010 deepwarer gulf of mexico - ii · pdf filegulf of mexico 500 1000 1500 2000 2500 ... new...
TRANSCRIPT
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Deepwater Gulf of MexicoTechnology Challenges
Richard S. MercierDirector, OTRC
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OTRC Core Mission
To provide technology, expertise, and services needed for thedevelopment of drilling, production, and transportation systems
that enable the safe and economically viable exploitation ofhydrocarbon resources in deep and ultra-deep water
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OTRC Technology Focus
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Development of theDevelopment of theDeepwater Gulf of MexicoDeepwater Gulf of Mexico
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March Into TheDeepwater
Gulf Of Mexico
500
1000
1500
2000
2500
1988 1993 1998 2003 2008
Wat
er D
epth
(m
)
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Hub and Spoke Field DevelopmentModel
Na Kika Semisubmersible(2,000 m WD, installed 2003)
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Recently Installed Hubs
Atlantis(2,150 m WD)
IndependenceHub (2,400 m WD)
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Hubs Under Installation
Tahiti Spar(2,130 m WD)
Blind FaithSemisubmersible
(2,400 m WD)
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Hubs Under Design or Construction
ThunderHawk Semisubmersible (1,745 m WD)
Shenzi TLP (1,467 m WD)
Mirage MinDoc(1,200 m WD)
Perdido Spar(2,400 m WD)
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Cascade/Chinook FPSO600,000 bbls storage capacity
Disconnectable turret buoy
Free standing hybrid risers
Shuttle tanker for oil
Gas export pipeline
Polyester mooring
Torpedo pile VLAs
Mitigation of hurricane risk
Short field life solution
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Dry TreeSemisubmersible
for Ultra-deep Water
AdvantagesDirect vertical access to wellsQuayside facilities integrationAvoid long duration offshore installation
ChallengeRiser tensioners to handle ~10 m stroke
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New and Updated API GuidelinesInterim Guidance Bulletins2INT-MET Hurricane Conditions in the GoM2INT-EX Assessment of Existing Structures for Hurricane Conditions2INT-DG Design of Offshore Structures for Hurricane Conditions
Updated Recommended Practice (to be issued in next few months)RP 2T Planning, Designing and Constructing TLPsRP 2SK Design and Analysis of Stationkeeping Systems
Updated Recommended Practice (committees being formed)RP 2SM Design, Manufacture, Installation, and Maintenance of
Synthetic Fiber Ropes for Offshore MooringRP 2FPS Planning, Designing and Constructing Floating Production
Systems
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Effect of non-collinear wave and current on• linear wave radiation & diffraction• low frequency drift, especially yaw motions• effectiveness of bilge keels
Offloading operability• interactions of multiple bodies in close proximity• tank sloshing
Hydrodynamics of Turret-Moored FPSOs
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Riser VIV in Sheared and Uniform Currents
Mechanics & modeling of multi-mode inline & cross-flow VIV
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Power supply during hurricaneevacuation
Instrument reliability (currentmeters, strain gages)
Structural health monitoring(large number of channels)
Remote monitoring (highbandwidth data transfer)
Data assimilation, QA/QC,analysis
Database management
Performance Monitoring ofOffshore Systems
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Torpedo Piles & Anchors
CFD/FE modeling & scale model testing of• penetration/installation• set-up• pull-out
Calibration of simple models for predictingpenetration and pull-out capacity
Model verification with lab and field data
0
2.5
5
7.5
10
Penetration Depth (m)
Velo
city
(m/s
)
0 0.1 0.2 0.3 0.4
MeasuredPredicted using CFD
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Deep Sea Furrows (Sigsbee Escarpment)
Physical characteristics, mechanisms of formation& associated environmental processes
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Well Systems Technology
High pressure, high temperature (HPHT) equipment
High integrity pressure protection systems (HIPPS)
Long distance multiphase transport - flow assurance
Fatigue performance of high strength riser materials
Composite risers for ultra-deep water high pressure wells
Performance monitoring of subsea systems
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Miscellaneous Technology Challenges
Measurement and modeling of ocean currents(hurricane & Loop current eddies)
Gas handling options for ultra-deep water (CNG,LNG, GTL, GTW)
Ultra-deepwater TLP concepts
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In Closing …
Looking back over the past 20 years, the pace of deepwatertechnology development has been truly remarkable.
Although deepwater operators are generally risk averse,extraction of hydrocarbons from ever deeper waters requiresdeployment of new enabling technologies.
The challenges faced today in developing the ultra-deepwater (> 1800 m) are different but no less severe than thosefaced 20 years ago when stepping out into deepwater (> 500m).
As always, prudent risk takers will be well rewarded.