Estimation of Gas Reservoir Boundary by AVO Analysis

Alfian D. Santoso, L. Hendrajaya, F. Makhruf, Purwoko, S. Ardisasmita

Southeast Asia Petroleum Exploration Society (SEAPEX)

... to get a “real” amplitude. Applying a Consistent residual static Plotting the gradient (slope) of AVO attribute section. The result of this process...

Effects of Overburden Anisotropy and Vertically Aligned Fractures on P-Wave Azimuthal AVO Responses

Fatkhan, Yudi Yanto, Nofri Faruza Said

Indonesian Petroleum Association

... of the VTI overburden can change reflection responses of azimuthal AVO analysis? 2. What characteristics of azimuthal AVO gradient can be corresponded...

Did You Know That Rocks Have Memory?

Åsmund Drottning, Per Avseth, Tore Nordtømme Hansen, DIG Science

GEO ExPro Magazine

.... Finally, the seismic AVO signature is predicted by seismic modelling and can be displayed as intercept-gradient data. Seismic signatures are often shown...

Optimized characterization workflow for naturally fractured reservoirs using seismic anisotropy attributes in the Middle Magdalena Valley basin, Colombia

Oscar Moreno, Enrique Casaña, Luis Figuera, Iván Higuera, Diego García, Jorge Acosta, Benjamin Roure

International Meeting for Applied Geoscience and Energy (IMAGE)

... option involves the use of seismic anisotropy attributes derived from azimuthal variations of seismic velocity, AVO Gradient or Vp/Vs ratio. Assuming...

Investigation of Possible Shallow Gas Accumulations Associated with Pockmarks on the Otago Slope Southeast of New Zealand

Jasper Hoffmann, Andrew Gorman, Gareth Crutchley

Petroleum Exploration Society of Australia (PESA)

... the product of intercept (A) and gradient (B). Since the product is defined as (-A)*(-B)=+AB=(+A)*(+B), positive values highlight AVO Class 3 as well...

Illuminating Fine Scale Geology and Creating Robust Seismic Attributes Using High Trace Density Seismic Data in the Midland Basin

Andrew Lewis, Bruce Karr, Ron Bianco, Stonnie Pollock

Unconventional Resources Technology Conference (URTEC)

... on AVO attributes is shown by calculating intercept and gradient volumes and assessing the robustness of these attributes against well control. Finally...

Abstract: Reconnaissance Amplitude Versus Offset Techniques in the Niger Delta, by J. Barton and K. Gullette; #90951 (1996).

Search and Discovery.com

Abstract: Foz do Amazonas Basin: A Classical Example of Successful Application of AVO Technology, by A. C. B. Ramos, S. R. P. Silva, and S. O. Guimarães; #90933 (1998).

Search and Discovery.com

Acoustic Impedance Analysis as an Indirect Approach in Identifying Un-swept Oil Zone Case Study: Kais Carbonate Reservoir The Walio Field, Salawati Basin

Yulia Putri W, Eli Silalahi, Wah Adi Suseno, Ricky Sitinjak, Suganda Zahnurianto

Indonesian Petroleum Association

... was generated, the first attribute is used in this study, A*B which is the multiplication of intercept and gradient. The AVO response of Kais Carbonate...

Abstract: AVO Studies Over Bright Spot on an Offshore Oil and Gas Field of Eastern India, by S. N. Dalei, D. Chatterjee, and A. Dehadrai; #90933 (1998).

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Abstract: Quantitative Predication for Reservior Porosity via AVO; #90187 (2014)

Li Ang, Chen Shumin, Zhang Erhua, and Ju Linbo

Search and Discovery.com

... the saturation simulation results, with the increase of water saturation, the AVO curve type are for Class I, intercept (P) decreases slightly, while...

Abstract: An Effective Medium Model for a Fractured Carbonate Reservoir Undergoing CO2 Flood at Weyburn Field, Saskatchewan; #90174 (2014)

Chris Blackwood

Search and Discovery.com

... degrees (AVO intercept) as predicted by the Fatti equation is lower for the fractured medium than for the unfractured medium. This agrees with the assertion...

New Attribute Energy Weighted AVO (EAVO) Application on The Acacia Bagus Structure, Jatibarang Field, North West Java Basin

Alif Fikri Haikal, Agung Dwi Alfianto, Bayu Dwijatmiko, Eddy Hartantyo

Indonesian Petroleum Association

... is influenced by 2 factors, namely the value of G or gradient and R or intercept. Seismic backgrounds that have different G and R values will have...

Seismic Reservoir Characterization and Pre-stack Inversion in Resource Shale Plays, #41467 (2014),

Brian Russell

Search and Discovery.com

..., geology and geophysics. Summary of pre-stack inversion and AVO Pre-stack Inversion Methods Reflectivity (AVO) Near and Far Stack Intercept Gradient...

Using Seismic Inversion to Predict Geomechanical Well Behavior: A Case Study From the Permian Basin

Simon S. Payne, Jerry Meyer

Unconventional Resources Technology Conference (URTEC)

... median filtering, spectral balancing, partial angle stacking, spatial amplitude balancing and AVO scaling analysis. AVO intercept and gradient...

Identification of Shallow Gas Prospect Zone by Seismic Attribute and Amplitude Variation with Offset (AVO) Case Study: Namamu Field, Asri Basin

Zuhrotul Firdaus, Dwandari Ralanarko, Pranowo Nugroho, Alamsyah M. Juwono

Indonesian Petroleum Association

..., intercept (P), gradient (G), and product (P*G) volumes. Despite TAF reservoir as main reservoir target, the indication of marginal resources was seen...

Seismic Anisotropy VTI Modeling and Mechanical Properties of Kerogen in Gas Shale, #42486 (2020).

Anggoro S. Dradjat, Agus Djamil, M. Firwan Aprizal

Search and Discovery.com

... Isotropy Method (AVO VTI). Based on our modeling result we are recommending to proposed intercept and gradient method from 3D Seismic Data for predicting...

Extended Abstract: Managing “Big Data” and Finding the “Sweet Spots”: Principal Component Analysis and Neural Analysis of Seismic Attributes to the Rescue

Deborah King Sacrey

Houston Geological Society Bulletin

... (Sweetness, Relative Acoustic Impedance), AVO (Fluid Factor, Intercept Gradient), Spectral Decomposition (Envelope-based or Wavelet-Based) and Inversion...

Abstract: Azimuthal Fourier Coefficients: A Simple Method to Estimate Fracture Parameters; #90174 (2014)

Jon Downton and Benjamin Roure

Search and Discovery.com

...) where  represents the source to receiver azimuth, θ is the average angle of incidence, A is the intercept, Biso is the isotropic gradient, Bani...

Fracture Definition by Surface Seismic at the Bluebell-Altamont Field, Uinta Basin, Utah

Norman Harthill, C. Richard Bates, Heloise B. Lynn, K. Michelle Simon

Rocky Mountain Association of Geologists

...: 240.5 180.5 LINE 2 1200 Shade= (AVO Gradient + Intercept)/2 Shear wave Anisotropy at' Well G , Line 2 Wiggle Trace = Near Offset Stack FIGURE 7...

Applications of Kirchhoff Least-Squares Migration: Towards Reservoir Imaging; #42183 (2018)

Francesco Perrone, Graham Roberts, Lorenzo Casasanta, Andrew Ratcliffe, Arash Jafargandomi, Karen Purcell

Search and Discovery.com

... reflectivity or AVO. Figure 4 shows the AVO intercept vs. gradient cross-plot obtained from standard and least squares migration for the portion of Figure 1...

Seismic Detection of Source Rocks

Ian Davison, Karyna Rodriguez, David Eastwell

GEO ExPro Magazine

... 400 4000 3985 3970 3956 200 Gradient Figure 4: AVO analysis of the source rock reflector and ‘background’ shale reflectors using the Hampson-Russell...

Well-Log Conditioning and Rock Physics Modeling: A First Step in Seismic Reservoir Characterization

Mayesta O. Gunarto, Bambang Irawan

Indonesian Petroleum Association

... as sw decreases. In the intercept (A)-gradient (B) crossplot, the gradient of top sand also increases indicating a class-2/3 AVO anomaly. Figure 16...

Seismic Interpretation Methodology for Fluvial Sandstone Reservoirs in Widuri Field, Offshore Southeast Sumatra, Indonesia

D. C. Carter, W. E. Harmony, L. Harvidya, G. Juniarto, S. Lestari, A. Purba

Indonesian Petroleum Association

... form of the Zoeppriz equation, the AVO gradient (G) and intercept (P) describe these variations. P & G combine to give a stack at a particular angle...

Petrophysics and Rock Physics Modeling to Improve Seismic Reservoir Characterization „ Case Study of Lower Hackberry Sandstone; #40774 (2011)

Robert Y. Hu, Ted Holden, and Mary Broussard

Search and Discovery.com

... in the absence of gathers Predict AVO response: reflectivity intercept and slope are not very sensitive to fluid type. 12 12 AVO Attributes in Half-Space...