Innovative Assessments for Selecting Offshore-Platform-Decommissioning Alternatives
- Stephen P. Truchon (Shell Projects and Technology) | Louis P. Brzuzy (Shell Exploration and Production) | Deborah Fawcett (CSA Ocean Sciences) | Mark Fonseca (CSA Ocean Sciences)
- Document ID
- Society of Petroleum Engineers
- Oil and Gas Facilities
- Publication Date
- October 2015
- Document Type
- Journal Paper
- 47 - 55
- 2015.Society of Petroleum Engineers
- decommissioning, fish, ecosystem services , marine ecology , coral
- 2 in the last 30 days
- 213 since 2007
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Hard substrates associated with offshore oil and gas platforms can contribute to the productivity of marine ecosystems, thereby generating local and regional economic benefits. These benefits form the basis for incorporating the platform into a rigs-to-reefs program when it is retired or for selecting some other type of removal option. There are many options for reefing platforms, each differing in environmental impact associated with dismantling and transport of the platform structure (deck, jacket, and other subsea structures). The use of science-based decision making in exploring platform-removal options can be beneficial for all stakeholders in the context of regulatory environment, complex ecosystem, and human interactions across multiple scales. Accommodating these complexities in a decisionmaking process is the foundation of an ecosystem-based-management (EBM) approach. EBM is an environmental-management approach that recognizes the full array of interactions within an ecosystem, including humans, rather than considering single issues, species, or ecosystem services in isolation (Christensen et al. 1996; McLeod et al. 2005; Altman et al. 2011).
The focus of this study is on one of Shell's former deepwater assets in the Gulf of Mexico. The fixed-jacket platform has been in operation for more than 35 years and extends to more than 1,000 ft of water depth off the coast of Louisiana. Few studies have been published on the ecology of marine life inhabiting deepwater platforms such as these. To begin to understand the specific contribution of this platform as an artificial reef, a stratified (across depth down the platform) study was performed by use of routinely collected remotely-operated-vessel (ROV) video footage to assess fish and sessile biotic communities. The ROV study revealed clear depth-related patterns of visually conspicuous epibiota (surface-dwelling organisms such as Lophelia pertusa) and numerous species of reef and pelagic fishes. These data were used to construct a matrix to rank the ecosystem services of several decommissioning alternatives, including complete removal of the deck and jacket; removal of the deck, topping the jacket 85 ft below the waterline, and leaving the remainder in place; and removal of the deck and transfer of the entire jacket to a rigs-to-reef location. This portion of the assessment provided a strategic framework for identifying and evaluating sensitive ecosystem services in association with both human and environmental drivers to provide realistic (actionable) guidance in the selection of these decommissioning options. The preliminary ranking illustrated that a high level of ecosystem services could be maintained by decommissioning alternatives that leave the jacket in place or transfer the jacket elsewhere as part of a rigs-to-reefs program.
|File Size||8 MB||Number of Pages||9|
Altman, I., Blakeslee, A. M. H., Osio, G. C. et al. 2011. A Practical Approach to Implementation of Ecosystem-based Management: A Case Study Using the Gulf of Maine Marine Ecosystem. Frontiers in Ecology and the Environment 9: 183–189. http://dx.doi.org/10.1890/080186.
Atchison, A. D., Sammarco, P. W., and Brazeau, D. A. 2008. Genetic Connectivity in Corals on the Flower Garden Banks and Surrounding Oil/Gas Platforms, Gulf of Mexico. Journal of Experimental Marine Biology and Ecology 365 (1): 1–12. http://dx.doi.org/10.1016/j.jembe.2008.07.002.
Bureau of Ocean Energy Management (BOEM). 2012. Outer Continental Shelf Oil and Gas Leasing Program: 2012–2017. Final Programmatic Environmental Impact Statement. July 2012. Appendix C, Federal Laws and Executive Orders. OCS EIS/EA BOEM 2012-030. 4 vols.
Christensen, N. L., Bartuska, A. M., Brown, J. H. et al. 1996. The Report for the Ecological Society of America Committee on the Scientific Basis for Ecosystem Management. Ecological Applications 6: 665–691. http://dx.doi.org/10.2307/2269460.
Church, R., Warren, D., Cullimore, R. et al. 2007. Archaeological and Biological Analysis of World War II Shipwrecks in the Gulf of Mexico: Artificial Reef Effect in Deep Water. OCS Study MMS 2007-015, US Department of the Interior, Minerals Management Service, Gulf of Mexico OCS Region, New Orleans.
Cripps, S. J. and Aabel, J. P. 2002. Environmental and socio-economic impact assessment of Ekoreef, a multiple platform rigs-to-reefs development. ICES Journal of Marine Science 59: S300–S308. http://dx.doi.org/10.1006/jmsc.2002.1293.
Dennis, G. D. and Bright, T. J. 1988. Reef Fish Assemblages on Hard Banks in the Northwestern Gulf of Mexico. Bulletin of Marine Science 43 (2): 280–307.
Dokken, Q. R., Withers, K., Childs, S. et al. 2000. Characterization and comparison of platform reef communities off the Texas coast. Technical Report TAMU-CC-0007-CCS, Center for Coastal Studies, Texas A&M University–Corpus Christi.
Dugas, R., Guillory, V., and Fischer, M. 1979. Oil rigs and offshore sport fishing in Louisiana. Fisheries 4 (6): 2–10.
Ekins, P., Vanner, R., and Firebrace, J. 2006. Decommissioning of offshore oil and gas facilities: A comparative assessment of different scenarios. J Environ Manage 79 (4): 420–438.
Forristall, G. Z. 1996. Measurements of Current Blockage by the Bullwinkle Platform. J. Atmos. Oceanic Technol. 13: 1247–1266. http://dx.doi.org/10.1175/1520-0426(1996)013<1247:MOCBBT>2.0.CO;2.
Gallaway, B. J. and Lewbel, G. S. 1982. The ecology of petroleum platforms in the northwestern Gulf of Mexico: a community profile. FWS/OBS-82/27, Bureau of Land Management, Gulf of Mexico OCS Regional Office, Open-File Report 82-03, U.S. Fish and Wildlife Service, Office of Biological Services, Washington, D.C. http://pubs.er.usgs.gov/publication/fwsobs82_27.
Gitschlag, G. R. 1990. Sea turtle monitoring at offshore oil and gas platforms. In Proceedings of the 10th Annual Workshop on Sea Turtle Biology and Conservation, eds. T. H. Richardson, J. I. Richardson, and M. Donnelly, NOAA Technical Memorandum NMFS-SEFC-278, 223–246.
Gitschlag, G. R. and Renaud, M. 1989. Sea turtles and the explosive removal of offshore oil and gas structures. In Proceedings of the 9th Annual Workshop on Sea Turtle Conservation and Biology, eds. S. A. Eckert , K. L. Eckert, and T. H. Richardson, NOAA Technical Memorandum NMFS-SEFC-232, 67–68.
Hamner, W. M., Jones, M. S., and Carleton, J. H. 1988. Zooplankton, Planktivorous Fish, and Water Currents on a Windward Reef Face: Great Barrier Reef, Australia. Bulletin of Marine Science 42 (3): 459–479.
Hastings, R. W., Ogren, L. H., and Mabry, M. T. 1976. Observations of the fish fauna associated with offshore platforms in the northeastern Gulf of Mexico. Fish. Bull. 74 (2): 387–402. http://fishbull.noaa.gov/74-2/hastings.pdf.
Keenan, S. F., Benfield, M. C., and Shaw, R. F. 2003. Zooplanktivory by blue runner Caranx crysos: a potential energetic subsidy to Gulf of Mexico fish populations at petroleum platforms. American Fisheries Society Symposium 36: 167–180.
Latynov, Y. Y. 1992. Pioneer settlements of reef-building corals on pile piers of oil-drilling platforms in the South China Sea. Russian Journal of Marine Biology 17 (3): 93–99.
Lewbel, G. S., Howard, R. L., and Gallaway, B. J. 1987. Zonation of dominant fouling organisms on northern Gulf of Mexico petroleum platforms. Marine Environmental Research 21 (3): 199–224. http://dx.doi.org/10.1016/0141-1136(87)90066-3.
Lindquist, D. G. and Pietrafesa, L. J. 1989. Current Vortices and Fish Aggregations: The Current Field and Associated Fishes Around a Tugboat Wreck in Onslow Bay, North Carolina. Bulletin of Marine Science 44 (2): 533–544.
Manago, F. and Williamson B. (eds.). 1998. Proceedings: Public Workshop, Decommissioning and Removal of Oil and Gas Facilities Offshore California: Recent Experiences and Future Deepwater Challenges, September 1997. Coastal Research Center, Marine Science Institute, University of California, Santa Barbara, California. MMS OCS Study 98-0023. MMS Cooperative Agreement Number 14-35-0001-30761. 269 pp.
McLeod, K. L., Lubchenco, J., Palumbi, S. R. et al. 2005. Scientific Consensus Statement on Marine Ecosystem-Based Management. Signed by 221 academic scientists and policy experts with relevant expertise and published by the Communication Partnership for Science and the Sea at http://compassonline.org/?q=EBM.
Rauch, T. 2003. Equilibrial blenniid assemblages on offshore petroleum platforms. Environmental Biology of Fishes 68 (3): 301–305. http://aquila.usm.edu/fac_pubs/3146.
Reggio, V. I. Jr. 1989. Overview of rigs to reefs. III: Petroleum structures as artificial reefs: a compendium. Fourth Int. Conf. Artificial Habitats for Fisheries. Reggio V. I. Jr. (ed). Rigs-to-Reefs Special Session, 4 November, 1987, Miami, FL. OCS/MMS 89-0021, p. 1.
Renaud, M. L. and Carpenter, J. A. 1994. Movements and Submergence Patterns of Loggerhead Turtles (Caretta caretta) in the Gulf of Mexico Determined Through Satellite Telemetry. Bulletin of Marine Science 55 (1): 1–15. http://www.sefsc.noaa.gov/turtles/PR_Renaud_Carpenter_1994_BullMarSci.pdf.
Rosman, I., Boland, G. S., Martin, L. et al. 1987. Underwater Sightings of Sea Turtles in the Northern Gulf of Mexico. OCS Study MMS 87-0107, US Department of the Interior, Minerals Management Service, Gulf of Mexico OCS Regional Office, New Orleans.
Snyder, D. B. 2001. Fish Communities. In Mississippi/Alabama Pinnacle Trend Ecosystem Monitoring, Final Synthesis Report,
Continental Shelf Associates, Inc. and Texas A&M University, Geochemical and Environmental Research Group, Chap. 8, 269–
94, US Department of the Interior, Geological Survey, Biological Resources Division, USGS BSR 2001-0007 and Minerals Management Service, Gulf of Mexico OCS Region, New Orleans, OCS Study MMS 2001-080.
Weaver, D. C., Dennis, G. D., and Sulak, K. J. 2001. Northeastern Gulf of Mexico Coastal and Marine Ecosystem Program: Community Structure and Trophic Ecology of Demersal Fishes on the Pinnacles Reef Tract, Final Synthesis Report. US Department of the Interior, Geological Survey, USGS BSR-2001-0008 and Minerals Management Service Gulf of Mexico OCS Region, New Orleans, OCS Study MMS 2002-034. http://pubs.er.usgs.gov/publication/bsr010008.
Weaver, D. C., Hickerson, E. L., and Schmahl, G. P. 2006. Deep reef fish surveys by submersible on Alderdice, McGrail, and Sonnier Banks in the Northwestern Gulf of Mexico. In Emerging technologies for reef fisheries research and management, ed. J. C. Taylor, 69–87, NOAA Professional Paper NMFS 5. Seattle, Washington, USA: National Oceanic and Atmospheric Administration (NOAA). http://spo.nwr.noaa.gov/pp5.pdf.