Modeling lost production from destroyed platforms in the 2004–2005 Gulf of Mexico hurricane seasons

“…Nevertheless, the current engineering knowledge required to accurately predict the magnitude and distribution of wave-in-deck loads and the resulting global response of a floating structure remains limited (Scharnke and Hennig, 2015, Lee et al, 2014, Hirdaris et al, 2014, Rudman and Cleary, 2013 (Kaiser et al, 2009). The reported damage suggests that during tropical storms or hurricanes the wave height exceeds the design height for many existing offshore structures.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation of wave-in-deck impact events on a TLP model

et al. 2017

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Model tests were conducted to investigate the global response of a conventional tension leg platform (TLP) due to wave-in-deck loads associated with extreme wave events in irregular long-crested waves of a cyclonic sea state. The experimental setup was designed to allow for the simultaneous measurement of wave surface elevations, rigid body motions, tendon tensions, as well as the pressure distribution at the model's deck underside. The obtained results demonstrated the variability of all the measurements and provided insights into the effect of wave-in-deck loads on the platform behaviour, tendon tensions and slamming pressures and showed qualitative correlations between these parameters. Based on the repeated tests in several events with different wave parameters, general observations and conclusions were made with respect to the platform dynamics during the deck impact, tendon tensions, slack tendon situations, tendon ringing and local impact pressures. The results of this study could be used for calibrating computational fluid dynamics (CFD) tools.

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“…To correctly interpret deposits, we also need to link them to a process. Typically, we rely on scaled-down laboratory experiments or theoretical models, but there are many uncertainties in such models due to lack of field- (Kaiser, Yu and Jablonowski 2009;Skogdalen and Vinnem 2012). Therefore, avoidance of hazardous areas is preferred but is not always an option.…”

Section: How Are Marine Geohazards Typically Assessed?mentioning

confidence: 99%

“…). Damage to seafloor oil and gas infrastructure can lead to delayed production, or even uncontrolled loss of hydrocarbons to the marine environment, which is difficult to remedy in deep water (Kaiser, Yu and Jablonowski ; Skogdalen and Vinnem ). Therefore, avoidance of hazardous areas is preferred but is not always an option.…”

Section: Introductionmentioning

confidence: 99%

Direct monitoring of active geohazards: emerging geophysical tools for deep‐water assessments

Clare

Vardy

Cartigny

et al. 2017

Near Surface Geophysics

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Seafloor networks of cables, pipelines, and other infrastructure underpin our daily lives, providing communication links, information, and energy supplies. Despite their global importance, these networks are vulnerable to damage by a number of natural seafloor hazards, including landslides, turbidity currents, fluid flow, and scour. Conventional geophysical techniques, such as high‐resolution reflection seismic and side‐scan sonar, are commonly employed in geohazard assessments. These conventional tools provide essential information for route planning and design; however, such surveys provide only indirect evidence of past processes and do not observe or measure the geohazard itself. As such, many numerical‐based impact models lack field‐scale calibration, and much uncertainty exists about the triggers, nature, and frequency of deep‐water geohazards. Recent advances in technology now enable a step change in their understanding through direct monitoring. We outline some emerging monitoring tools and how they can quantify key parameters for deep‐water geohazard assessment. Repeat seafloor surveys in dynamic areas show that solely relying on evidence from past deposits can lead to an under‐representation of the geohazard events. Acoustic Doppler current profiling provides new insights into the structure of turbidity currents, whereas instrumented mobile sensors record the nature of movement at the base of those flows for the first time. Existing and bespoke cabled networks enable high bandwidth, low power, and distributed measurements of parameters such as strain across large areas of seafloor. These techniques provide valuable new measurements that will improve geohazard assessments and should be deployed in a complementary manner alongside conventional geophysical tools.

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Modeling lost production from destroyed platforms in the 2004–2005 Gulf of Mexico hurricane seasons

Cited by 36 publications

References 13 publications

Oil price volatility and oil-related events: An Internet concern study perspective

Oil price volatility and oil-related events: An Internet concern study perspective

Experimental investigation of wave-in-deck impact events on a TLP model

Direct monitoring of active geohazards: emerging geophysical tools for deep‐water assessments

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