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The AAPG/Datapages Combined Publications Database

Showing 2,115 Results. Searched 187,807 documents.

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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

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: 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

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

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

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

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

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

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

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

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

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

P-S Converted Wave AVO Analysis for Reservoir Characterization

Ehsan Sadeghi, Cepi Adam, Effendy Siawira, Hilfan Khairy

Indonesian Petroleum Association

... structural images compared to the conventional P-P data below the gas clouds; the AVO (Amplitude Versus Offset) characteristics of such P-S data is also...

2017

Abstract: Fit for Purpose Seismic Reservoir Characterisation (Geophysics Poster 9)

Troy Thompson, Matthew Lamont, Carlo Bevilacqua, Natasha Hendrick

Geological Society of Malaysia (GSM)

... in intercept-gradient space, however stack rotations can also be computed using near and far (angle stack) attributes. Near and far AVA attributes have both...

2011

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

Discriminating Gas Bearing Sands from Shale Using Rock Physics Guided Inversion, #40909 (2012)

Ahmed W. Daghistani, Aiman M. Bakhorji, Husam M. Al-Mustafa

Search and Discovery.com

... bearing sands and wet shale. Rock physics cross-plots between various elastic moduli showed that the Vp/Vs ratio versus acoustic impedance (AI) plane...

2012

3-D AVO Analysis and Modeling Applied to Fracture Detection in Coalbed Methane Reservoirs

Antonio C.B. Ramos, T.L. Davis

Rocky Mountain Association of Geologists

... affecting the AVO gradient in the same way (large A 0 correspond to large AVO gradients). The effect of changmg the velocity contrast 10 bin trace 40 20...

1997

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