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TitleA study of aquifer vulnerability to hydrocarbon development in southern New Brunswick
AuthorRivard, C; Lavoie, D; Pinet, N; Duchesne, M J; Bordeleau, G; Séjourné, S; Huchet, F; Lefebvre, R; Brake, V; Crow, H; Malet, X
SourceGeoOttawa 2017, proceedings; 2017 p. 1-8
Year2017
Alt SeriesNatural Resources Canada, Contribution Series 20170281
PublisherIAH
MeetingGeoOttawa 2017 - 70th Canadian Geotechnical Conference and the 12th Joint CGS/IAH-CNC Groundwater Conference; Ottawa, ON; CA; October 1-4, 2017
Documentbook
Lang.English
Mediapaper; digital
File formatpdf
ProvinceNew Brunswick
NTS21H/10; 21H/11; 21H/12; 21H/13; 21H/14; 21H/15; 21I/02; 21I/03; 21I/04
AreaSussex; Elgin
Lat/Long WENS -65.7500 -64.7500 46.7500 46.0000
Subjectshydrogeology; fossil fuels; environmental geology; geochemistry; geophysics; engineering geology; groundwater resources; aquifers; water quality; petroleum industry; hydrocarbon recovery; gas; reservoir rocks; groundwater geochemistry; water wells; methane; observation wells; hydrocarbons; fluid flow; geophysical interpretations; seismic interpretations; bedrock geology; lithology; sedimentary rocks; structural features; faults; Magdalen Basin; Moncton Subbasin; McCully Gas Field; Horton Group; Sussex Group; Mabou Group; Windsor Group; Cumberland Group; microbes; geomechanical analyses; Phanerozoic; Paleozoic; Carboniferous; Devonian
Illustrationslocation maps; geoscientific sketch maps; stratigraphic charts; cross-sections; seismic profiles; plots
ProgramShale Gas - New Brunswick aquifers, Environmental Geoscience
Released2017 10 04
AbstractA project studying potential fluid upward migration from deep gas reservoirs to shallow aquifers is ongoing in the Sussex area, southern New Brunswick. Since the intermediate zone is poorly characterized, this project relies on the integration of multi-source direct and indirect data. Initial groundwater chemistry showed that only a few shallow water wells contain methane with either a thermogenic or a microbial signature. One shallow observation well revealed the presence of gaseous microbial methane from a core sample, while long-chain hydrocarbons (C19+) were found in drill cuttings. Further investigation is required to identify the sources of hydrocarbons. The intermediate zone appears to provide an effective barrier to upward fluid migration based on the geological interpretation of reprocessed seismic data and a geomechanical study. This project will provide a scientific basis to support informed decisions by provincial authorities on future hydrocarbon development.
Summary(Plain Language Summary, not published)
A project studying potential fluid upward migration from deep gas reservoirs to shallow aquifers is ongoing in the Sussex area, southern New Brunswick. Since the intermediate zone is poorly characterized, this project relies on the integration of multi-source direct and indirect data. Initial groundwater chemistry showed that only a few shallow water wells contain methane with either a thermogenic or a microbial signature. One shallow observation well revealed the presence of gaseous microbial methane from a core sample, while long-chain hydrocarbons were found in drill cuttings. Further investigation is required to identify the sources of hydrocarbons. The intermediate zone appears to provide an effective barrier to upward fluid migration based on the geological interpretation based on reprocessed seismic data and a geomechanical study. This project will provide a scientific basis to support informed decisions by provincial authorities on future hydrocarbon development.
GEOSCAN ID306275