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Applied Geomorphology and Geohazard Assessment for Deepwater Development

  • Roger MooreEmail author
  • Geoff Davis
  • Oliver Dabson
Chapter
Part of the Springer Geology book series (SPRINGERGEOL)

Abstract

Development of offshore hydrocarbon resources has in recent decades advanced into frontier deepwater regions around the world posing significant technical challenges for the design and installation of oil and gas wells and facilities. Development sites are typically remote and inaccessible and little is known about the seabed geomorphology and ground conditions to be encountered. Potential geohazards are at a larger scale than found onshore and include deep canyons and terrain highs, landslides and turbidity flows, faults, salt diapirism, gas/fluid expulsion, sedimentary bedforms and adverse soil conditions. Triggering events may include seismicity, volcanism, deep ocean currents and construction activity. Early acquisition and calibration of field-wide Autonomous Underwater Vehicle (AUV) high-resolution data is essential to ensure that development plans are not exposed to avoidable geohazard risks. A key element of the approach is the application of integrated geophysical, geomorphological and geotechnical methods that make best use of high-resolution data. This paper presents an illustrated approach for applied geomorphology and geohazard assessment for deepwater development that has been adopted by leading offshore oil and gas companies. Experience from major projects around the world demonstrates considerable value in the avoidance and de-risking of geohazards through comprehensive geomorphological assessment.

Keywords

Subsea Geomorphology Geohazards Risk Development 

Notes

Acknowledgements

The authors are grateful to colleagues in BP, Statoil (formerly Norsk-Hydro), IntecSea, Royal Dutch Shell (formerly BG Group), Tullow, CH2M (formerly Halcrow Group Ltd) D'Appolonia, NGI and Fugro for their collaboration in developing the subsea geomorphological mapping and geohazard assessment approach presented herein. The authors are particularly grateful to Prof. Denys Brunsden who has been an integral part of the development of the approach and mentor of the CH2M geohazard assessment team over several decades.

References

  1. Bondevik S, Mangerud J, Dawson S, Dawson A, Lohne Ø (2003) Record-breaking height for 8000-year old tsunami in the North Atlantic. EOS Trans Am Geophys Union 84(31):289–293Google Scholar
  2. Brunsden D (2002) The fifth glossop lecture. Geomorphological roulette for engineers and planners: some insights into an old game. Q J Eng GeolHydrogeol 35:101–142CrossRefGoogle Scholar
  3. Brunsden D, Jones DKC (1972) The morphology of degraded landslide slopes in South West Dorset. Q J Eng GeolHydrogeol 5:205–222CrossRefGoogle Scholar
  4. Bryn P, Berg K, Forsberg CF, Solheim A, Kvalstad TJ (2005) Explaining the Storegga Slide. Mar Pet Geol 22:11–19CrossRefGoogle Scholar
  5. Bugge T (1983) Submarine slides on the Norwegian continental margin with special emphasis on the Storegga Slide. IKU Report 110:1–152Google Scholar
  6. Cauchon-Voyer G, Locat J, St-Onge G (2008) Late-Quaternary morpho-sedimentology and submarine mass movements of the Betsiamites area, Lower St. Lawrence Estuary, Quebec, Canada. Mar Geol 251:233–252CrossRefGoogle Scholar
  7. Cooke RU, Doornkamp JC (1990) Geomorphology in environmental management. Clarendon Press, OxfordGoogle Scholar
  8. Evans TG, Moore R, Usher N (2007) Management of geotechnical and geohazard risks in the West Nile Delta. In: 6th international conference, Offshore Site investigation and geotechnics: confronting new challenges and sharing knowledge, LondonGoogle Scholar
  9. Forsberg CF, Berg K, Brunsden D, Moore R (2002) Morphological studies of the Storegga Slide. Summary and technical report: 37-00-NH-G15-00098, Norsk Hydro. In: Gee MJR, Uy HS, Warren J, Morley CK, Lambiase JJ (eds) (2007) The Brunei slide: a giant submarine landslide on the North West Borneo Margin revealed by 3D seismic data. Mar Geol 246:9–23Google Scholar
  10. Gee MJR, Uy HS, Warren J, Morley CK, Lambiase JJ (2007) The Brunei slide: a giant submarine landslide on the North West Borneo Margin revealed by 3D seismic data. Mar Geol 246 (1):9–23Google Scholar
  11. Hampton MA, Lee HJ (1996) Submarine landslides. Rev Geophys 34(1):33–59CrossRefGoogle Scholar
  12. Hough G, Green J, Fish P, Mills A, Moore R (2011) A geomorphological mapping approach for the assessment of seabed geohazards and risk. Mar Geophys Res 32(1–2):151–162CrossRefGoogle Scholar
  13. Huhnerbach V, Masson DG (2004) Landslides in the North Atlantic and its adjacent seas: an analysis of their morphology, setting and behaviour. Mar Geol 213(2004):343–362CrossRefGoogle Scholar
  14. Jeanjean P, Liedtke E, Clukey EC, Hampson K, Evans TG (2005) An operator’s perspective on offshore risk assessment and geotechnical design in geohazard-prone areas. In: Gourvenec, Cassidy (eds) Frontiers in offshore geotechnic: ISFOG 2005Google Scholar
  15. Kvalstad TJ (2007) What is the current “Best Practice” in offshore geohazard investigations? A state-of-the -art review. In: Offshore technology conference, Houston, TexasGoogle Scholar
  16. Locat J (2001) Instabilities along ocean margins: a geomorphological and geotechnical perspective. Mar Pet Geol 18:503–512CrossRefGoogle Scholar
  17. Locat J, Lee HJ (2002) Submarine landslides: advances and challenges. Can Geotech J 39(1):193–212CrossRefGoogle Scholar
  18. Masson DG, Watts AB, Gee MJR, Urgeles R, Mitchell NC, Le Bas TP, Canals M (2002) Slope failures on the flanks of western Canary Islands. Earth Sci Rev 57:1–35CrossRefGoogle Scholar
  19. Masson DG, Harbitz CB, Wynn RB, Pedersen G, Løvholt F (2006) Submarine landslides: processes, triggers and hazard prediction. Philos Trans Roy Soc A 364:2009–2039CrossRefGoogle Scholar
  20. McAdoo BG, Pratson LF, Orange DL (2000) Submarine landslide geomorphology, US continental slope. Mar Geol 169:103–136CrossRefGoogle Scholar
  21. Micallef A, Masson DG, Berndt C, Stow DAV (2009) Development and mass movement processes of the north-eastern Storegga Slide. Quatern Sci Rev 28:433–448CrossRefGoogle Scholar
  22. Moore R, Usher N, Evans TG (2007) Integrated multidisciplinary assessment of West Nile Delta geohazards. In: 6th international conference, offshore site investigation and geotechnics: confronting new challenges and sharing knowledge, London. Society of Underwater Technology, paper SUT-OSIG-07-033Google Scholar
  23. Nittrouer CA, Kravitz JH (1996) STRATAFORM: a program to study the creation and interpretation of sedimentary strata on continental margins. Oceanography 9:146–152CrossRefGoogle Scholar
  24. Parker E et al (2009) Geohazard risk assessment—vulnerability of subsea structures to geohazards—some risk implications. Prof. Offshore Technology Conf., Houston, TX, Paper OTC20090Google Scholar
  25. Posamentier HW (2000) Seismic stratigraphy into the next millennium; a focus on 3D seismic data. In: American association of petroleum geologists annual conference, New Orleans, LA, 16–19 Apr, A118Google Scholar
  26. Prior DB, Hooper JR (1999) Sea floor engineering geomorphology: recent achievements and future directions. Geomorphology 31:411–439CrossRefGoogle Scholar
  27. Riis F, Berg K, Cartwright JA, Eidvin T, Hansch K (2005) Formation of large crater-like evacuation structures in ooze sediments in the Norwegian Sea. Possible implications for the development of the Storegga Slide. Mar Pet Geol 22:257–273CrossRefGoogle Scholar
  28. Savigear RAG (1965) A technique of morphological mapping. Ann Assoc Am Geogr 53:514–538CrossRefGoogle Scholar
  29. Solheim A, Bryn P, Sejrup HP, Mienert J, Berg K (2005) Ormen Lange—an integrated study for the safe development of a deep-water gas field within the Storegga Slide Complex, NE Atlantic continental Margin; executive summary. Mar Pet Geol 22:1–9CrossRefGoogle Scholar
  30. Ten Brink US, Geist EL, Andrews BD (2006) Size distribution of submarine landslides and its implications to tsunami hazard in Puerto Rico. Geophys Res Lett 33(L11307):1–4Google Scholar
  31. Twichell DC, Chaytor JD, Ten Brink US, Buczkowski B (2009) Morphology of late Quaternary submarine landslides along the U.S. Atlantic continental margin. Mar Geol 264(2009):4–15CrossRefGoogle Scholar
  32. M.J.R. Gee, H.S. Uy, J. Warren, C.K. Morley, J.J. Lambiase, (2007) The Brunei slide: A giant submarine landslide on the North West Borneo Margin revealed by 3D seismic data. Marine Geology 246 (1):9-23Google Scholar

Copyright information

© Springer International Publishing AG 2018

Authors and Affiliations

  1. 1.CH2MLyndon HouseEdgbastonUK
  2. 2.Professor of Applied GeomorphologyUniversity of SussexBrightonUK
  3. 3.CH2MElms HouseLondonUK

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