| Title | Mapping basin-wide H2S distribution in the Montney Formation |
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| Author | Kingston, A ;
Ardakani, O; Mackie, S; Pederson, P |
| Source | GeoConvention 2020, abstracts; 2020 p. 1  Open
Access |
| Links | Online - En ligne
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| Image |  |
| Year | 2020 |
| Alt Series | Natural Resources Canada, Contribution Series 20210284 |
| Publisher | GeoConvention Partnership |
| Meeting | GeoConvention 2020; September 21-23, 2020 |
| Document | serial |
| Lang. | English |
| Media | digital; on-line |
| File format | pdf |
| Province | Alberta; British Columbia |
| NTS | 83C; 83E; 83F; 83K; 83L; 83M; 83N; 84C; 84D; 84E; 84L; 93J; 93O; 93P; 94A; 94B; 94G; 94H; 94I; 94J |
| Area | Fort St. John; Grande Prairie |
| Lat/Long WENS | -123.0000 -116.2500 58.2500 52.7500 |
| Subjects | fossil fuels; geochemistry; stratigraphy; structural geology; Science and Technology; Nature and Environment; petroleum resources; hydrocarbons; gas; hydrocarbon recovery; hydrogen sulphide; reservoirs;
bedrock geology; structural features; Montney Formation |
| Program | Energy Geoscience Program Coordination |
| Released | 2020 09 01 |
| Abstract | The Montney is one of the most productive unconventional reservoirs in western Canada and one of Canada's most economic gas plays (CER, 2013). However, production is hampered by the regional occurrence
of hydrogen sulfide (H2S) gas, which occurs in varying concentrations within hydrocarbon reservoirs. H2S is a toxic and corrosive gas which greatly affects the safety and economics of natural gas production and even minor amounts can necessitate
bespoke engineering requirements. The goal of this project is to produce a comprehensive basin-wide map of H2S distribution in the Montney Formation to allow better prediction and assessment of the potential for H2S occurrence for economic,
environmental, and safety benefit.
H2S measurements produced by industry are archived provincially by either the Alberta Energy Regulator or British Columbia Oil and Gas Commission. This study combines H2S concentration data from these two
provincial databases to produce an interprovincial, basin-wide map of H2S distribution in the Montney Formation. In addition, H2S concentration data will be assigned to Montney Formation stratigraphic members (i.e., Upper, Middle and Lower) in order
more accurately assess the distribution both laterally and vertically within the basin. Members of the Montney are stratigraphically identified based on the work of Zonneveld and Moslow (2018), which clarified and formalized the units of Davies et
al. (1997) and Davies et al. (2018).
Preliminary results indicate several broad-scale trends in H2S distribution including: (1) H2S concentrations are in general higher and more widespread in the southeast part of the basin and more moderate and
spatially limited in the northwest; (2) two areas of high H2S concentrations are readily identifiable, one in Alberta and one in British Columbia that are mainly associated with major structural features in the basin; and (3) generally in Alberta
higher H2S concentrations occur in the Lower Montney in contrast higher H2S concentrations are observed in the Upper Montney in British Columbia. |
| Summary | (Plain Language Summary, not published)
The Montney Formation is one of Canada’s most prolific hydrocarbon reservoirs however, production is hampered by regional occurrence of hydrogen sulfide,
a toxic and corrosive gas. A map of hydrogen sulfide concentrations in the Montney was produced to highlight its distribution across the basin to aid regulators and operators identify regions at higher risk for encountering hydrogen
sulfide. |
| GEOSCAN ID | 328939 |
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