|
|
Fine-grained sediments, or “fines,” are nearly ubiquitous in natural sediments, even in the predominantly coarse-grained sediments that host gas hydrates. Fines within these sandy sediments can be mobilized and subsequently clog flow pathways while methane is being extracted from gas hydrate as an energy resource. Using two-dimensional (2D) micromodels to test the conditions in which clogging occurs provides insights for choosing production operation parameters that optimize methane recovery in the field. During methane extraction, several processes can alter the mobility and clogging potential of fines: (1) fluid flow as the formation is depressurized to release methane from gas hydrate, (2) shifting pore-fluid...
Categories: Data;
Tags: 2D micromodel,
Bay of Bengal,
Department of Civil and Environmental Engineering,
Geophysics,
Indian Ocean, All tags...
Krishna-Godavari Basin,
Laboratory,
Louisiana State University,
Louisiana State University, Department of Civil and Environmental Engineering,
Marine Geology,
NGHP-02,
NGHP-02-09,
NGHP-02-16,
Woods Hole Coastal and Marine Science Center, U.S. Geological Survey,
bentonite,
brine,
calcium carbonate,
clogging,
deionized water,
diatoms,
earth material properties,
fine-grained sediment,
gas hydrate resources,
geoscientificInformation,
illite,
image analysis,
kaolin,
laboratory experiments,
mica,
natural resource extraction,
optical microscopy,
permeability,
silica silt,
soil sciences, Fewer tags
|
One goal of Korea’s second Ulleung Basin Gas Hydrate Expedition, UBGH2, is to examine geotechnical properties of the marine sediment associated with methane gas hydrate occurrences found offshore eastern Korea in the Ulleung Basin, East Sea. Methane gas hydrate is a naturally occurring crystalline solid that sequesters methane in individual molecular cages formed by a lattice of water molecules. Offshore Korea, gas hydrate is found in thin, coarse-grained sediment layers that are interbedded with fine-grained sediment. Methane gas hydrate is a potential energy resource, but whether extracting methane from gas hydrate in these layered marine environments is technically and economically viable remains an open research...
Categories: Data;
Tags: CMHRP,
Coastal and Marine Hazards and Resources Program,
East Sea,
Energy Resources,
Marine Geology, All tags...
Soil Sciences,
South Korea,
U.S. Geological Survey,
USGS,
Ulleung Basin,
WHCMSC,
Woods Hole Coastal and Marine Science Center,
brine,
core analysis,
deionized water,
earth material properties,
fine-grained sediment,
gas hydrate resources,
geoscientificInformation,
kerosene,
laboratory experiments,
oceans,
settling,
soil sciences, Fewer tags
|
The safety, effectiveness and longevity of many construction and geotechnical engineering projects rely on correctly accounting for the evolution of soil properties over time. Critical sediment properties, such as compressibility, can change in response to pore-fluid chemistry changes, particularly if the sediment contains appreciable concentrations of fine-grained materials. Pore-fluid changes act at the micro scale, altering interactions between sediment particles, or between sediment particles and the pore fluid. These micro-scale alterations change how sediment fabrics and void ratios develop, which directly impacts macro-scale properties such as sediment compressibility. The goal of this study is to correlate...
Categories: Data;
Tags: CMGP,
Coastal and Marine Geology Program,
Laboratory,
U.S. Geological Survey,
U.S. Geological Survey, All tags...
USGS,
WHCMSC,
Woods Hole Coastal and Marine Science Center,
Woods Hole Coastal and Marine Science Center,
brine,
calcium carbonate,
compressibility,
consolidation,
deionized water,
diatoms,
earth material properties,
fine-grained sediment,
geoscientificInformation,
illite,
kaolin,
kerosene,
mica,
recompresibility,
silica silt,
soil sciences, Fewer tags
|
The safety, effectiveness and longevity of many construction and geotechnical engineering projects rely on correctly accounting for the evolution of soil properties over time. Critical sediment properties, such as compressibility, can change in response to pore-fluid chemistry changes, particularly if the sediment contains appreciable concentrations of fine-grained materials. Pore-fluid changes act at the micro scale, altering interactions between sediment particles, or between sediment particles and the pore fluid. These micro-scale alterations change how sediment fabrics and void ratios develop, which directly impacts macro-scale properties such as sediment compressibility. The goal of this study is to correlate...
Categories: Data;
Tags: CMGP,
Coastal and Marine Geology Program,
Laboratory,
U.S. Geological Survey,
U.S. Geological Survey, All tags...
USGS,
WHCMSC,
Woods Hole Coastal and Marine Science Center,
Woods Hole Coastal and Marine Science Center,
bentonite,
brine,
calcium carbonate,
deionized water,
diatoms,
earth material properties,
fine-grained sediment,
geoscientificInformation,
illite,
kaolin,
kerosene,
mica,
settling,
silica silt,
sodium hexametaphosphate,
soil sciences, Fewer tags
|
The safety, effectiveness and longevity of many construction and geotechnical engineering projects rely on correctly accounting for the evolution of soil properties over time. Critical sediment properties, such as compressibility, can change in response to pore-fluid chemistry changes, particularly if the sediment contains appreciable concentrations of fine-grained materials. Pore-fluid changes act at the micro scale, altering interactions between sediment particles, or between sediment particles and the pore fluid. These micro-scale alterations change how sediment fabrics and void ratios develop, which directly impacts macro-scale properties such as sediment compressibility. The goal of this study is to correlate...
|
|
