Chapter 10: Earthquake, Tomographic, Seismic Reflection, and Gravity Evidence for a Shallowly Dipping Subduction Zone beneath the Caribbean Margin of Northwestern Colombia

Rocio Bernal-Olaya, Paul Mann, Carlos A. Vargas

AAPG Special Volumes

... in the mantle by detecting velocity variations between the brittle slabs and surrounding mantle. Previous studies using tomographic and earthquake relocation...

Specialized processing of a massive distributed acoustic sensing (DAS) 3D VSP in a producing well

Ali Sayed, Francesca Twynam, Ran Bachrach, Philippe Caprioli, Marcus Holloway, Qingsong Li, Reetam Biswas, Daniel Tebo, Sam Buist

International Meeting for Applied Geoscience and Energy (IMAGE)

... using a racetrack shooting pattern. Two source arrays of 5110 cu in. volume, positioned at a depth of 49.2 ft [15 m] below sea level, were shot...

Measuring Key Reservoir Properties for Shale and Tight Development

Xinghui Liu, Brent Kebert, Tohoko Tajima, Baosheng Liang, Lauren Devoe, Ramez Hanna Alla, Claire Lacobie, Yuguang Chen, Oscar Beltran, Hao Sun, Bolaji Sanni, Spencer Riebschlager, Leonardo Chaves, Neil Dilorenzo

Unconventional Resources Technology Conference (URTEC)

... is based on the straight-line behavior of pressure vs. specialized time function in pre- and after-closure linear flow. The analytical interpretation...

P- and S-Wave Velocity Structures of the Sigsbee Abyssal Plain of the Gulf of Mexico from Ocean Bottom Seismometer Data

Sangmyung D. Kim, Seiichi Nagihara, Yosio Nakamura

GCAGS Transactions

...-wave velocity model consisting of six principal layers (a water layer, three sedimentary layers, an igneous crust, and upper mantle), using a standard...

ABSTRACT: Using the Depth-Velocity-Size Diagram to Interpret Equilibrium Bed Configurations in River Flows, by John B. Southard; #91003 (1990).

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Abstract: Anisotropic Moment Tensor Inversion and Visualization Applied to a Dual Well Monitoring Survey; #90224 (2015)

Scott Leaney, Xin Yu, Chris Chapman, Les Bennett, Shawn Maxwell, Jim Rutledge, and John Duhault

Search and Discovery.com

... problem have also been studied, using finite-difference Green function computations in isotropic media (e.g. Kim, 2011). Due to the computational...

Insights into Mobilization of Shale Oil Using Microemulsion

Khoa, Bui, Yucel Akkutlu, Andrei, Zelenev, Hasnain Saboowala, John R. Gillis, James A. Silas

Unconventional Resources Technology Conference (URTEC)

... the steady-state flow is fixed, one would predict a linear velocity profile by using equation (2). Here, in our simulations the shear-driven flow of oil...

Seismic Velocities, by D.S. MacPherson, #40150 (2005).

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Abstracts: Microseismic Source Inversion in Anisotropic Media; #90173 (2015)

Scott Leaney, Chris Chapman, and Tadeusz Ulrych

Search and Discovery.com

... three steps: 1. a ray-based, frequency domain, linear inversion for the moment tensor and source function; 2. a nonlinear inversion to obtain...

Lateral Changes in Seismic Velocities and Their Effect on Depth Prediction

J. Pinchin, M. Bayly

Petroleum Exploration Society of Australia (PESA)

... stacking velocities can be used for regional depth predictions, their detailed use in areas of rapid lateral velocity variations can produce erroneous...

Abstract: VSP-driven Model Building for Converted Waves Processing; #91204 (2023)

Ali Shaiban, Hussain Nassir, Mohammad Tayeb, Hussain Aldhaw

Search and Discovery.com

... of interest. Each VSP data would provide one velocity function. Geostatistical methods combine all of the available velocity functions in the area to build...

Gas Hydrates in Ocean Bottom Sediments

M. K. MacLeod

AAPG Bulletin

..., the pressure scale can be converted to a linear depth scale using a hydrostatic gradient of 0.46 psi/ft (10.4 kPa/m) (Fig. 4). Before determining the depth...

Premigration attenuation analysis and mapping to image domain by weighted migrations

Yonghe Sun, Chunling Wu, Mark Fan, Zhemin Tan

International Meeting for Applied Geoscience and Energy (IMAGE)

... line marks the direct arrival times. (a) The CSP gather of 𝑡 ∗ picks using linear-fit of log-spectral ratio. (b) Exact 𝑡 ∗ . (c) Difference between...

Deep learning-based joint inversion of time-lapse surface gravity and seismic data for monitoring of 3D CO2 plumes

Adrian Celaya, Mauricio Araya-Polo

International Meeting for Applied Geoscience and Energy (IMAGE)

...t to match the reservoir geometry via linear interpolation. Then the 2D features are converted into a 3D volume using a pointwise convolution, wher...

A Practical Review of Migration Issues and Solutions; #40723 (2011)

Ian F. Jones

Search and Discovery.com

..., the method of velocity model building must be tailored to the type of depth migration algorithm we intend to use. We nowadays commonly have available...

Seismic Image Enhancement of the Banyu Urip Carbonate Buildup, Cepu KKS, With Effective Data Denoise and Q-Compensated PSDM

Gene Skeith, Peter Traynin, J. M. Reilly, Mike Rainwater, Parada Devy Silitonga

Indonesian Petroleum Association

...’s proprietary Q-compensation algorithm for optimized Pre-Stack Depth Migration (PSDM). Velocity model building outside of the carbonate build-up was done...

Memory-efficient frequency-domain least-squares RTM using low-rank Greens functions via randomized SVD

Daniel E. Revelo, Reynam C. Pestana, Diego F. Barrera, Rodrigo S. Santos

International Meeting for Applied Geoscience and Energy (IMAGE)

... Green’s functions. THEORY Frequency-domain LSRTM According to the Born approximation (Woodward, 1992; Born and Wolf, 1999), and using Green’s function G0...

Uncertainty quantification for full-waveform inversion with a mini-batch gradient-based sampling method

Zeyu Zhao, Mrinal K. Sen

International Meeting for Applied Geoscience and Energy (IMAGE)

... be obtained by minimizing the objective function. However, due to the non-linear nature of the forward mapping, various types of noises in the data...

Practical solutions for reflection-driven FWI and application to Gulf of Mexico datasets

Max Liu, Ren-douard Plessix, Yi Yang, Jeffrey Vander Hurst, Na Shan, Rob Schelstrate, Colin Perkins, Vanessa Goh

International Meeting for Applied Geoscience and Energy (IMAGE)

...-depth ambiguity, and acoustic and shear impedance imprints in velocity updates. In this paper we dive deeper into some of these issues and discuss...

PP-PS depth-domain AVA inversion

Maud Cavalca, Robin P. Fletcher

International Meeting for Applied Geoscience and Energy (IMAGE)

... inversion, using point spread functions. We extend the approach of Fletcher et al. (2012) and estimate earth model properties through a joint PP-PS depth...

Lift Forces on Suspended Sediment Particles in Laminar Flow: Experiments and Sedimentological Interpretation: NOTES

John B. Southard

Journal of Sedimentary Research (SEPM)

... parabolic, let us assume that particle size and distance from the boundary are small enough that the velocity profile can be considered to be linear...

Seismic diffractions separation and imaging based on convolutional neural network

Jiaxing Sun, Jidong Yang, Zhenchun Li, Jianping Huang, Jie Xu

International Meeting for Applied Geoscience and Energy (IMAGE)

... using one pass of seismic modeling and migration for velocity models with and without artificial scatterers. Then, a simplified end-to-end CNN...

Some Principles and Techniques Used in Reconstructing the Hydraulic Parameters of a Paleo-Flow Regime

Alan V. Jopling

Journal of Sedimentary Research (SEPM)

...), may be incompatible with the field evidence. A more satisfactory combination of velocity and depth can then be obtained by using a trial-and-error...

Application of Sonic Logs to Estimate the Magnitude of Exhumation in the Foredeep Section of the Western Canada Foreland Basin

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OpenFWI 2.0: Benchmark Datasets for Elastic Full-waveform Inversion

Shihang Feng, Hanchen Wang, Chengyuan Deng, Yinan Feng, Min Zhu, Peng Jin, Yinpeng Chen, Youzuo Lin

International Meeting for Applied Geoscience and Energy (IMAGE)

.... It is worth noting that, unlike the linear upsampler employed at the end of the velocity decoder in (Feng et al., 2023), we implement the upsampler using...