1-20 of 1174 Search Results for

Effect of anisotropy on AVO

Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3211060
... (1986) accounted for the effects of seis- mic anisotropy in the seismic method. Bork et al. (1997) and Hilterman (2001) provided examples with anisotropic forward modeling in order to show significant differences between the AVO responses with and without anisotropy. More impor- tantly, they also...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, July 22–24, 2019
Paper Number: URTEC-2019-480-MS
... geomechanical properties of organic rich shales has direct influence on the drilling and development of unconventional reservoirs. Amplitude Variation with Offset (AVO) inversion may make important contributions to such tasks, since it is an effective method to estimate acoustic and elastic parameters of target...
Proceedings Papers

Paper presented at the 2002 SEG Annual Meeting, October 6–11, 2002
Paper Number: SEG-2002-0105
... unconsolidated sand Stress-induced anisotropy in unconsolidated sands and its effect on AVO analysis Shiyu Xu*, Subsurface Imaging Division, ExxonMobil Upstream Research Company Summary In a recent rock physics study, anomalously high Vp/Vs ratios were observed relative to expectations in unconsolidated...
Proceedings Papers

Paper presented at the 2005 SEG Annual Meeting, November 6–11, 2005
Paper Number: SEG-2005-0277
... to AVO equations. The effect of abnormally high reservoir attenuation on AVO analysis Mark Chapman* and Enru Liu, Edinburgh Anisotropy Project, British Geological Survey. Summary Analysis of seismic data suggests that hydrocarbon deposits are often associated with higher than usual values of...
Proceedings Papers

Paper presented at the 1995 SEG Annual Meeting, October 8–13, 1995
Paper Number: SEG-1995-0336
... analysis geologic model black curve anisotropic overburden The effects of TI anisotropy on AVO inversion: A field-based study IN3.2 Christian Hanitzsch*, M. Ali C. Tura, Elf Geoscience Research Centre, UK; Richard T. Coates, Schlumberger Cambridge Research, UK; and Wafik B. Beydoun, Elf Aquitaine...
Proceedings Papers

Paper presented at the 2016 SEG International Exposition and Annual Meeting, October 16–21, 2016
Paper Number: SEG-2016-13962042
... Annual Meeting Effects of overburden and thin layers on azimuthal AVO When interpreting AVO or amplitude anomalies, wedge modeling is commonly used to understand tuning effects. We have not seen any application of wedge modeling to HTI-type anisotropy in the literature. We generate a series of models...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3215825
... with offset (AVO) or amplitude variations with incidence angle (AVA) inversion method is commonly used in the petroleum industry, which can relate reservoir properties with the seismic data effectively (Buland and Omre, 2003; Hampson, 1991; Lu et al., 2018). The reflectivity calculation using the...
Proceedings Papers

Paper presented at the 2006 SEG Annual Meeting, October 1–6, 2006
Paper Number: SEG-2006-1173
.... Quantitative analysis of the effect of noise on azimuthal AVO inversions is not performed in this study. However, it is expected that the sensitivity of each AVO parameter to noise increases with the power of sin in the corresponding AVO equations. The more sensitive a parameter is to noise, the less stable...
Proceedings Papers

Paper presented at the 2013 SEG Annual Meeting, September 22–27, 2013
Paper Number: SEG-2013-0465
...; Sondergeld and Rai, 2011). The purpose of this paper is to investigate the effect of anisotropy on the AVO response of organic-rich shales. This is done by using parameters given by Vernik and co- workers in their study of the Bakken shale. Theory Based on petrographic and SEM observations, Vernik and Landis...
Proceedings Papers

Paper presented at the 2010 SEG Annual Meeting, October 17–22, 2010
Paper Number: SEG-2010-0483
..., azimuthal AVO and anisotropy intensity. Vlastos et al. (2003) applied this scheme to study the effect of different fracture spatial distribution on the seismic response. And also Vlastos et al. (2003) had built three 2D fractured models to study scattering attenuation at the different stages of the fracture...
Journal Articles
SPE Reservoir Evaluation & Engineering 11 (04): 719–725.
Paper Number: SPE-101597-PA
Published: 01 August 2008
... & Engineering set. The anisotropy anomalies suggested a zone of high fracture density near faults. On the fold crest, AzAVO inversion quality was low (less than 50% fit). The amplitude (A0), AVO slope (B0), and anisotropy magnitude (B1) volumes showed crestal amplitude dimming at the reservoir. The magnitude...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3214237
... 89th Annual Meeting REFERENCES Asaka, M., 2018, Anisotropic AVO: Implications for reservoir characterization: The Leading Edge, 37, 916 923, httpsdoi.org/10.1190/tle37120916 .1. Bachrach, R., 2011, Elastic and resistivity anisotropy of shale during compaction and diagenesis: Joint effective medium...
Proceedings Papers

Paper presented at the 2016 SEG International Exposition and Annual Meeting, October 16–21, 2016
Paper Number: SEG-2016-13967757
... numerical simulation is more accurate than simple approximations, the approximations are much more physically intuitive for AVO interpretation. To investigate the effects of fracture density on the P-wave reflection coefficients, shale/sand models are created that represent class 1, 2, 3 sand systems in...
Proceedings Papers

Paper presented at the 2017 SEG International Exposition and Annual Meeting, September 24–29, 2017
Paper Number: SEG-2017-17740527
... properties of organic rich shales has direct impact on the drilling and development of unconven- tional reservoirs. Amplitude Variation with Offset (AVO) in- version may make important contributions to such tasks, since it is an effective method to infer acoustic and elastic parame- ters of target layers...
Proceedings Papers

Paper presented at the 1998 SEG Annual Meeting, September 13–18, 1998
Paper Number: SEG-1998-0212
.... This simpli cation may result in pitfalls in the AVO interpretations. In order to analyze AVO properly it is necessary to consider more realistic models including anisotropy in these studies. Recent works clearly show the importance of anisotropy on the AVO analysis. Kim et al. (1993) and Blangy (1994...
Proceedings Papers

Paper presented at the 2018 SEG International Exposition and Annual Meeting, October 14–19, 2018
Paper Number: SEG-2018-2997307
... ABSTRACT Shear wave anisotropy has been widely used for characterizing the factures in a reservoir. Most of previous approaches to modelling dispersive effects on anisotropy assume the fractured medium being fully saturated. Here we address this issue by calculating elastic constants of a...
Proceedings Papers

Paper presented at the 2018 SEG International Exposition and Annual Meeting, October 14–19, 2018
Paper Number: SEG-2018-2995941
... ABSTRACT A well log penetrating the Lower Silurain shale (S1l) in the south of the Sichuan Basin shows that this shale formation represents strong VTI (vertically transverse isotropy) properties. Anisotropy has significant influence on the seismic amplitude variation with offset (AVO) response...
Proceedings Papers

Paper presented at the 2005 SEG Annual Meeting, November 6–11, 2005
Paper Number: SEG-2005-0150
..., offshore North-West Shelf, Western Australia is used here to show that seal anisotropy can have the first order effect on AVO gradient for moderate to far offset range. Moreover, significant variation of the seal anisotropy across the field further complicates AVOAz response and makes characterization of...
Proceedings Papers

Paper presented at the Abu Dhabi International Petroleum Exhibition and Conference, November 5–8, 2006
Paper Number: SPE-101597-MS
... (1, 2, 3, 4). Azimuthal NMO (AzNMO) detects anisotropy using the normal moveout traveltime attribute of a prestack CDP gather. We focus on azimuthal AVO (AzAVO), which detects anisotropy from the amplitude variation of a particular event (PP or PS). Previous seismic models have predicted that shear...
Proceedings Papers

Paper presented at the 2018 SEG International Exposition and Annual Meeting, October 14–19, 2018
Paper Number: SEG-2018-2996445
... effective AVO inver- sion method to estimate horizontal P-wave velocity even for strong anisotropy, when full Zoeppritz solutions for PP reflec- tion are applied using far angle data, and theoretically derived why horizontal values are determined by the AVO inversion. In this paper, we expand Lim et al...

Product(s) added to cart

Close Modal