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The AAPG/Datapages Combined Publications Database
Showing 2,356 Results. Searched 195,364 documents.
Acoustic modelling with elastic AVA effects
Robin P. Fletcher, James Hobro, James Rickett
International Meeting for Applied Geoscience and Energy (IMAGE)
...) and running acoustic FWI multiple times. The resulting images can then be used for subsequent conventional amplitude-versus-offset/angle (AVO/AVA) analysis...
2023
Impact of Velocity Field on AVA Analysis; #42363 (2019)
Ritesh Kumar Sharma, Satinder Chopra
Search and Discovery.com
... authentic. Such a more realistic interval velocity field, when used in the AVA analysis, exhibits significant differences in the gradient attribute...
2019
Seismic Anisotropic Fracture Characterization using Azimuthal Amplitude versus Angle (AVAZ) Combined with Azimuthal Frequency versus Angle (FVAZ)
Salah El Din R Mahmoud, Hassan Al-Marzooqi, Maryam Alqaydi, Amna Alharthi, Muhammad Z. Baig, Abdulla A. Al-Hashmi
Unconventional Resources Technology Conference (URTEC)
... to calculate AVO gradient rather than near versus far offset observations. 5. Sub-seismic fracture identification is more effective by calculating gradient...
2022
Sparse Layer Inversion for Prestack Seismic Reservoir Characterization
Raisya Noor Pertiwi, Muhammad Alwi, Herlan Setiadi, Khairul Ummah
Indonesian Petroleum Association
... reflectivity. In order to test this idea, we examine the AVO/AVA, intercept and gradient value around the well along the top and bottom of main target...
2016
Abstract: AVO and Anisotropy from Logs and Walkaways, by S. W. Leaney and W. E. Borland; #90982 (1994).
Search and Discovery.com
1994
Abstract: Effects of Lateral Heterogeniety Scales on AVO Trends; #90174 (2014)
Ramin Saleh, Emmanuel Bongajum, and Bernd Milkereit
Search and Discovery.com
... with offset/angle (AVO/AVA) depend on changes in the P-wave velocity(Vp), S-wave velocity (Vs), density and Poisson's ratio at a plane interface...
2014
Integrated Work-Flow for Reservoir Characterisation
Nguyen Nam
Petroleum Exploration Society of Australia (PESA)
... the assumption area of the amp li tude increases versus offset of fluid contacts makes sense. The next step is (AVO class-3- oil and gas cases) limits...
2010
Reservoir Characterization of a Basin Floor Fan System Using Rock Physics to Integrate Seismic Amplitude and Well Data, Offshore Block 9, South Africa, #42350 (2019).
Mduduzi M. Mmema, Jorge I. Adrian,
Search and Discovery.com
... -AR2 Seismic Gather -40Ø_Oil InSitu +15Ø_Oil +15Ø_Wet Angles II Gradient (B) -40Ø_Gas Amplitude AVA (Amplitude-vs-Angles) I AVO Cross-plot (A-B...
2019
Monitoring CO2 Injection at Weyburn Reservoir Using 3-D/3-C Seismic Datasets; #20290 (2015)
Le Gao, Igor Morozov
Search and Discovery.com
... 3-D/3-C seismic datasets. Standard AVO attributes, such as intercept, gradient, S-wave reflectivity, together with additional empirical attributes...
2015
Abstract: AVO Compliant Spectral Balancing; #90171 (2013)
Nirupama Nagarajappa and Jon Downton
Search and Discovery.com
... the amplitude versus offset relationship introducing systematic error into subsequent AVO analysis. Further, spectral balancing is often performed after NMO...
2013
Benefits and uplift of focused post-migration gather conditioning over prospect specific areas - An Indonesian case study
David Jessup, Dave Goulding, Andy Kalil
Southeast Asia Petroleum Exploration Society (SEAPEX)
... at target level are misaligned on the raw migrated angle stacks (angle stacks centered at 11°, 23.5°, 36° and 48.5°), with the resulting AVA gradient...
2022
Abstract: Principles of AVO Crossplotting, by J. P. Castagna and H. W. Swan; #90944 (1997).
Search and Discovery.com
1997
Gabon: Staying Ahead of the Herd in the Ultra-Deep Waters
Jake Berryman, Gregor Duval, CGG
GEO ExPro Magazine
... km) Gabon South Basin 3D BroadSeis (25,168 km2) Insert on main foldout line: AVO gradient intercept plot. BSR SW NE 5 6 Albian/Turonian...
2020
EXTENDED ABSTRACT: Applications of Wave Imaging Technologies to Improve Deep Gulf Prospecting
Morgan P. Brown, Joseph H. Higginbotham, Cosmin Macesanu, Oscar E. Ramirez
GCAGS Transactions
..., and the associated velocity anomalies hamper seismic prospecting on PSTM images in two ways. The best known effect is the “time sag.” The second, more...
2010
Abstract: AVO Crossplotting II: Examining Vp/Vs Behavior; #90171 (2013)
Heath Pelletier
Search and Discovery.com
... follow-up article. Figure 1c shows the rotation of the intercept/gradient slope when a linear Vp versus Vs trend is taken into account in the creation...
2013
Identification of Hydrocarbon Reservoirs from Seismic Gathers AVO Analysis in the Offshore Niger Delta, by A. Adekanle; #90037 (2005)
Search and Discovery.com
2005
AVO Response for Gas Sands of the Monserrate Formation, Upper Magdalena Valley of Colombia
C.J. Dueñas, M. G. de Freitas, A. Mantilla
Asociación Colombiana de Geólogos y Geofisicos del Petróleo (ACGGP)
... gradient. A useful way to interpret AVO attributes is to make cross-plots of intercept (A) versus gradient (B). These plots are an intuitive way...
2006
Induced AVO Anomalies from Pore Pressure Effects
A.C. Buginga Ramos, M.A. Santiago Toledo
Asociación Colombiana de Geólogos y Geofisicos del Petróleo (ACGGP)
...) in the crossplots of AVO intercept versus gradient for each significant interface of the well. These interfaces correspond to shale/sand and sand...
2006
EXTENDED ABSTRACT: Conforming and Non-Conforming Sands - An Organizing Framework for Seismic Rock Properties
Young, Roger A. and LoPiccolo, Robert D.
GCAGS Transactions
..., Robert D. 2004 Volume 54 (2004) A new classification for AVO (amplitude versus offset) has been proposed to include all possible combinations of near...
2004
Integrated Workflow for the Reservoir Properties Prediction using the Ultra-Far Seismic Data, Mansoura Area, Onshore Nile Delta, Egypt, #42325 (2019).
Walaa Fathy, Asghar Shams,
Search and Discovery.com
..., 2) perform the gathers conditioning, and 3) monitor the AVA response in the study area. We decided to apply AVO simultaneous inversion and we...
2019
3-D seismic Data in Delineating Productive Ismay Algal Mounds in Southern Paradox Basin, Utah, By, R.O. Louden, D.D. Lehman, W.E. Johnson and D.L. Edwards, Search and Discovery Article #40048 (2002)
Search and Discovery.com
2002
Principles of AVO Crossplotting [Abstract]
John P. Castagna, Herbert W. Swan
Oklahoma City Geological Society
... or decreasing AVO. Amplitude-versus-offset interpretation is facilitated by crossplotting AVO intercept (A) and gradient (B). Under a variety...
1997
Fast Track Reservoir Characterisation of a Subtle Paleocene Deep Marine Turbidite Field Using a Rock Physics and Seismic Modelling Led Workflow
H.J.S. Morris, R. Christensen, D. Gawith, M. Millwood-Hargrave
Indonesian Petroleum Association
..., whilst shear velocity remains relatively constant. The first set of synthetics show the AVA gathers for the initial hydrocarbon filled scenario...
2008
AVO Analysis and Simultaneous Inversion of Spec Survey Data in Arafura Sea
Feby Hapsari, Irfan Saputra, John Coffin, Liyanto
Indonesian Petroleum Association
... and unconventional) is required for successful exploration. The AVO response is dependent on the properties of P-wave velocity (Vp), S-wave velocity (Vs...
2008
Simultaneous inversion of velocity and angle-dependent reflectivity
Nizar Chemingui, Yang Yang, Jaime Ramos-Martinez, Guanghui Huang, Dan Whitmore, Sean Crawley, Elena Klochikhina, Sriram Arasanipalai
International Meeting for Applied Geoscience and Energy (IMAGE)
... reliable amplitude versus angle (AVA) analysis and quantitative interpretation (QI). Introduction Seismic attributes play a crucial role in hydrocarbon...
2023