| Title | Hydrocarbon heterogeneity in a Montney core: Indication of drilling mud invasion and implications |
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| Author | Jiang, C ;
Ardakani, O H; Sanei, H; Wood, J M; Ghanizadeh, A; Clarkson, C R |
| Source | GeoConvention 2020, technical program; 2020 p. 1-3  Open
Access |
| Links | Online - En ligne
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| Links | Presentation - Présentation
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| Image |  |
| Year | 2020 |
| Alt Series | Natural Resources Canada, Contribution Series 20200447 |
| Publisher | GeoCovention |
| Meeting | GeoConvention 2020; Calgary; CA; September 21-23, 2020 |
| Document | Web site |
| Lang. | English |
| Media | on-line; digital |
| File format | pdf |
| Province | Alberta |
| NTS | 83M; 83N; 84C; 84D; 84E |
| Area | Peace River |
| Lat/Long WENS | -120.0000 -116.0000 57.5000 55.0000 |
| Subjects | fossil fuels; geochemistry; Science and Technology; petroleum resources; hydrocarbons; organic geochemistry; hydrocarbon geochemistry; mud analyses; core analysis; hydrocarbon recovery; Montney
Formation; Western Canada Sedimentary Basin |
| Illustrations | spectra |
| Program | Geoscience for New Energy Supply (GNES) Canadian Energy Geoscience Innovation Cluster (CEGIC) |
| Released | 2020 09 26 |
| Abstract | (unpublished)
Both bulk and molecular organic geochemical results on samples collected across three full-diameter cores from the Montney Formation in western Canadian sedimentary basin (WCSB)
will be presented along with the hydrocarbon compositions of oil-based mud (OBM) samples collected during the drilling/coring of the wells. It is observed that OBM fluid invasion into the cores has resulted in contamination to the in-situ
hydrocarbons originally present in the Montney Formation siltstone. Therefore, caution should be exercised when cores and cuttings samples from unconventional operations where use of OBM is common are to be used for hydrocarbon resources evaluation.
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| Summary | (Plain Language Summary, not published)
Samples were collected across the diameter of a Montney core, and submitted to the lab for both bulk and molecular organic geochemical analyses. Results
show that the amount and composition in different parts of the core are different, and this variation is caused by the contamination of oil used in the drilling mud. The core periphery is most contaminated, and the core center is least contaminated,
thus the later being preferred over the former for geochemical evaluation and reservoir property tests. |
| GEOSCAN ID | 327264 |
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