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Keywords: sediment
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Proceedings Papers
Geotechnical Site Investigation Over 3500 Meters Depth
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 6–9, 2024
Paper Number: OTC-35269-MS
... of the sediment were identified, with the general soil composition of the area being described as light brown clayed SILT with fine sand and shell fragments in the superficial sediments and dark gray silty CLAY with fine sand in the deeper sediments. The data produced from this campaign shows the possibility...
Proceedings Papers
Towards Standardized Integration of Seafloor Mapping Tools for Offshore Benthic Characterization
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 6–9, 2024
Paper Number: OTC-35388-MS
... sediment artificial intelligence information mapping application social responsibility imagery regression sustainable development seafloor characterization bathymetry integral consulting inc spi-pv imagery strength penetration mbe bathymetry Introduction Offshore energy development...
Proceedings Papers
Monitoring of Drilling Fluids and Cuttings as an Environmental Management Tool for Offshore Fluid Operations
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 6–9, 2024
Paper Number: OTC-35329-MS
... cycle analysis, aiding environmental profiles and impact assessment for different waste management routes. geology geologist drilling fluid formulation drilling operation cuttings hsse standard drilling fluid chemistry regulation assessment sediment mineral drilling fluid management...
Proceedings Papers
Geotechnical Characterization of the US Atlantic Outer Continental Shelf Fine-Grained Cohesive Sediments
Available to PurchaseXiaoyan Long, Jack Fraser, Sudarshan Adhikari, Deanne Hargrave, Proserpine Peralta, Craig Scherschel
Publisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 1–4, 2023
Paper Number: OTC-32197-MS
... and a comprehensive onshore geotechnical laboratory testing program have been performed to understand the site-specific soil behavior. This paper describes the geotechnical properties of the fine-grained cohesive sediments encountered at the study site interpreted based on a consistent framework leveraging...
Proceedings Papers
CPT-Based Geotechnical Characterization of Foundation Zone Sediments at Atlantic Shores Offshore Wind Farm Development
Available to PurchaseAurelian C. Trandafir, Sudarshan Adhikari, Proserpine Peralta, Aaron Broughton, Jack (Dow) Fraser, Deanne Hargrave
Publisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 1–4, 2023
Paper Number: OTC-32512-MS
... sediments, yielded a significantly narrower range compared to the range of undrained shear strengths measured from laboratory tests performed on intact samples acquired at the Lease Area. In this context, the objective of the present study was to develop new site-specific CPT-based correlation relationships...
Proceedings Papers
Geohazards in Riserless Drilling for an Exploration Well in Deepwater GoM: Identification and Mitigations
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 1–4, 2023
Paper Number: OTC-32230-MS
... management & disposal riserless section gulf drilling fluid chemistry drilling fluid selection and formulation assessment geohazard assessment seismic data sediment seafloor mexico information drilling equipment operational safety reservoir characterization offshore technology conference...
Proceedings Papers
Overview of Geological and Geotechnical Conditions of Northern Gulf of Mexico with Emphasis on the Clastic Shelf - An Offshore Wind Energy Development Perspective
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 1–4, 2023
Paper Number: OTC-32548-MS
... All the subregions except subregion 5 (Florida Platform and Florida Escarpment) have relatively thick Quaternary sediment cover, and for these subregions, our study is practically limited to the Quaternary section. The general geologic conditions and potential geohazards at the seafloor...
Proceedings Papers
Wellbore Integrity During Production and Drilling Risk Analysis in Gas Hydrate Bearing Sediments by Coupled THMD Model
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 1–4, 2023
Paper Number: OTC-32322-MS
... and studied. To understand the thermal-hydraulic-mechanical behavior with hydrate decomposition (THMD) process and to simulate the THM responses of hydrate gas bearing sediments to wellbore pressure and temperature variations under a given in-situ stress regime during drilling and production, a fully coupled...
Proceedings Papers
Integrated and Adaptable Approach to Mapping Benthic Habitats to Support Offshore Wind Development off the Mid-Atlantic Outer Continental Shelf
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 1–4, 2023
Paper Number: OTC-32390-MS
... survey data consisted of grab sample tests (grain size), macrofaunal taxonomy, sediment profile and plan view imagery (SPI-PV), video imagery from each grab station, and towed video transects. Acoustic data products were processed and interpreted to create polygons of seafloor sediment coverage over...
Proceedings Papers
Integrated Assessment of Seafloor and Subsurface Site Conditions at Atlantic Shores Offshore Wind Farm Development
Available to PurchaseStephen Varnell, Aurelian C. Trandafir, Victoria Fortiz, Aaron Broughton, Craig Scherschel, Deanne Hargrave, Eric Swanson, Jack Fraser
Publisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 1–4, 2023
Paper Number: OTC-32431-MS
... sediments and morphology, subsurface geologic features, stratigraphy, soil provinces, and soil profiles are presented and discussed. Soil province variability across the Lease Area has been successfully delineated in detail through the ground model methodology presented in this paper. Geotechnical...
Proceedings Papers
Using Geophysics and Geotechnics to Maximize the Building of a Paleolandscape Reconstruction for Both an Archaeological and Geological History
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 1–4, 2023
Paper Number: OTC-32533-MS
... reconstruction atlantic shore offshore technology conference multi-phase approach lease area collaboration sediment reconstruction process reservoir characterization interpretation paleolandscape reconstruction reflector history upstream oil & gas wind energy age date deposit preservation...
Proceedings Papers
Making Deep Sea Mining Cleaner and Greener
Available to PurchaseSteven A. Rizea, John E. Halkyard, Jim Wodehouse, Robert D. Blevins, Lori Johnston, James Adamson, Kamlesh Joshi
Publisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 1–4, 2023
Paper Number: OTC-32535-MS
... Abstract This paper describes concepts to minimize the plume generated by unwanted sediments collected along with manganese nodules during hydraulic mining operations. The concept consists of two novel technologies: separating all sediment from the collected nodule slurry to eliminate sediment...
Proceedings Papers
Geological and Geotechnical Considerations for Floating Offshore Wind Infrastructure within the U.S. Atlantic OCS
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 1–4, 2023
Paper Number: OTC-32578-MS
...). General sediment conditions for both these provinces include Holocene-Pleistocene age silts and clays with intervals of sandy clay or sandy layers related to mass transport deposits (MTDs) from gravity flows. A key difference between the provinces is the potential for older geological units...
Proceedings Papers
Efficient Survey Tools for an Improved Understanding of Deep Seabed Minerals
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 1–4, 2023
Paper Number: OTC-32490-MS
... metals & mining sample tube upstream oil & gas sub-sea system manipulator core drill total duration accuracy nodule sample drill bit efficient survey tool skid core drilling machine sediment check valve Introduction: Polymetallic nodules and Manganese (Mn) crust occur...
Proceedings Papers
The Importance of Secondary Traps and Sinks in Offshore CO2 Sequestration
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 1–4, 2023
Paper Number: OTC-32529-MS
... modeling there is capability to select efficient storage locations in the deep coastal sediment and provide accurate assessment of CO2 residence time. We propose that even if reservoirs leak CO2, abiotic and biogeochemical reactions from the injection point to the ocean floor surface provide diverse traps...
Proceedings Papers
Characterization of Sand Production for Clayey-Silt Sediments Conditioned to Hydraulic Slotting and Packing: Experimental Observations, Theoretical Formulations, and Modeling
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 2–5, 2022
Paper Number: OTC-31777-MS
.... 2021a ). Jung et al. (2012) experimentally demonstrated the occurrence of fines migration, clogging, small cavities, and gas driving fracturing by monitoring the shear-wave velocity during CO 2 hydrate dissociation. By measuring the sand production and deformation of a hydrate-bearing sediment (HBS...
Proceedings Papers
Seismic Coefficients for Simplified Deepwater Slope Stability Assessment Under Earthquake Loading
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, August 16–19, 2021
Paper Number: OTC-31056-MS
... displacement permanent displacement seismic coefficient seismic coefficient selection reservoir characterization shear strain seafloor value correlation relationship sediment seafloor deepwater slope category 2 Introduction Evaluation of seismic stability of submarine slopes represents...
Proceedings Papers
Seismic Attributes and Acoustic Inversion for Shallow Marine Slope Stratigraphy Analysis
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, August 16–19, 2021
Paper Number: OTC-31102-MS
... complex shallow sediments. Instantaneous amplitude, phase, and frequency are the most widely used seismic attributes to indicate geological features, but those time-domain data are too limited to define an accurate subsurface model in depth. Therefore, seismic inversion is also required to generate...
Proceedings Papers
Balanced Characterisation of Fine-Grained Soils: Application to Carbonate Sediments
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 4–7, 2020
Paper Number: OTC-30485-MS
... Abstract For subsea structures placed on soft seabed comprising fine-grained sediments, geotechnical design may be equally governed by the foundation settlement and stability requirements. For this reason, the soil stress history parameter, i.e. yield stress (σ y ), becomes as important...
Proceedings Papers
Probabilistic Seismic Inversion for Shallow Site Characterization on the Hydrate Ridge Area
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 4–7, 2020
Paper Number: OTC-30573-MS
... quantitative information on the composition of the sediments and their physical properties. Seismic inversion is a method to convert the wave signals from time-to space-domain and derive specific material properties by using iterative numerical modeling. In this paper, we introduce a probabilistic seismic...
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