| Title | A processing strategy for high-resolution seismic imaging of thin unconventional reservoirs: application to the Macasty Formation, Anticosti Island, Canada |
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| Author | Duchesne, M J ;
Chen, Z; Lavoie, D; Pinet, N; Brake, V I |
| Source | Canadian Society of Exploration Geophysicists, Recorder vol. 45, no. 1, 2020 p. 1-18  Open Access |
| Links | Online - En ligne
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| Image |  |
| Year | 2020 |
| Alt Series | Natural Resources Canada, Contribution Series 20190493 |
| Publisher | Canadian Society of Exploration Geophysicists |
| Document | serial |
| Lang. | English |
| Media | on-line; digital |
| File format | pdf; html |
| Province | Quebec |
| NTS | 12E; 12F; 22H/09; 22H/16 |
| Area | Anticosti Island |
| Lat/Long WENS | -64.5000 -61.5000 50.0000 49.0000 |
| Subjects | geophysics; fossil fuels; Science and Technology; Nature and Environment; Upper Ordovician; geophysical surveys; seismic surveys; seismic waves; seismic velocities; seismic data; energy resources;
petroleum resources; hydrocarbon potential; hydrocarbons; reservoir rocks; bedrock geology; lithology; sedimentary rocks; shales; limestones; organic carbon; Macasty Formation; Anticosti Basin; Jupiter Fault; Data processing; Phanerozoic; Paleozoic;
Ordovician |
| Illustrations | seismic sections; profiles; seismic profiles; spectra; schematic representations; plots; photographs |
| Program | Geoscience for New Energy Supply (GNES) Program Coordination |
| Released | 2020 02 01 |
| Abstract | (Summary)
Prior to the halt of oil and gas exploration on Anticosti Island in 2017, the Geological Survey of Canada had initiated five research activities related to unconventional resource
exploration and development on the island. One such activity aimed to improve the seismic imaging of the Macasty Formation. This thin-layered shale reservoir is located beneath a highly attenuating limestone-dominated Silurian-Ordovician succession
that leads to a loss of high frequency energy desired for high-resolution imaging at the depth of the reservoir. To recover high frequency energy and thus improve the imaging of the Macasty Formation, Q-phase compensation, zero-phase deconvolution
and a 90°-phase rotation followed by the application of a Butterworth filter are applied. Results yield an amplitude spectrum that is flatter and broader compared to the original data. New imaging resolves internal high amplitude reflections within
the reservoir that are correlative to higher TOC values. |
| Summary | (Plain Language Summary, not published)
Prior to the halt of oil and gas exploration on Anticosti Island in 2017, the Geological Survey of Canada had initiated five research activities related
to unconventional resource exploration and development of the Macasty Formation on the island. One such activity aimed to improve the seismic imaging of the Macasty Formation. The new seismic processing flow presented in this technical paper allows
to improve the seismic imaging of the Macasty Formation. New imaging resolves internal reflections within this geological formation that are correlative to higher total organic content values. |
| GEOSCAN ID | 321635 |
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