Seismic Modelling in 3D for Migration Testing

Search and Discovery.com

...-Interscience, ISBN-10: 0-471-23816-3, 413 pages. Gazdag, J., 1981, Modeling of the acoustic wave equation with transform methods: Geophysics, 46...

A new technology for the characterization of microfractured reservoirs (test case: Unayzah reservoir, Wudayhi field, Saudi Arabia)

Mohammed S. Ameen, Ernest A. Hailwood

AAPG Bulletin

..., borehole images, full-wave sonic logs, and vertical seismic profile (VSP) logs offers comprehensive characterization and considerably reduces...

Wave Energy Generators as a Viable Alternative for Offshore Platform Decommissioning and Energy Recovery

Mohamad Yafi Zachary

Indonesian Petroleum Association

... (T). The equation for wave energy potential came from the general equation of wave train energy, E=ρgH2, where ρ is the density of the water and H is the wave...

The Threshold of Grain Motion Under Oscillatory Flow in a Laboratory Wave Channel

John R. Dingler

Journal of Sedimentary Research (SEPM)

... is the fluid density, g is the acceleration of gravity, and do is the near-bottom orbital diameter. The equation um = d0/T, (2) where T is the wave...

Abstract: Multi-component or Vector Dip Filtering Using the S-transform; #90187 (2014)

Kristof De Meersman and Majda Mihoub

Search and Discovery.com

... the dominant local (in time, frequency and spatial coordinates) polarization and dip properties in multi-component seismic data. We then adapt this method...

Geotechnical Applications in Soft Sediments: Section 2

Wayne A. Dunlap

AAPG Special Volumes

.... and P. Arnold (1973). Movements and Forces Developed by Wave-induced Slides in Soft Clays, Proceedings, 5th. Offshore Technology Conference, Houston...

Geological Factors Influencing Porosity Estimates From Velocity Logs

Roberto Sarmiento

AAPG Bulletin

... the variables mentioned. The resulting equations give more accurate porosity estimates than the time-average equation, which is in widespread use...

Prediction of Reservoir Rock Permeability Reduction by Using Laboratory Acoustic Measurement

Bambang Widarsono, Fakhriyadi Saptono

Indonesian Petroleum Association

... was taken as minimum below which difficulties were encountered in picking P-wave and S-wave first arrivals). Results of calculation using Equation 10 testify...

-- no title --

Ehsan, Athar

Search and Discovery.com

... are the position in the regular-grid coordinates. We obtained the second derivative of the modified acoustic wave equation incorporating the variable...

Abstract: 3D Time Domain Full Waveform Inversion Based on Multiscale Adapted Variable Grid Method Case Study Majunga Basin East African Coast; #91204 (2023)

Mukiibi Ssewannyaga Ivan, Jian-Ping Huang, Zi-Ying Wang, Jidong Yang, Jin Keji

Search and Discovery.com

... grids results into inaccurate solution of the wave equation; also it results into redundancy mainly in the deep high velocity zones resulting...

Abstract: Two Prestack Anisotropic Depth Migration Methods for Tilted TI Media; #90211 (2015)

Xiang Du, John Bancroft, Don Lawton, and Larry Lines

Search and Discovery.com

... continuation methods that use one-way wave equation to extrapolate wavefields, while ART is a full wave equation method. We focus our research...

The effects of marine currents on seismic data

Gary Hampson

International Meeting for Applied Geoscience and Energy (IMAGE)

... propagation across the water layer. One choice is to use the 1-way wave equation to depth extrapolate the time dependent wavefield through the water...

Imaging in Complex Environments … Common Reflection Angle Migration

Graham A. Winbow

Indonesian Petroleum Association

... from the form of a typical velocity model. Thus more computationally intensive approaches such as Wave Equation Migration are not necessarily required...

ABSTRACT: Time Extrapolation of the Double-Square-Root Equation: Prestack Exploding Reflector Modeling and Migration, by Alkhalifah, Tariq A.; Fomel, Sergey; #90141 (2012)

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Permeability prediction in chalks

M. Monzurul Alam, Ida Lykke Fabricius, Manika Prasad

AAPG Bulletin

... permeability and porosity from core data were first examined using Kozeny's equation. The data were analyzed for any correlations to the specific surface...

Acoustic waveform inversion with the Lippmann-Schwinger equation constraint

Rahul Sarkar, Biondo Biondi

International Meeting for Applied Geoscience and Energy (IMAGE)

... the Helmholtz equation 2 2 in Rd+1 = {(x, z) : x ∈ Rd , z ∈ R}, for d = 1, 2 (here x, z denotes horizontal and vertical coordinates respectively) ω2 ∆+ u = f...

Frequency-dependent seismic anomalies resulting from anisotropic permeabilities in hydrocarbon-bearing fractured porous rocks

Xuehua Chen, Xiaomin Jiang, Shengyi Wang

International Meeting for Applied Geoscience and Energy (IMAGE)

... the understanding of seismic wave anomalies in actual fractured reservoirs under cases of anisotropic permeabilities. It can be beneficial for permeability...

Acoustic modelling with elastic AVA effects

Robin P. Fletcher, James Hobro, James Rickett

International Meeting for Applied Geoscience and Energy (IMAGE)

...-free shear wave propagation. In this paper we propose a new acoustic wave equation, derived using linearized plane-wave reflection coefficient theory...

Armored Mud Balls from Cabretta and Sapelo Barrier Islands, Georgia

Anne Marie Hall, William J. Fritz

Journal of Sedimentary Research (SEPM)

... on the gently sloping beach flattens the core and concentrates armor on opposing sides. No evenly armored, very highly spherical mud halls, common...

Acoustic Properties of "Young" Carbonate Rocks, Odp Leg 166 and Boreholes Clino and Unda, Western Great Bahama Bank

J.A.M. Kenter, F.S. Anselmetti, P.H. Kramer, H. Westphal,, M.G.M. Vandamme

Journal of Sedimentary Research (SEPM)

... cemented to uncemented and compacted background sediments have velocities that, at a given porosity, fall below the time-average equation for calcite...

Field Experiments on Vertical Mixing of Sand in the Surf Zone

Nicholas C. Kraus

Journal of Sedimentary Research (SEPM)

... to account for breaker type or grain size (King 1951). The above relation holds for moderate wave conditions; it is not obvious that Equation 5...

Investigation of Micro-Seismicity and Permeability Evolution in Shale Fractures During Stimulation

Zhi Ye, Ahmad Ghassemi

Unconventional Resources Technology Conference (URTEC)

... extensively studied in laboratory tests under relevant conditions. In this work, a cylindrical Eagle Ford shale sample having a single fracture...

Depths of Modern Coastal Sand Clinoforms

Neil C. Mitchell, Gerhard Masselink, John M. Huthnance, Luis M. Fernandez-Salas, Francisco J. Lobo

Journal of Sedimentary Research (SEPM)

... L is the wavelength calculated using the linear wave dispersion equation: Shoaling effects on Hs were ignored given that the rollovers...

The calculation of first-arrival P-wave traveltime for attenuating TTI media

Mengxiu Wang, Jingyi Chen, Zhengcong Zhao, Kaiyuan Ji, Shaoying Chang

International Meeting for Applied Geoscience and Energy (IMAGE)

... wave traveltime in the visco-acoustic medium is generally complex-valued and is governed by the complex eikonal equation (Červený, 2005). The real...

Abstracts: CO2 Rock Physics: A Laboratory Study; #90173 (2015)

Helen Yam and Douglas R. Schmitt

Search and Discovery.com

... kilometer of most sedimentary basin. P- and S-wave velocities and differential attenuation coefficients were determined from the laboratory data...