Azimuthal AVO analysis, Joffre field, Alberta, Canada
- Colorado School of Mines, Golden, CO (United States)
A 3D, 3C dataset was acquired in the Joffre field (located in South-Central Alberta, Canada) in order to characterize the Nisku carbonate reservoir. This 3D data are well-suited to examine AVO applications in carbonate provinces. Over the last years amplitude variation with offset (AVO) has been successfully applied to identify bright spots and discriminate lithology changes, porosity, fluid content and gas-oil contact in gas filled porous sandstone encased in shale. However, very little reported work has been done to demonstrate the significance of the AVO signature in carbonate rocks. The AVO response in Joffre field was examined on the pre-stack surface data using twelve 180 sq. in. macrobins from the 3D dataset. Analysis of the size and location of the macrobins as well as azimuth-offset distribution is carried out in order to enhance the signal-to-noise ratio and diminish the gaps in the dataset utilized in the AVO analysis. The azimuthal AVO gathers aid in detecting the principal stress directions, and characteristics of azimuthal anisotropy due to mainly parallel vertical fractures. The AVO response reflects the influence of azimuthal anisotropy present in the stratigraphic column at the Joffre field. The azimuthal variation in the AVO gradient, cause by azimuthal anisotropy, is supported by modeling results.
- OSTI ID:
- 542941
- Report Number(s):
- CONF-951013-; TRN: 97:004463-0129
- Resource Relation:
- Conference: SEG `95: 65. annual meeting and international exposition of the Society of Exploration Geophysicists (SEG), Houston, TX (United States), 8-13 Oct 1995; Other Information: PBD: 1995; Related Information: Is Part Of SEG/Houston `95 - technical program; PB: 1623 p.
- Country of Publication:
- United States
- Language:
- English
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