... 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...

... crust drilling equipment metals & mining sample tube core drill skid core drilling machine total duration accuracy nodule sample sediment check valve offshore technology conference drill bit efficient survey tool Introduction: Polymetallic nodules and Manganese (Mn) crust occur...

... Abstract This study presents site-specific CPT-based correlation relationships for preconsolidation pressure, undrained shear strength, relative density and effective friction angle, developed for geotechnical characterization of foundation zone sediments at the Atlantic Shores offshore wind...

... 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...

... 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...

... selection and formulation assessment seafloor mexico structural geology drilling equipment operational safety reservoir characterization offshore technology conference riserless drilling active expulsion feature water flow drilling fluid management & disposal sediment riserless section...

... 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...

... 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...

... and improved to eliminate the associated uneven strain-stress effect by uniformly injecting water to a radial flow vessel. Experimentally, by generating slots near the gravel packing, sand failure dynamics, sand flow paths, and sand production for the clayey-silt sediments can be microscopically observed...

... 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...

... of sediment on a deepwater slope undergoes plastic yielding (and thus permanent deformations) during earthquake, relating permanent displacements along a discrete sliding surface to permanent shear strains may require assumptions that are not straightforward. Shear strain-based criteria are better suited...

... 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...

... prediction pressure transgression mud cut structural geology excess pressure compartmentalization reservoir characterization sediment interface offshore technology conference OTC-30711-MS Kicks and Blowouts Prediction Before and During Drilling in the Over-Pressured Sediments Selim S Shaker...

...Abstract 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...

... This study investigates how the variation in sediment layer geometry of hydrate-bearing sediments (HBS) affects geomechanical behaviors of HBS under depressurization. Two reservoir models with different layering structures but with the same hydrate quantity were constructed and the reservoir...

... tool. The lab reactor was tested in a reservoir simulator to investigate the heat transfer into gas hydrate bearing sediments. Therefore methane hydrate was generated in the LA rge R eservoir S imulator ( LARS ), an autoclave with a volume of 425 L. In a test with 80% hydrate saturation...

... copyright. Abstract Gas hydrates are widespread, occurring in both permafrost and deep sea sediments. The large estimated areas of gas hydrate reservoirs suggest that the high potential of gas hydrates as an energy resource if economically viable production methods were developed. The production of natural...

... hydrate deposits is presented with an emphasis on low frequency exploration 3D seismic for imaging gas hydrate deposits at the base of gas hydrate stability. hydrate stability mcconnell seismic data gas hydrate deposit reservoir characterization reflector saturation sediment gas hydrate...

...OTC-29655-MS Triaxial Test System for Gas Hydrate-Bearing Sediments with Stable Conditions Chul-Whan Kang, KAIST; Ah-Ram Kim, KICT; Gye-Chun Cho, KAIST; Joo Yong Lee, KIGAM Copyright 2019, Offshore Technology Conference This paper was prepared for presentation at the Offshore Technology Conference...

... Engineering , Volume 95 , pp. 116 – 127 . Parsons , D.J. , Friedrichs , C.T. , Traykovski , P.A. , Mohrig , D. , Imran , J. , Syvitski , J.P.M. , Parker , G. , Puig , P. , Buttles , J.L. , and García, M.H. , ( 2007 ), " The Mechanics of Marine Sediment Gravity...