assess potential impacts of piling noise on marine fauna.
• Models available until recent times are not capable of sufficiently accurate
predictions.
Sound pressure in water and particle displacement in ground after
hammer impact over three different seabed types
water
Centre for Marine Science & Technology
Curtin University is a trademark of Curtin University of TechnologyCRICOS Provider Code 00301J
Passive acoustic monitoring (PAM) of humpback whales on NW Shelf
ChevronAcoustically detect and localize humpback
whales to prevent potential harm, including ship
collision, in offshore operational areas on NW
shelf.
2
13
Humpback cow with calf and escort
Spectrograms with bearing data from 4 sensors
-2 0 2 4 66
-4
-2
0
2
4
6
Easting (km)
2
1
3
-6 -4 0 2 4 6-6
4
2
0
2
4
6array of 4 acoustic sensorsdetected and localized whales95% localization confidence
Nor
thin
g (k
m)
Three whales detected
Centre for Marine Science & Technology
Curtin University is a trademark of Curtin University of TechnologyCRICOS Provider Code 00301J
Ship hydrodynamics (Chevron)
• Ship under-keel clearance for ports- developing guidelines for LNG Terminal, Barrow Is
• Wave-induced motions and mooring analysis for side-by-side vessels in waves.
Measuring vertical
motions of a tanker
u.au
Centre for Marine Science & Technology
Curtin University is a trademark of Curtin University of TechnologyCRICOS Provider Code 00301J
Sound Scape in the Fremantle Inner Harbour (Fremantle Port Auth.)
2
13
Three whales detected
Daily machinery, train (nearby bridge)
& vessel traffic noiseVibratory & Impact pile
driving noise
Dolphin whistles
Centre for Marine Science & Technology
Curtin University is a trademark of Curtin University of TechnologyCRICOS Provider Code 00301J
Dolphin transits when pile driving
Dolphins transited the area within
the vicinity of pile driving less
frequently when piling than when
no pile driving occurred (based on
modelling using Generalized
Estimating Equations)
Centre for Marine Science & Technology
Curtin University is a trademark of Curtin University of TechnologyCRICOS Provider Code 00301J
Gas Hydrate Research
PVT Sapphire cell used for hydrate formation/dissociation testing,
operated to -100Deg C under 500 bar pressure:
� Effect of MEG degradation on hydrate formation inhibition performance along gas systems:
1. Analysis of the best MEG inhibitor performance from different MEG suppliers.
2. Study of the various temperature degradation effects for different durations.
3. Hydrate formation temperatures using different MEG concentrations.
� Effect of thermal exposure on MEG with Film Forming Corrosion Inhibitor (FFCI) and MDEA and its
Influence on inhibition of hydrate formation.
� Effects of inert gases on hydrate formation/dissociation of natural gas
� Thermodynamic modelling that establishes the prediction correlations of hydrate formation in
presence of thermal degraded MEG Contact [email protected]
Clean Gas Technology Centre
Curtin University is a trademark of Curtin University of TechnologyCRICOS Provider Code 00301J
PVT Unit (Sapphire cell)
Clean Gas Technology Centre
Curtin University is a trademark of Curtin University of TechnologyCRICOS Provider Code 00301J
• Reduction in corrosion resistance of weld metal and mechanical properties
during welding. Accepted sigma phase content: < 1 %
• Need for portable test device to determine the corrosion resistance of these
welds (an alternative to G-48 test).
� Chemical Etching- Sigma phase identified with orange-yellow colour.
� Redox couple/Chemical potentiostat
� Polarization test Contact [email protected]
Weld qualification and field testing
Curtin Corrosion Centre
50
µm
0% sigma
phase
3.1% sigma
phase5.1% sigma phase
Pitting confirmed by appearance of Prussian blue colour
Curtin University is a trademark of Curtin University of TechnologyCRICOS Provider Code 00301J
Test feasibility of internally protecting subsea flowlines from sea-water corrosion
316L SS
100 mm
6 m PVC
Natural Sea-water
TSA coating
• Corrosion potential remained well below Epit value for 316L
• No pitting observed even after 2 months immersion period.
Contact [email protected]
Sea water ingress in 316 cladded pipelines
Curtin Corrosion Centre
Curtin University is a trademark of Curtin University of TechnologyCRICOS Provider Code 00301J
Corrosion under insulation (CUI- Santos)• Modification to the ASTM G189-07
• Electrochemical measurement to monitor the insulation dry-out period.
• Investigation of wet/dry cycles
• 3D surface analysis for localized corrosion
• Correlate corrosion rate with different climatic and operating conditions.
• Improve level of confidence in using carbon steel in benign conditions.
Curtin Corrosion Centre
Curtin University is a trademark of Curtin University of TechnologyCRICOS Provider Code 00301J
Microbiologically Influenced Corrosion (MIC)Woodside Chevron
CAPABILITIES:
� Microbial Diversity Profiling
� Electrochemical methods to study MIC
� Evaluation of microbial adhesion and biofilm formation: SEM,
AFM, Fluorescence Microscopy.
� Identification and quantification of MIC microorganisms.
� Gene expression studies
� Metabolic activity levels
� Biocide Qualification
� Microbial adhesion and biofilm formation
� Materials susceptibility to MIC
Curtin Corrosion Centre
Curtin University is a trademark of Curtin University of TechnologyCRICOS Provider Code 00301J
Microbial research & testing for oil and gas industry
DGGE profiles of bacterial populations in biofilms grown on different CRA materials.
Scanning electron microscope image showing biofilms grown on CRAs.
Laboratory cultures of sulphate-reducing bacteria (SRB)
Laboratory cultures of Acid-producing bacteria (APB)
Curtin Corrosion Centre
Curtin University is a trademark of Curtin University of TechnologyCRICOS Provider Code 00301J
Corrosion Inhibitor – JIPcontact [email protected]
� Corrosion under-deposits and its inhibition.
� Inhibition of localized corrosion at magnetite-deposited steels.
� Limits for corrosion inhibition at elevated temperature/pressure and flow rate.
� Synergistic effects of chemical compounds used in commercial inhibitor formulations.
� Corrosion inhibition in oil/wet systems affected by the presence of hydrocarbons.
� Corrosion and condensation rates in the presence of monoethylene glycol.
� Performance of corrosion inhibitors at welds.
� Corrosion inhibition of 13Cr stainless steels treated under extreme conditions.
Curtin Corrosion Centre
Bare carbon steel Corrosion inhibitor (organic surfactant) in CO2-saturated
brine showing cylindrical aggregates formed at the
surface
Curtin University is a trademark of Curtin University of TechnologyCRICOS Provider Code 00301J
Embedded sensors in drill rods and subsea plates
� Future long term equipment conditional monitoring using embedded sensors Contact [email protected]
� Signal Processing of Subsea Communications
� Underwater Communications with ROVs
� Future sensors for MWD using carbon fibre rods
Curtin Petroleum Engineering
Curtin University is a trademark of Curtin University of TechnologyCRICOS Provider Code 00301J
Flowline sand detection (Chevron)
� Sand production causes erosion, inefficient separation, flow-line plugging
� Studies of non-intrusive acoustic sensors versus intrusive erosion sensors
� Characterising sand types and combining both to give high confidence alarm systems in the future
Curtin Petroleum Engineering
Curtin University is a trademark of Curtin University of TechnologyCRICOS Provider Code 00301J
Built Information Modelling (Woodside)
System Integration Modelling
Curtin University is a trademark of Curtin University of TechnologyCRICOS Provider Code 00301J
BIM Technology (Woodside)
As-planned Model
As-built Model
Deviation Analysis
Tolerably mobile foundations
• Designed to move tolerably across the seabed to absorb some of the load imposed
by thermal expansion of the pipeline.
• Enables smaller foundation footprints, quicker, cheaper installation by smaller
vessels.
Contact: Susan Gourvenec,
N = 1N = 2N = 3
ForwardBackward
Reconsolidation
Centre for Offshore Foundation Systems
As flowline expands at PLET, flat base allowsPLET to slide- slides back during shut-down
O-tube Program
• The O-tube allows ocean-pipe-seabed interaction to be simulated at large scale
• Seabed mobility can be observed, quantified and now included in design
• This has benefits for pipeline stability, which are leading to reduced project costs
Contact: Prof. Liang Cheng, Professor of Hydraulics [email protected]
Prof. David White, Shell EMI Professor of Offshore Engineering [email protected]
Centre for Offshore Foundation Systems
O-tube Cyclone Simulation
• Example test from STABLEpipe JIP, exploring stability limits (Woodside/Chevron funded)
Draper, S., An, H., Cheng, L., White D.J., Griffiths, T.G. 2014. Stability of subsea pipelines during large storms. Philosophical Trans. of the Royal Society, DOI:10.1098/rsta.2014.0106
Centre for Offshore Foundation Systems
Field data to verify new methods
Historic survey data mining to model self-burial (Woodside)
Leckie, S., Draper, S., White, D.J., Cheng, L. & Fogliani N. 2015. Lifelong embedment and spanning of a pipeline on a mobile seabed. Coastal Engineering. 95:130-146
Centre for Offshore Foundation Systems
Curtin University is a trademark of Curtin University of TechnologyCRICOS Provider Code 00301J
Building Australia’s Capability-
WA Research in Subsea Engineering
Thanks to the academic staff of:WA Organic & Isotope Research CentreCentre for Marine Science and TechnologyCorrosion CentreDept of Petroleum EngineeringBuilt Information Modelling CentreCentre for Offshore Foundation Systems