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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
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One of the primary goals of South Korea’s second Ulleung Basin Gas Hydrate Expedition (UBGH2) was to examine the geotechnical properties of the marine sediment associated with methane gas hydrate occurrences found offshore of 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. During UBGH2, concentrated gas hydrate was found in two sedimentary environments: gas hydrate was found in thin, coarse-grained sediment layers interbedded with fine-grained sediment (fines, such as clays and muds) and as veins of essentially pure gas hydrate within predominantly fine-grained...
Categories: Data;
Tags: CMHRP,
Coastal and Marine Hazards and Resources Program,
East Sea,
Geophysics,
South Korea, All tags...
U.S. Geological Survey,
USGS,
Ulleung Basin,
WHCMSC,
Woods Hole Coastal and Marine Science Center,
brine,
core analysis,
deionized water,
diatoms,
earth material properties,
fine-grained sediment,
gas hydrate resources,
geoscientificInformation,
laboratory experiments,
oceans,
settling,
soil sciences, Fewer tags
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Understanding how effectively methane can be extracted from a gas hydrate reservoir requires knowing how compressible, permeable, and strong the overlying seal sediment is. This data release provides results for flow-through permeability, consolidation, and direct shear measurements made on fine-grained seal sediment from Site NGHP-02-08 offshore eastern India. The sediment was collected in a pressure core from the Krishna-Godavari Basin during the 2015 Indian National Gas Hydrate Program Expedition 2 (NGHP-02). Gas hydrate is a crystalline solid that forms naturally in the sediment of certain marine and permafrost environments where pressure is relatively high (equivalent to the pressure measured ~300 meters water...
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Understanding how effectively methane can be extracted from a gas hydrate reservoir requires knowing how compressible, permeable, and strong the overlying seal sediment is. This data release provides results for flow-through permeability, consolidation, and direct shear measurements made on fine-grained seal sediment from Site NGHP-02-08 offshore eastern India. The sediment was collected in a pressure core from the Krishna-Godavari Basin during the 2015 Indian National Gas Hydrate Program Expedition 2 (NGHP-02). Gas hydrate is a crystalline solid that forms naturally in the sediment of certain marine and permafrost environments where pressure is relatively high (equivalent to the pressure measured ~300 meters water...
Categories: Data;
Tags: Bay of Bengal,
CMGP,
Coastal and Marine Geology Program,
Indian Ocean,
Krishna-Godavari Basin, All tags...
U.S. Geological Survey,
USGS,
WHCMSC,
Woods Hole Coastal and Marine Science Center,
core analysis,
drilling and coring,
earth material properties,
fine-grained sediment,
geoscientificInformation,
oceans,
pressure core,
rotary drilling,
soil sciences, Fewer tags
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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
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