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The AAPG/Datapages Combined Publications Database

Showing 19,696 Results. Searched 195,452 documents.

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Ascending

Depth Imaging „ Seeing the Invisible

Vetle Vinje

GEO ExPro Magazine

... in the model. A numerical solution of the acoustic wave equation is used in Reverse Time Migration and One-way Wave Equation Migration, while...

2010

Fracture-Porosity Identification from Anisotropy AVO and Fluid Substitution Modelling in Seismic 2D Data

Septian Prahastudhi, Tenny Octaviani, Ayi Syaeful Bahri, Yulia Putri Wulandari

Indonesian Petroleum Association

...-wave and s-wave velocity in the dry and wet condition, fracture properties (D) can be found. Thomson parameters obtained from an empirical equation...

2012

Quantitative Petrophysical AVO Error Analysis in a Layered Model

Search and Discovery.com

... for top of layer 6 layers (Table 1). Plane wave denotes the same reflectivities calculated from Zoeppritz equation as in Figure 1. Figure 4: Scaled...

2013

Abstract: Finite-difference Elastic Modelling Below a Structured Free Surface; #90171 (2013)

P. M. Manning

Search and Discovery.com

... are (from Levander, 1988) ∂U ∂U x ⎛ ∂U z ∂U x ⎞ + =0 ⎟ = 0, σ zz = (λ + 2μ ) z + λ ∂z ⎠ ∂z ∂x ⎝ ∂x σ xz = μ ⎜ , with the left equation applying...

2013

TTI Wave-equation Migration of A 3-D Canadian Foothills Dataset

Search and Discovery.com

...TTI Wave-equation Migration of A 3-D Canadian Foothills Dataset TTI Wave-equation Migration of A 3-D Canadian Foothills Dataset Richard Bale...

2013

Abstract: Intrinsic and Apparent Seismic Attenuation in VSP Data; #90211 (2015)

Arnim Haase and Robert Stewart

Search and Discovery.com

..., the stratigraphic Q caused by reverberations between layer interfaces, and a gain component. When comparing results from a 1D wave equation model...

2015

Abstract: Near-Surface Velocity Estimation Using Source-Domain Full Traveltime Inversion and Waveform Inversion; #90319 (2018)

Lu Liu, Bowen Guo, Yi Luo

Search and Discovery.com

... limitaions of ray theory and avoid manual picking, we propose to use wave-equation-based source-domain full traveltime inversion (FTI). This method...

2018

Abstract: Modelling Near-field Effects in VSP-based Q-estimation Part 1: Theoretical Developments; #90171 (2013)

Arnim B. Haase and Robert R. Stewart

Search and Discovery.com

... wave lengths” when describing the far-field distance from a point source. They give an equation for the P-wave potential caused by a point source (Weyl...

2013

Correlation of seismic velocity and mechanical properties of metasandstone from CTW-1 well, Seri Iskandar, Perak, Malaysia

Norsyafiqah Salimun, Abdul Ghani Rafek, Khairul Arifin Mohd. Noh

Geological Society of Malaysia (GSM)

... equation: Velocity = d x t-1 (1) Where, d is the height of the core sample and t is the first (peak) arrival time of the wave. The P-wave velocity...

2019

Fast viscoacoustic forward modeling method based on U-net Fourier neural operator

Wenbin Tian, Yang Liu

International Meeting for Applied Geoscience and Energy (IMAGE)

... fractional visco-acoustic wave equation. Diverging from FNO, U-FNO incorporates an additional U-Fourier layer after the conventional Fourier layer...

2023

Abstracts: Plane Wave Reflection and Transmission Coefficients for VTI Media; #90173 (2015)

Ritesh Kumar Sharma and Robert James Ferguson

Search and Discovery.com

... (Tsvankin, 2001). For VTI media the wave equation separates into a coupled pair of the equations for the P-SV waves and into a single equation for the pure...

2015

Oscillation Ripples: DISCUSSION

Cyril Galvin

Journal of Sedimentary Research (SEPM)

...------------------------ MOGRIDGE, G. R., AND KAMPHUIS, J. W., 1973, Experiments on bed form generation by wave action: Proc. 13th Conf. Coastal Engr., p...

1981

Recent Developments in Marine Acquisition and Data Processing Technology to Improve Imaging through Complex Overburdens

Timothy Bunting, Jerry Kapoor, Nick Moldoveanu, Jeremy Browett

GCAGS Transactions

... overburdens and adoption of the full two way wave equation and use of complex earth models for imaging. The combination of these technologies has...

2011

Relative Quantities of Suspension Versus Bed-Load Transport on Beaches

Paul D. Komar

Journal of Sedimentary Research (SEPM)

... (1953b), Caldwell (1956) and Komar and Inman (1970) relating the total sand transport rate to the wave conditions. Equation (3) provides us with an FIG...

1978

Influences of Pore Fluid to Parigi Carbonates Seismic Parameter: A Carbonates Seismic Rock Physics Study

Bagus Endar B. Nurhandoko, John Adler, Usep Mohamad Ishaq, Erwin Riyanto, Mahatman L. Budi, Eko Bambang Supriyanto, Susilowati

Indonesian Petroleum Association

... can be write as : ρ B = (1 − φ) ⋅ ρ m + φ ⋅ ρ f (4) where ρm is matrix density and ρf is fluid density. From equation 2, P-wave velocity can write...

2007

Abstract: Multi-Scale 2D Acoustic Full Waveform Inversion with High Frequency Impulsive Source; #90187 (2014)

Vladimir N. Zubov, Michael P. Lamoureux, and Gary F. Margrave

Search and Discovery.com

...) is examined in the present study, using synthetic data for the acoustic wave equation problem with boundary. Different frequency impulsive sources...

2014

Stepwise Regression in the Earth Sciences: A Coastal Processes Example

James H. Balsillie, William F. Tanner

Environmental Geosciences (DEG)

... included bed slope, wave steepness considerations, the surf similarity parameter, and other parameters in endeavors to “refine” predictive power...

1999

Impact of Shear Velocity Estimation on Wellbore Stability, #42351 (2019).

Charles Otoghile, Chima Cyril Udeze

Search and Discovery.com

... analyzed using Greenberg and Castagna and Mudrock line equations. The aim is to determine how reliable the Greenberg and Castagna equation...

2019

Frequency-dependent reflection characteristics of single thin layer and waveform inversion

Zhengyang Kuai, Danping Cao, Chao Jin

International Meeting for Applied Geoscience and Energy (IMAGE)

... obtained from the propagation matrix and eigenvector matrix: (1) Q=D-1 D2 E2 D-1 D3 1 2 QUU QUD (2) Q z1 ,z2 = QDU QDD Q in Equation 1 is the wave...

2023

Correlation of seismic velocity and density of metasandstone from Kati Formation, Seri Iskandar, Perak, Malaysia

Norsyafiqah Salimun, Abdul Ghani Rafek, Khairul Arifin Mohd. Noh

Geological Society of Malaysia (GSM)

... velocity measured and tabulated in Table 1. The wave velocity calculated using the following equation: Velocity = d x t-1 ----------------------- (1...

2018

Estimation of Gas Reservoir Boundary by AVO Analysis

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

Southeast Asia Petroleum Exploration Society (SEAPEX)

... equation in order to clarify the relationship between reflection coefficient the incident angle of P wave. The equation is written as follows (Verm...

1996

Viscoelastic anisotropic seismic wave modeling using recursive convolution method and curvilinear collocated finite difference method for different boundaries

Chao Jin, Bing Zhou

International Meeting for Applied Geoscience and Energy (IMAGE)

..., UAE Summary We proposed a generalized viscoelastic anisotropic wave equation based on the General Maxwell Body, which can accommodate various medium...

2023

Abstract: Joint PP and PS AVO Inversion Based on Zeopprtiz Equations; #90171 (2013)

Tiansheng Chen and Xiucheng Wei

Search and Discovery.com

... to the linearized approximations of PP and PS is first order equation of Taylor series, so equation 4 can be generalized to: b b y = a pp x pp + c pp (PP wave...

2013

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