Subsurface brine disposal in the Sauk Sequence of central and western New York: Implications for new salt-cavern gas-storage reservoirs.
Item
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Title
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Subsurface brine disposal in the Sauk Sequence of central and western New York: Implications for new salt-cavern gas-storage reservoirs.
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Identifier
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AAI9820550
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identifier
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9820550
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Creator
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Kolkas, Mossbah M.
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Contributor
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Adviser: Gerald M. Friedman
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Date
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1998
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Language
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English
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Publisher
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City University of New York.
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Subject
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Geology | Environmental Sciences
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Abstract
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Based on the regulations provided by the Department of Environmental Conservation (DEC) and the United States Federal Injecting Control (UIC), a satisfactory method of brine disposal is required for salt-cavern natural gas storage operations. In this research, selected wells from the Sauk Sequence of central and western New York have been chosen to be tested for brine-disposal sites. The study includes facies analysis, diagensis, and petrophysical characteristics (porosity, permeability, recovery efficiency, and fluid saturation) of selected rock samples from the Sauk intervals.;The Cambro-Ordovician Sauk Sequence of central and western New York consists of a basal sandstone sheet (Potsdam Formation) overlain by a carbonate sequence (Theresa Formation). This group is subdivided into lithofacies and microlithofacies based on the lithologic heterogeneities, microstructures, and fossil contents. These lithofacies and microlithofacies were deposited within a shallow marine setting.;The diagenetic sequence of the Beekmantown Group lithologies is established based on the fabrics and the textural analysis using the petrographic microscope, the luminoscope, and the electron microprobe. This sequence records: early dolomitization, silicification, chemical compaction, dedolomitization, and finally late dolomitization. These diagenetic modifications affected the reservoir qualities (porosity, permeability, recovery efficiency, and fluid saturation) within this group.;Petrophysical analysis, using the mercury-injection technique, concluded that the petrophysical parameters, porosity, permeability, recovery efficiency, pore diameters, and fluid saturation vary among the lithofacies and microlithofacies. Supported by capillary pressure tests, the Potsdam Sandstone and some intervals within the Theresa Formation demonstrate high reservoir quality and acceptable thickness that make them excellent sites for brine disposal.
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Type
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dissertation
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Source
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PQT Legacy CUNY.xlsx
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degree
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Ph.D.
