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TitleSeismic imaging of a thin unconventional reservoir in highly attenuating media: the case of the Macasty Formation, Anticosti Island, Canada.
AuthorDuchesne, M J D; Chen, Z C; Lavoie, D L
SourceSociety of Exploration Geophysicists, Annual International Meeting, Abstracts (2016), 2016 p. 2775-2779, https://doi.org/10.1190/segam2016-13844039.1
Year2016
Alt SeriesEarth Sciences Sector, Contribution Series 20160058
PublisherSociety of Exploration Geophysicists
Documentserial
Lang.English
Mediapaper; on-line; digital
File formatpdf
ProvinceEastern offshore region; Quebec
NTS12F/04; 12F/05; 12E; 22H/16
AreaAnticosti Island
Lat/Long WENS -64.5000 -61.5000 50.0000 49.0000
Subjectsseismic surveys; seismic data; seismic waves; seismic interpretations; reservoirs; Macasty Formation; Total Organic Carbon (TOC); unconventional reservoirs; Q-phase compensation; zero-phase deconvolution; Silurian; Ordovician
ProgramShale Reservoir Characterization, Geoscience for New Energy Supply (GNES)
AbstractSeismic wave propagation through the subsurface is characterized by a loss of high frequency energy that is desired for high-resolution imaging at depth. This means that the size of geological features that can be resolved increases with depth. In this respect, exploration of thin-layered unconventional reservoirs represents a significant challenge for seismic imaging. The case of the Macasty Formation, a thin-layered shale reservoir included in a highly attenuating limestone-dominated Silurian-Ordovician succession, is discussed. The core of the processing flow consists of Q-phase compensation, zero-phase deconvolution and a 90o-phase conversion obtained from minimum-phase Butterworth filtering. Processing results provide 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 of the pay-zone.
Summary(Plain Language Summary, not published)
A new seismic processing flow is proposed to recover high frequency energy that is necessary provide high-resolution imaging at depth. THe flow is developed and applied using the case of the Macasty Formation, a thin-layered shale reservoir included in a highly attenuating limestone-dominated Silurian-Ordovician succession. Processing results provide a new seismic image that resolves internal high amplitude reflections within the reservoir that
GEOSCAN ID298771