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TitleDiagenetic study of Tertiary sequences, Beaufort-Mackenzie Basin - Phase 1
LicencePlease note the adoption of the Open Government Licence - Canada supersedes any previous licences.
AuthorCMH Petrology Consultant Inc.
SourceGeological Survey of Canada, Open File 7138, 2012, 1014 pages, Open Access logo Open Access
PublisherNatural Resources Canada
Documentopen file
Mediaon-line; digital
RelatedThis publication is related to Petrological/diagenetic study of Upper Cretaceous and Tertiary strata, Beaufort-Mackenzie Basin, Phase I: preliminary analysis and interpretation of samples from core, outcrop, and drill cuttings
File formatpdf
ProvinceNorthwest Territories; Northern offshore region
NTS107A; 107B; 107C; 107D; 107E; 117A/01; 117A/02; 117A/07; 117A/08; 117A/09; 117A/10; 117A/15; 117A/16
AreaMackenzie River; Mackenzie Basin; Beaufort Sea
Lat/Long WENS-137.0000 -128.0000 71.0000 68.0000
Subjectssedimentology; mineralogy; igneous and metamorphic petrology; fossil fuels; diagenesis; sedimentary rocks; sandstones; reservoirs; fluid migration; porosity; petrographic analyses; maturation; mineralogical analyses; depositional environment; basins; petrography; petroleum; petroleum exploration; petroleum occurrence; Beaufort-Mackenzie Basin; Aklak Sequence; Taglu Sequence; Richards Sequence; Kugmallit Sequence; B.A. Shell I.O.E. Reindeer D-27; Shell Unipkat I-22; IMP Ikattok J-17; I.O.E. Ellice O-14; Dome et al. Adlartok P-09; Taglu C-42; Ellice O-14; Mallik A-06; Niglintgak M-19; Unipkat I-22; Ivik J-26; Mallik A-06; Pullen E-17; Amerk O-09; Cenozoic; Mesozoic; Cretaceous; Tertiary
Illustrationstables; photographs; photomicrographs
ProgramGEM: Geo-mapping for Energy and Minerals Mackenzie Delta and Corridor
Released2012 05 31
AbstractThe Geological Survey of Canada (GSC) is involved with a multi-disciplinary study of petroleum systems of the Beaufort-Mackenzie region of Arctic Canada under the Earth Sciences Sector Geo-Mapping for Energy and Minerals (GEM) Program. As part of this research, a contracted petrological study of petroleum reservoir quality was undertaken to investigate the post-depositional controls on porosity and permeability of the Tertiary (Paleogene age; 62 - 24 Ma) sedimentary sequences (Aklak, Taglu, Richards and Kugmallit sequences) that host petroleum discoveries in the area. Porosity is important for calculating the volume of petroleum within a reservoir and permeability affects that rate at which petroleum can be produced. Both parameters are critical for evaluating the economic viability of individual petroleum prospects and for assessing the petroleum resource potential of the area. Generally, porosity and permeability are high at the time of sediment deposition but both are reduced by mechanical compaction with increasing sediment burial. As temperature and burial depth increase, diagenetic processes such as mineral dissolution or precipitation (cementation) can further enhance or reduce porosity and permeability. This study focuses on how cementation processes affect reservoir quality and it builds on the previous work of Dr. Volkmar Schmidt which is summarized in GSC Open File 1534. The report is rich in petrographic descriptions and contains many photographic images of rock cores and thin sections used for microscopic examination. These results provide a firm foundation for future studies of the diagenetic evolution of sedimentary successions of the Beaufort-Mackenzie Basin. This study was funded by the former Beaufort-Mackenzie consortium of companies (BP Canada Energy Company, Chevron Canada Limited, ConocoPhillips Canada Resources Corporation, Imperial Oil Resources Ventures Limited, MGM Energy Corporation, and Shell Exploration and Production Company).

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