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Video: Offshore Geological, Geotechnical and Geohazard Modelling and Design for Abu Dhabi

Authors
Free Matthew (Arup) | Porovic Esad (Arup) | Manning Jason (Arup) | Fourniadis Yannis (Arup) | Lagesse Richard (Arup) | Ting Charlene (Arup) | Campbell Grace (Arup) | Koskosidi Areti (Arup) | Farrant Andrew (BGS) | Terrington Ricky (BGS) | Carter Gareth (BGS) | Omar Tarek (ADMA-OPCO)
Document ID
OTC-29047-PT
Publisher
Offshore Technology Conference
Publication Date
2018
Document Type
Presentation
Language
English
Copyright
2018. Copyright is retained by the author. This presentation is distributed by SPE with the permission of the author. Contact the author for permission to use material from this video.
Disciplines
5.1.5 Geologic Modeling, 4.1.2 Separation and Treating, 7 Management and Information, 7.2.1 Risk, Uncertainty and Risk Assessment, 7.2 Risk Management and Decision-Making, 6.3 Safety, 4.6 Natural Gas, 4 Facilities Design, Construction and Operation, 4.1 Processing Systems and Design
Keywords
Geohazard, Middle East, Geology, Geotechnics, Digital
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2 since 2007
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This paper presents a new purpose-built digital interface for obtaining location-specific geological and geotechnical ground conditions for four oil and natural gas fields offshore of Abu Dhabi in the UAE. The geological model was developed using the software package GSI3D which was applied to an offshore study area for the first time. Statistically derived geotechnical parameters were used to apply a probabilistic approach for the design basis of geotechnical elements for offshore structures. In addition, geostatistical methods were applied in the treatment of geological uncertainty in the model. The model also includes a detailed review of local and regional natural hazards, including seismic, tsunami and submarine geohazards, with the potential to affect existing and proposed offshore infrastructure.

The tool comprises a fully interactive 3D geological and geotechnical ground model for each oil and gas field based on a geodatabase containing nearly 60 years of ground investigation data. The interface is operated through ESRI ArcMap but the geodatabase can be integrated into any online or offline GIS- based platform. Application of the tool enables effective decision making on key oil and gas development issues related to the siting of new exploration and development platforms and related infrastructure. The costs associated with offshore ground investigations are significant and mobilisation of works are heavily constrained by access, health, safety and environmental requirements. This digital tool will allow these works to be optimised at the advanced stages of planning, saving on time, cost and significantly reducing health, safety and environmental risks.

Farrant, A.R., Ellison, R.A., Thomas, R.J., Pharaoh, T.C., Newell, A.J., Goodenough, K.M., Lee, J.R., Kinbell, G. & Knox, R. O'B. The geology and geophysics of the United Arab Emirates. Volume 6. Geology of the western and central United Arab Emirates. 339 pp Keyworth, Nottingham: British Geological Survey (2012)Evans, G., Ed. An historical review of the Quaternary sedimentology of the Gulf (Arabian/Persian Gulf) and its geological impact. Quaternary carbonate and evaporite sedimentary facies and their ancient analogues. A tribute to Douglas James Shearman. Special Publication Number 43 of the International Association of Sedimentologists, Wiley-Blackwell (2011)Alsharhan, A.S. and Kendall, C.S.C., Holocene coastal carbonates and evaporites of the southern Arabian Gulf and their ancient analogues. Earth-Science Reviews, 61(3), pp.191–243. (2003.)Williams, A.H. and Walkden, G.M., Late Quaternary highstand deposits of the southern Arabian Gulf: a record of sea-level and climate change. Geological Society, London, Special Publications, 195(1), pp.371–386. (2002).Kessler, H., Mathers, S. and Sobisch, H.G., The capture and dissemination of integrated 3D geospatial knowledge at the British Geological Survey using GSI3D software and methodology. Computers & geosciences, 35(6), pp. 1311–1321. (2009).Aldiss, D.T.; Black, M.G.; Entwisle, D.C.; Page, D.P.; Terrington, R.L. Benefits of a 3D geological model for major tunnelling works: an example from Farringdon, east-central London, UK. Quarterly Journal of Engineering Geology and Hydrogeology, 45 (4). 405–414. 10.1144/qjegh2011-066 (2012).Mathers, S.J.; Terrington, R.L.; Waters, C.N.; Leslie, A.G. GB3D : a framework for the bedrock geology of Great Britain. Geoscience Data Journal, 1 (1). 30–42. 10.1002/gdj3.9 (2014).De Beer, J; Price, S J.; Ford, R. 3D modelling of geological and anthropogenic deposits at the World Heritage Site of Bryggen in Bergen, Norway. Quaternary International, 251. 107–116. 10.1016/j.quaint.2011.06.015 (2012).Price, S J, Farrant, A R, Leslie, A, Terrington, R L, Merritt, J, Entwisle, D, Thorpe, S, Horabin, C, Gow, H, Self, S & McCormick, T. A 3D superficial and bedrock geological model of the Abu Dhabi urban area, United Arab Emirates. British Geological Survey Commercial Report, CR/11/138. 74pp. (2012).DNV. DNV-RP-207 Statistical Representation of Soil Data (2012)International Organization for Standardization (ISO). Petroleum and Natural Gas Industries-Offshore Production Installations-Guidelines on Tools and Techniques for Hazard Identification and Risk Assessment (Report No. 17776). Geneva: International Organization for Standardization. (2002).

You may also be interested in…

OTC

Offshore Geological, Geotechnical and Geohazard Modelling and Design for Abu Dhabi

Matthew, Free, Arup
Esad, Porovic, Arup
Jason, Manning, Arup
Yannis, Fourniadis, Arup
Richard, Lagesse, Arup
Charlene, Ting, Arup
Grace, Campbell, Arup
Areti, Koskosidi, Arup
Andrew, Farrant, BGS
Ricky, Terrington, BGS
Gareth, Carter, BGS
Tarek, Omar, ADMA-OPCO
29047-MS OTC Conference Paper - 2018
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