Determining Seismic Stratigraphic Features Using Dip-Guided Symmetry Attribute

Search and Discovery.com

ABSTRACT Factors Behind Variation in Geomechanical Properties of a Highly Lithified Quartzose Sandstone, #90104 (2010)

Gupta Nabanita; Abousleiman Younane; Slatt Roger

Search and Discovery.com

... and measurement is  also correlated with the acoustic measurement, in terms of compressional and shear wave velocities. A newly designed rock testing device...

Physics-informed full-waveform inversion using learned wavefield solutions

Xinquan Huang, Tariq Alkhalifah, Fu Wang

International Meeting for Applied Geoscience and Energy (IMAGE)

... this wavefield obeys the physical laws (wave equation) and matches the data on the surface, we achieve a significant reduction in noise and artifacts...

Mapping of Rock Property Changes in Space and Time Using Microseismic Data through Full-Waveform Inversion

Jyoti Behura

Unconventional Resources Technology Conference (URTEC)

... location is often determined using the traveltime difference between the P- and S-wave arrivals through the following equation: ts-tp = D (~Vs Vp...

Chalk porosity and sonic velocity versus burial depth: Influence of fluid pressure, hydrocarbons, and mineralogy

Ida L. Fabricius, Lars Gommesen, Anette Krogsboll, Dan Olsen

AAPG Bulletin

... effect differs between P-wave and shear velocity so that smectite-bearing chalk has a high Poisson's ratio in the water-saturated case, but a low...

Growth rates and carbonate production by coralline red algae in upwelling and non-upwelling settings along the Pacific coast of Panama

Priska Schäfer, Helena Fortunato, Beate Bader, Volker Liebetrau, Thorsten Bauch, John J.G. Reijmer

PALAIOS

... or a representative split ($100 components) was counted. Point count data (in percent) were transformed into weight percent (wt%) using the equation developed...

An Assessment and Calibration of Formulations for Bagnold's Bedload Equation

J. Hardisty

Journal of Sedimentary Research (SEPM)

...An Assessment and Calibration of Formulations for Bagnold's Bedload Equation J. Hardisty 1983 Vol. 53 No. 3. (September), Bagnold's bedload equation...

Application of Visco-Acoustic Full Waveform Inversion to Shallow-Water, Shallow-Gas Data, #41802 (2016).

Xin Cheng, Ronan Petton, Ian Anstey, Wai-Leong Lai, Denes Vigh, Gavin Menzel-Jones

Search and Discovery.com

.... In order to fully resolve the compartmentalized nature of the gas bodies, a wave equation-based method to derive the Earth model is required. Many current...

Well-Log-Based Assessment of Elastic Properties in Organic-Shale Formations

Alvaro Aranibar, Clotilde Chen Valdés, Zoya Heidari

Unconventional Resources Technology Conference (URTEC)

... constituents. Next, we performed tri-axial laboratory experiments at different stress levels to measure elastic properties and acoustic-wave velocities...

AVO Analysis for Direct Hydrocarbon Detection in Field X in the Persian Gulf (Paper 5)

Mohammad Ali Riahi, Mohammad Emami Niri

Geological Society of Malaysia (GSM)

... elastic properties to seismic reflections starts with the elastic wave equations given by Knott-Zeoppritz (1919). The equation relates the reflection...

A Study of the Geomechanic and Microseismic Responses of Different Rocks to the Injection of CO2: Implication for Carbon Sequestration

Blessed C.A. Amoah, Son T. Dang, Mark E. Curtis, Chandra S. Rai

Unconventional Resources Technology Conference (URTEC)

... and water. The tests were done on cylindrical samples with dimensions of 4” in diameter and 5.5” in length. Samples with different petrophysical and elastic...

Sequence-Stratigraphic, Petrophysical, and Multicomponent Seismic Analysis of a Shelf-Margin Reservoir: San Andres Formation (Permian), Vacuum Field, New Mexico, United States

Matthew J. Pranter, Neil F. Hurley, Thomas L. Davis

AAPG Special Volumes

.... Pore-throat radii from cored wells are used to modify the empirically derived Winland equation to estimate values of pore-throat radius in noncored...

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...

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...

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...

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...

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...

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...

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...

Least-squares reverse time migration for attenuating TTI media

Xinru Mu, Tariq Alkhalifah

International Meeting for Applied Geoscience and Energy (IMAGE)

... involves incorporating a regularization term into the wave equation (Fathalian et al., 2020). In addition, Wang et al. (2018) and Chen et al. (2020...

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...

Marine Sediments North of Scripps Submarine Canyon, La Jolla, California

C. Stanley Wimberley

Journal of Sedimentary Research (SEPM)

... with depth of water, represented by the following equation: Mud Percentage = 1.74 (Depth in fathoms) -1.93. A sharp change in mud percentage is found...

Gas Storage Capacity of Iljik and Hasandong Shales in Gyongsang Basin, South Korea

Seungmo Kang, Young Jae Shinn, I. Yucel, Akkutlu

Unconventional Resources Technology Conference (URTEC)

... volume, Vp; hence, its amount is predicted using an equation of state, such as n=PV p/ (zRT), and is dependent on average pore pressure P and temperature...

Abstract: Microgravity Investigation for Drilling Hazards in the Eastern Province of Saudi Arabia; #90319 (2018)

Gary W. McNeice, Daniele Colombo, Michael Jervis

Search and Discovery.com

... including microgravity, shallow resistivity, surface wave analysis and ground penetrating radar. Microgravity is appealing since it directly measures...

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...