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The AAPG/Datapages Combined Publications Database
Showing 2,560 Results. Searched 200,357 documents.
Extended Abstract: Exploring the Missing Blind Zone in the Gulf of Mexico Shelf
Selim Simon Shaker, Dave Reynolds, Walter W. Wornardt
GCAGS Transactions
... Vol. 65 (2015) Box. R., and E. Doss, 2008, Typical AVO response as a function of depth and fluid pressure gradient, Gulf of Mexico shelf: The Leading...
2015
Prestack inversion and amplitude variation with offset attributes as hydrocarbon indicators in carbonate rocks: A case study from the Illinois Basin
Jacob T. Murchek, Paul McColgan, Lindell C. Bridges, Ernest C. Hauser, and Doyle R. Watts
AAPG Bulletin
... attributes, such as intercept and gradient (slope), reduce AVO information into a more readily interpretable form (Chopra and Castagna, 2014), which...
2023
Identification of Shallow Gas Potential by Seismic Attribute and Amplitude Versus Offset (AVO). A Case Study: Tunu, Mahakam Block Area
Ririn Irmaningsih, Ihda Arija Alfi Husna
Indonesian Petroleum Association
... the shallow zone. The specific analysis used are attribute amplitude and AVO classified by intercept with gradient curve. The result is Tunu has a gas...
2016
Rock Physics and Reservoir Characteristic of a Calcitic-Dolomitic Sandstone Reservoir
H. Morris, B. Hardy, E. Efthymiou, T. Kearney
Indonesian Petroleum Association
.... However many legacy AVO datasets still have this subtle but important problem. Undertaking any Intercept (I) and Gradient (G) analysis...
2011
ABSTRACT: Fracture Characterization in the Georgetown Formation (Central Texas) with AVO; #90013 (2003)
Robin Pearson, Bryan DeVault, Sri (Sam) Kulkarni, Jeff Copley
Search and Discovery.com
... fracture signature is most apparent on the azimuthal AVO gradient term. Armed with this new insight, the 3-D seismic data were revisited and reprocessed...
2003
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
... and gradient that indicates the AVO anomaly. By calibration of this AVO anomaly with both the gamma ray log and top pay of gas well, we can notice...
2019
Frequency Gradient of Spectral Decomposition for Identifying Hydrocarbon Reservoir Example from Indonesian Field
Abdul Haris, Ahsanul Khair
Indonesian Petroleum Association
... reservoir, the resulted low frequency shadow zone is consistent with AVO attribute such as product of AVO’s intercept and gradient. However, the conventional...
2012
Fluid and Petrophysical Prediction in the Elastic Impedance Domain Using Neural Network Technique; #41066 (2012)
M. Hermana, M. Najmi, Z.Z.T. Harith, and C.W. Sum
Search and Discovery.com
...() = A + B sin2 (1) where A and B are the intercept and gradient in 2-term AVO. By changing sin2 with tan, the equation would be: R() = A + B tan (2...
2012
Seismic Avo Attributes and Machine Learning Technique to Characterize A Distributed Carbonate Build Up Deposit System in Salawati Basin Eastern Indonesia
Yudistira Effendi, Edi Suwandi Utoro, Sri Lestari, Lilik T. Hardanto
Indonesian Petroleum Association
... in amplitude of a seismic reflection with varying offset. These attributes include: AVO intercept, AVO gradient, intercept multiplied by gradient, far...
2022
Geological Interpretation Using Pattern Recognition from Self-Organizing Maps and Principal Component Analysis
Search and Discovery.com
N/A
Abstract: Mining Big Data Using Principal Component Analysis and Using Results to Find Oil and Gas with Neural Analysis of Multiple Seismic Attributes Machine Learning!; #90304 (2017)
Deborah Sacrey
Search and Discovery.com
... (sweetness, relative acoustic impedance, average energy), AVO (fluid factor, intercept gradient), spectral decomposition (either envelope based...
2017
Rock Physics and Reservoir Characterization of a Calcitic-Dolomitic Sandstone Reservoir; #41499 (2014)
H. Morris, E. Efthymiou, B. Hardy, T. Kearney
Search and Discovery.com
... the partial stacks are used to create intercept and gradient reflectivity that it becomes evident. Figure 6 and Figure 7 show the resulting intercept...
2014
Understanding Attributes and Their Use in the Application of Neural Analysis Case Histories Both Conventional and Unconventional, #41473 (2014).
Deborah Sacrey, Rocky Roden
Search and Discovery.com
... are derived from intercept and gradient values or equivalents. They are employed to interpret pore fluid and/or lithology. Intercept (A) Gradient (B...
2014
Gas Reservoir Delineation of Pantai Pakam Timur Field, North Sumatra, Indonesia
D. Tangkalalo, M. Farid Ma'ruf, Ambar Sudiono, Widjiono
Indonesian Petroleum Association
... Corner, 1997): Where : R = Reflection coefficient θ = Incident angle A = AVO intercept B = AVO gradient AVO evaluation of Pantai Pakam...
1999
Spatially varying Chi volumes: A study in offshore Australia on background trend calculation from the Shuey two-term approximation
Hayden Powers, Noah R. Vento
International Meeting for Applied Geoscience and Energy (IMAGE)
... background trend of AVO Intercept and Gradient data (A and B), using a 3D seismic dataset from offshore Australia. We use Shuey’s two-term approximation...
2023
Abstract: Determination of AVO Attributes for Hydrocarbon Resources Region of Malay Basin: The Fluid Factors (Geophysics Paper 4)
T. L. Goh, Uzir Alimat, Shaidin Arshad, M. Izzuljad Ahmad Fuad
Geological Society of Malaysia (GSM)
... of A and B were 52 the intercept and the gradient attribute of reflection amplitude versus sin2Δ plot. Castagna and Smith (1994) reported...
2011
Fluid Prediction from 3-D Seismic Data in Deepwater Sandstone Reservoirs: Applications from Cocuite Gas Field, Veracruz Basin, Southeastern Mexico
Fouad, Khaled, Jennette, David C., Soto-Cuervo, Arturo
GCAGS Transactions
..., p. 1849-1855. Castagna, J.P., H.W. Swan and D.J. Foster, 1998, Framework for AVO gradient and intercept interpretation: Geophysics, 63, no. 3, p...
2002
Rock Physics Study of Coal Bed Methane Reservoir Rock: Case Study of Muaraenim Coal
Bagus Endar B. Nurhandoko, Susilowati, Usep M. Ishaq, Hussein Rudiyanto, Y. Wiyanto, Budi Sulistyanto, Mahatman L. Budi, Kaswandhi Triyoso, KiskoRiondo Siahaan, Wahyu E. Abdillah, Danang Kusudiharjo
Indonesian Petroleum Association
... saturation tends to the class III, or tends to shift into lower gradient and intercept than brine saturated coal. These phenomena show that the AVO effect...
2012
Learning from 40 Years Experience: Risking Seismic Amplitude Anomaly Prospects; #110139 (2010)
Mike Forrest
Search and Discovery.com
.... 5. 6. 7. 8. 9. Edge Effects Rock Physics Primary AVO Effects AVO Attribute Cross-plots (Intercept vs. Gradient) Pitfalls Vertical and Lateral...
2010
AVO Responses: The Good, the Bad and the Evil
Per Avseth
GEO ExPro Magazine
... is to make crossplots of the zero-offset reflectivity (R0) versus the AVO gradient (G). These attributes are estimated from pre-stack seismic gathers...
2005
Shallow Gas in Asribasin: Drilling Hazard or Future Potential?
Dwandari Ralanarko, Wahyu Seno Aji, Heri Gunawan, Rifqi Lubban Jauhari, Julius Sunarta, Pranowo Nugroho
Indonesian Petroleum Association
... type III of AVO anomaly (Rutherford, 1989) with negative value of intercept (≈ -0.1), negative value of gradient, and positive value of product (P*G...
2012
Geophysical Characterization of Carbonate Reservoirs Using Advanced Interpretation Techniques: Applications to Abenaki Formation, Penobscot Block, Nova Scotia; #42083 (2017)
D. Coronel, E. Villamizar, E. Illidge, S. Khurama
Search and Discovery.com
.... Figure 15 shows the gradient-intercept crossplot made for the Abenaki limestones. Based on the analysis of AVO attributes and the expected behavior...
2017
Amplitude Versus Offset (AVO) Analysis: Part 7. Geophysical Methods
Allan T. Long, R. C. Anderson
AAPG Special Volumes
... to yield an amplitude versus offset gradient section. The gradient section can then be interpreted, and AVO anomalies can be correlated to the stack...
1992