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Keywords: sediment
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Proceedings Papers

Paper presented at the Offshore Site Investigation and Geotechnics: Integrated Technologies - Present and Future, September 12–14, 2012
Paper Number: SUT-OSIG-12-07
...1. Introduction In soil mechanics, it is customary to consider that marine soils are completely saturated. However, several studies have identified that numerous types of gas exist in marine sediments, with methane gas being the most common (Claypool and Kaplan, 1974; Schubel, 1974; Christian...
Proceedings Papers

Paper presented at the Offshore Site Investigation and Geotechnics: Integrated Technologies - Present and Future, September 12–14, 2012
Paper Number: SUT-OSIG-12-08
... – the most common reef-building coral - forms colonies up to several metres wide and is capable of forming extensive reefs composed of live and dead coral skeleton. mapping sediment iceberg plough mark cold-water coral reef coral lophelia rubble substrate mixed sediment freiwald sonar data...
Proceedings Papers

Paper presented at the Offshore Site Investigation and Geotechnics: Integrated Technologies - Present and Future, September 12–14, 2012
Paper Number: SUT-OSIG-12-10
... reservoir characterization dataset north sea tranche sediment quaternary geology 1 geo challenge upstream oil & gas seismic anomaly dogger bank multibeam bathymetry investigation forewind 1. Introduction In June 2008, the Crown Estate announced the opening of nine development zones within...
Proceedings Papers

Paper presented at the Offshore Site Investigation and Geotechnics: Integrated Technologies - Present and Future, September 12–14, 2012
Paper Number: SUT-OSIG-12-20
.... Introduction There is frequently a requirement to bury pipelines and cables into seabed sediments to protect them from external threats. A variety of trenching techniques are used that are dependent on the seabed sediments present and the nature of the product being trenched. The trenching operations can have...
Proceedings Papers

Paper presented at the Offshore Site Investigation and Geotechnics: Integrated Technologies - Present and Future, September 12–14, 2012
Paper Number: SUT-OSIG-12-21
... a simple approach based on strain rate dependent shearing resistance and fluid mechanics drag resistance. 223 The lower lake, which is situated in County Ferman- agh, is located in a deep glacial trough. The lakebed is largely composed of fine-grained sediments and limestone debris of boulder clay...
Proceedings Papers

Paper presented at the Offshore Site Investigation and Geotechnics: Integrated Technologies - Present and Future, September 12–14, 2012
Paper Number: SUT-OSIG-12-23
... developments and shows results from recent sea trials and projects. 1. Introduction As energy and mineral exploration move into deeper water, there is a growing need for highquality drilling, sampling and in situ testing of near-surface seafloor sediments. Hence, a detailed evaluation of the seafloor...
Proceedings Papers

Paper presented at the Offshore Site Investigation and Geotechnics: Integrated Technologies - Present and Future, September 12–14, 2012
Paper Number: SUT-OSIG-12-30
... from 20% to 50% by dry mass. The paper concludes by highlighting relevant implications for the design of pipelines and suction caissons located in similar sediments. 1. Introduction 1.1 Background Very soft offshore sediments within the Gulf of Guinea present sizeable challenges for the design...
Proceedings Papers

Paper presented at the Offshore Site Investigation and Geotechnics: Integrated Technologies - Present and Future, September 12–14, 2012
Paper Number: SUT-OSIG-12-60
... currents in terms of risk due to erosion and redeposition of seabed sediments. 1. Introduction The exploration of deepwater canyon systems for hydrocarbons presents short- and long-term concern for drilling and stability of seabed infrastructure. There is a general perception that canyons...
Proceedings Papers

Paper presented at the Offshore Site Investigation and Geotechnics: Integrated Technologies - Present and Future, September 12–14, 2012
Paper Number: SUT-OSIG-12-65
... in the Arctic Ocean, relict permafrost can be possible. investigation hydrate sediment freezing point arctic offshore reservoir characterization permafrost thickness upstream oil & gas soil temperature russian arctic offshore permafrost soil section stratum reflector pingo pechora...
Proceedings Papers

Paper presented at the Offshore Site Investigation and Geotechnics: Integrated Technologies - Present and Future, September 12–14, 2012
Paper Number: SUT-OSIG-12-71
... to be largely independent of the precise geometry and loading conditions of common jack-up rigs used in the GoS. The highest probability for punch-through conditions is in deeper water environments (>50m water depth) and in areas where large wadis bring abundant sediment into the GoS. 629 trolled levelling...
Proceedings Papers

Paper presented at the Offshore Site Investigation and Geotechnics: Integrated Technologies - Present and Future, September 12–14, 2012
Paper Number: SUT-OSIG-12-76
... upstream oil & gas aid pile design reservoir characterization geological model survey area information sediment interpretation investigation reflector borehole sheringham shoal offshore wind farm 1. Introduction There are currently no recognised guidelines for conducting site...
Proceedings Papers

Paper presented at the Offshore Site Investigation and Geotechnics: Confronting New Challenges and Sharing Knowledge, September 11–13, 2007
Paper Number: SUT-OSIG-07-057
... by sci- entific community. The trial of a new aramid cable onboard the R/V Le Suroît was an opportunity to examine the effect of the elastic recoil of such a cable on the recovered sediment. The use of accelerom- eters allowed for the recording the behaviour of a corer and un- derstanding the effect...
Proceedings Papers

Paper presented at the Offshore Site Investigation and Geotechnics: Confronting New Challenges and Sharing Knowledge, September 11–13, 2007
Paper Number: SUT-OSIG-07-103
... 3. Deterioration of the sediment mechanical properties due to heating as for hydrate bearing sediments, which can induce large stresses in the casing. Casing integrity for wells drilled in hydrate bearing sedi- ments presents a challenge that is explored in this paper. Gas hydrates, or clathrates...
Proceedings Papers

Paper presented at the Offshore Site Investigation and Geotechnics: Confronting New Challenges and Sharing Knowledge, September 11–13, 2007
Paper Number: SUT-OSIG-07-195
... harpoon free fall cone penetrometer osig final penetration resistance undrained shear strength drilling operation reservoir characterization free fall cone penetrometer assessment sensor deployment harpoon ffcpt sediment strength harpoon ffcpt deployment upstream oil & gas...
Proceedings Papers

Paper presented at the Offshore Site Investigation and Geotechnics: Confronting New Challenges and Sharing Knowledge, September 11–13, 2007
Paper Number: SUT-OSIG-07-205
... in the pockmarks, and carbonate boulders are present in the centre of some pockmarks. The surface sediments inside the pockmarks are coarser (sandy/grave- ly) compared to the sediments outside of the pockmarks, which consist of fine clay and silt fractions. The geotechnical test results, in situ monitoring...
Proceedings Papers

Paper presented at the Offshore Site Investigation and Geotechnics: Confronting New Challenges and Sharing Knowledge, September 11–13, 2007
Paper Number: SUT-OSIG-07-221
... foram reservoir characterization structural geology pockmark hydrate upstream oil & gas sea level offshore site investigation characteristic sediment investigation artificial intelligence international offshore site investigation troll area carbonate seafloor concentration...
Proceedings Papers

Paper presented at the Offshore Site Investigation and Geotechnics: Confronting New Challenges and Sharing Knowledge, September 11–13, 2007
Paper Number: SUT-OSIG-07-231
... small scale model testing migration mechanism mechanical model migration major principal stress direction laponite fracture experiment hydraulic fracturing pore throat gas migration operational safety nozzle sediment gas pressure pore throat radius upstream oil & gas...
Proceedings Papers

Paper presented at the Offshore Site Investigation and Geotechnics: Confronting New Challenges and Sharing Knowledge, September 11–13, 2007
Paper Number: SUT-OSIG-07-441
... matter content diffraction sediment gulf quantification laser diffraction sedimentation determination suspension procedure mineral reservoir characterization drilling fluid management & disposal particle size distribution drilling fluids and materials upstream oil & gas...
Proceedings Papers

Paper presented at the Offshore Site Investigation and Geotechnics 'Diversity and Sustainability'; Proceedings of an International Conference, November 26–28, 2002
Paper Number: SUT-OSIG-02-023
... are typically currents along and downslope, which may cause erosion and sediment input or deposition. Triggering mechanisms include, for example, seismicity, soils strength variations due to pore pressure changes, disturbance due to halokinesis, shallow gas and hydrate sublimation and cyclical loading...
Proceedings Papers

Paper presented at the Offshore Site Investigation and Geotechnics 'Diversity and Sustainability'; Proceedings of an International Conference, November 26–28, 2002
Paper Number: SUT-OSIG-02-055
... present a theoretical study of the thermodynamic chemical equilibrium of gas hydrate in sediment, which is based on models previously reported by Handa (1989), Sloan (1998) and Henry (1999). This model fulIy accounts for the latent heat effects. It uses a new formulation based on the enthalpy form...

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