Seismic imaging in Tarim Basin: Overcoming complex near-surface conditions

Xianhuai Zhu, Ruirui Zhao, Sam Gray, Wensheng Duan, Duoming Zheng, Ganglin Lei, Gengxin Peng, Rujie Zhang, Kun Xu, Grace Yan, Junru Jiao

International Meeting for Applied Geoscience and Energy (IMAGE)

... panel shows the ray density. Figure 7. Depth slices of estimated velocity models using super-long-offset first arrivals at depths 900m and 2000m...

Relationship Between Grain Size Parameter Distribution and Current Patterns in the Gironde Estuary (France)

George P. Allen

Journal of Sedimentary Research (SEPM)

... by consideration of the orbital bottom wave velocity as a function of depth. The depth limit for the transportational processes due to wave activity seems...

Wave-Formed Sedimentary Structures„A Conceptual Model

H. Edward Clifton

Special Publications of SEPM

... and relates directly to wave and water depth combinations Moreover the velocity parameters probably provide an adequate approx imation for a conceptual model...

Joint inversion of magnetotelluric and seismic travel time data with intelligent interpretation of geophysical models

Hongyu Zhou, Rui Guo, Maokun Li, Fan Yang, Shengheng Xu, Zuzhi Hu, Deqiang Tao

International Meeting for Applied Geoscience and Energy (IMAGE)

..., 1200-1600m and 1600-2000m, respectively. The resistivity and velocity of layers increase with depth. One or two anomalies are known to be located...

Efficient and accurate velocity building from Gramian-constrained multiphysics reflection and transmission data

Jide Nosakare Ogunbo

International Meeting for Applied Geoscience and Energy (IMAGE)

... of two different data sets. The Gramian constraint maintains a linear correlation between velocity models from the two different data set, bolstering...

Abstract: Velocity Model Building with Weighted Linearized Inversion … A VSP Data Case Study; #90187 (2014)

Mingyu Zhang, Richard Kuzmiski, and Zhengsheng Yao

Search and Discovery.com

... there are errors in first arrival picking, linear least squares inversion is used as the tool to determine the velocity model assuming that errors have...

Abstract: A Petrophysical Study from Floyd Shale, by Mriganko Sarkar, Chandra S. Rai, and Carl H. Sondergeld; #90078 (2008)

Search and Discovery.com

Representation of Bed Configurations in Depth-Velocity-Size Diagrams

John B. Southard

Journal of Sedimentary Research (SEPM)

...-depth plane with field boundaries of the given kind in each of the depth-velocity diagrams (fig. 1). Alternatively, by using a variety of sediment...

Reviving an old Buffalo - Breathing new life into an old dataset with modern technology

R. McGee, H. Debenham, P. Hoiles, A. O'Neill, J. Miller, A. Padman

Petroleum Exploration Society of Australia (PESA)

... highlight the large margin of error associated with the legacy velocity model and associated depth maps of the field. Citation: McGEE, R., DEBENHAM, H...

Elastic FWI for large impedance contrasts

Zedong Wu, Zhiyuan Wei, Zhigang Zhang, Jiawei Mei, Rongxin Huang, Ping Wang

International Meeting for Applied Geoscience and Energy (IMAGE)

... reflection energy from large impedance contrasts in acoustic FWI using field data, which in turn gives artificial velocity updates around the sharp...

Finding the reservoir in an intensely scattered wavefield: A case study from the Central Sichuan Basin, China

John Coffin, Mengmeng Zhang, Panos Doulgeris, Peter Haffinger, Angie Kelsay, Jinsong Li

International Meeting for Applied Geoscience and Energy (IMAGE)

... at the receivers, and the underlying seismic wavefields as they propagate through the subsurface as a function of time and depth, also in the linear...

7.0 The Structural Significance of Seismic Velocity - A Progress Report

P. E. Gretener

AAPG Special Volumes

... World Petr. Congr., v. 2, p. 149-157. Faust, L. Y., 1951, Seismic Velocity as a Function of Depth and Geologic Time; Geophysics, 16/2, p. 192-206...

Seismic Reflections from a Lau Basin Magma Chamber

Janet L. Morton, Norman H. Sleep

Circum Pacific Council Publications

... high. The effect of using a lower interval velocity would be to decrease the computed depth to the magma chamber, but would leave the flat shape...

Regularization for full-waveform inversion by generative diffusion model with score distillation

Bingbing Sun

International Meeting for Applied Geoscience and Energy (IMAGE)

...,ε ∂m REGULARIZATION FOR FWI USING SCORE DISTILLATION Remember that when we add Gaussian noise to the current velocity model m, we obtain...

A field data application of RockAVO: Data-driven, direct petrophysical inversion of prestack seismic data

Miguel Corrales, Hussein Hoteit, Matteo Ravasi

International Meeting for Applied Geoscience and Energy (IMAGE)

... petrophysical models for the stage of ’post-stack seismic inversion’ per parameter, using petrophysical well-log data and the velocity at well locations...

Addressing the complex near-surface challenges in the Delaware basin through recent FWI advancements

Ali Mohamed, Dmitry Kulakov, Daniel Suren, Wilfrid Milan, Larry Holifield, Vasudhaven Sudhakar

International Meeting for Applied Geoscience and Energy (IMAGE)

...-velocity model updated using Refraction FWI demonstrated significant improvements in the consistency of imaging and accurate positioning of seismic...

Modeling Allochthonous Salt Structures Integrating Microstructural Observations and Laboratory-Derived Salt Rheologies

R.A. Mazariegos , N.L. Carter , and J.E. Russell

GCAGS Transactions

... for model using the stress function derived from microstructural observations. For time of evolution of 2 My, a velocity anomaly occurs in one...

Time-Dependent Hydrodynamic Models of Turbidity Currents Analyzed with Data from the Grand Banks and Orleansville Events

A. D. Kirwan Jr., L. J. Doyle, W. D. Bowles, G. R. Brooks

Journal of Sedimentary Research (SEPM)

..., v = chsp, [1] where v = velocity of the flow down slope, c = Chezy coefficient, h = hydraulic mean depth, = density of flow...

Abstracts: Fast Search Algorithms for Automatic Localization of Microseismic Events; #90173 (2015)

Ulrich Zimmer and Jeremy Jin

Search and Discovery.com

... function, i.e. the probability that the event location is in (or close to) this grid point. On the left of Figure 2 the linear grid search evaluates every...

Abstract: Q-estimation from Uncorrelated Vibroseis VSP Model Data; #90172 (2014)

Arnim B. Haase

Search and Discovery.com

... and densities are variable? To answer this question a zero-offset synthetic VSP is computed using velocity and density logs of the Ross Lake survey...

Abstract: Azimuthal Simultaneous Elastic Inversion; #90172 (2014)

Jon Downton, Benjamin Roure

Search and Discovery.com

... is iteratively perturbed using simulated annealing to find a global solution which minimizes the objective function. The objective function contains...

Bedforms in the Pitt River, British Columbia

Gail M. Ashley

Dallas Geological Society

... of velocity data for entire flow depth (boundary layer) reveal that most profiles are composed of two distinct zones. The break between the zones occurs...

Bedforms in the Pitt River, British Columbia

Gail M. Ashley

CSPG Special Publications

... of velocity data for entire flow depth (boundary layer) reveal that most profiles are composed of two distinct zones. The break between the zones occurs...

AVA attribute estimation from misaligned seismic gathers using U-Net

Ammar Ghanim, Ricard Durall, Norman Ettrich

International Meeting for Applied Geoscience and Energy (IMAGE)

...zed to introduce variability. Move-out correction is applied to prestack gathers using a perturbed velocity model, inducing NMO stretch and RMO effects on prim...

Upper Crustal Structure Derived from Seismic Refraction Experiments: Grand Banks of Eastern Canada

I. Reid, C.E. Keen

CSPG Bulletin

... displayed at a reduced velocity of 4.5 rather than 6 km/s. Static corrections have been applied to the travel times for variations in depth...