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2D micromodel studies of pore-throat clogging by pure fine-grained sediments and natural sediments from NGHP-02, offshore India

Dates

Publication Date
Time Period
2015-05-22
Time Period
2015-06-18

Citation

Cao, S.C., Jang, J., Jung, J., Waite, W.F., Collett, T.S., and Kumar, P., 2018, 2D micromodel studies of pore-throat clogging by pure fine-grained sediments and natural sediments from NGHP-02, offshore India: U.S. Geological Survey data release, https://doi.org/10.5066/P9PZ5M7E.

Summary

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 chemistry as pore-fluid [...]

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Attached Files

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Fines_Micromodel_BrowseGraphic.png
“Image showing bentonite clusters clogging pore throats in a 2D glass micromodel.”
thumbnail 245.89 KB
2D_Micromodel_Fines_Data.csv
“Data in CSV format.”
3.16 KB
2D_Micromodel_Fines_Data.xlsx
“Data in XLSX format.”
42.24 KB
2D_Micromodel_Fines_Data_meta.xml
“CSDGM metadata.”
Original FGDC Metadata

View
36.29 KB

Purpose

This dataset provides a comprehensive relationship between the minimum concentration of fines (concentration = mass of fines divided by the mass of fluid) required to clog two-dimensional micromodel pore throats of various sizes. The clogging dependence is captured in terms of the sediment type, the ratio of the mean particle size to the pore throat size, the pore fluid chemistry (fresh water or brine) and whether or not there is a gas/water meniscus. Each of these parameters provides information required for estimating the clogging potential of fines in natural settings, such as in sediments where gas hydrates are being destabilized to extract the methane as an energy resource.

Additional Information

Identifiers

Type Scheme Key
DOI https://www.sciencebase.gov/vocab/category/item/identifier doi:10.5066/P9PZ5M7E

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