| Title | Hydrocarbon favourability mapping using fuzzy integration: western Sverdrup Basin, Canada
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| Author | Chen, Z ; Embry, A
F; Osadetz, K G; Hannigan, P K |
| Source | Bulletin of Canadian Petroleum Geology vol. 50, no. 4, 2002 p. 492-506, https://doi.org/10.2113/50.4.492 |
| Image |  |
| Year | 2002 |
| Alt Series | Geological Survey of Canada, Contribution Series 2002202 |
| Publisher | GeoScienceWorld |
| Document | serial |
| Lang. | English |
| Media | paper; on-line; digital |
| File format | pdf |
| Province | Nunavut |
| Subjects | Economics and Industry; mathematical and computational geology; fossil fuels; general geology; hydrocarbon potential; hydrocarbons; petroleum provinces; petroleum exploration; oil accumulation; gas
fields; modelling; Heiberg Formation; Sverdrup Basin |
| Illustrations | tables; graphs |
| Program | Program of Energy Research and Development (PERD) |
| Released | 2002 12 01 |
| Abstract | There are several difficulties in characterizing geological conditions favourable for hydrocarbon accumulation in a
frontier region due to the availability and nature of geoscience data. First,
geoscience information from various sources
requires precise representation for spatial analysis. In many cases, the information to be represented is possibilistic or
transient in nature, and it needs a mathematical tool that can adequately
represent the information with a degree of
possibility and/or uncertainty. Second, the uncertainty of interpreting each geological indicator and of correlating the
results with physical parameters of a petroleum accumulation should be expressed
explicitly. Third, the evidence and
indicators of the existence of a petroleum accumulation come from various data sources, varying in degrees of uncertainty.
These uncertainties should be integrated into a petroleum accumulation model so that
exploration risk can be objectively
evaluated in a subsequent economic analysis. We propose the use of a fuzzy integration method to tackle these problems.
The method uses possibility theory to describe the satisfaction levels associated with
each of the essentials for the
formation of hydrocarbon deposits, such as the presence of reservoir, source rock, trap, top seal and preservation in a
spatial domain. The uncertainties associated with data and evaluation are explicitly
incorporated in the aggregate of the
geological factors. The proposed method was applied to the Heiberg Group/Formation of western Sverdrup Basin in the
Canadian Arctic Archipelago to evaluate the geological favourability for petroleum
accumulation. The discovered oil and
gas fields and the areas with computed high favourability display a good geographical correspondence, indicating that the
proposed fuzzy integration method captures the essential spatial characteristics of
petroleum accumulations in the western
Sverdrup Basin. |
| GEOSCAN ID | 213496 |
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