Recent Stromatolites from Hydromagnesite and Aragonite Depositing Lakes Near the Coorong Lagoon, South Australia

M. R. Walter , S. Golubic, W. V. Preiss

Journal of Sedimentary Research (SEPM)

... in width from about 10 cm to 100 cm (Figs. 4-5). During the following winter the margins of these polygons are eroded back by wind-generated wavelets...

Integration of geology, rock physics, logs, and prestack seismic data for reservoir porosity estimation

Abdulaziz M. AlMuhaidib, Mrinal K. Sen, M. Nafi Toksoz

AAPG Bulletin

... properties. It incorporates angle-dependent reflectivity into the forward model by including multiple angle-dependent wavelets and three a-priori low...

An approach for three-dimensional quantitative carbonate reservoir characterization in the Pampo field, Campos Basin, offshore Brazil

Danilo Jotta Ariza Ferreira, and Wagner Moreira Lupinacci

AAPG Bulletin

... in the regions between the top and the base of the Albian carbonate platform. To do this, new wavelets were estimated in the 1500- to 3000-ms interval...

Abstract: Practical Applications of Seismic Anisotropy; #90187 (2014)

Philip Wild

Search and Discovery.com

... with well ties using wavelets of up to 30° of phase error. Seismic inversion, however, must have wavelets with phase errors of less than 10°, in order...

Abstract: Recovering Low Frequencies for Impedance Inversion by Frequency Domain Deconvolution; #90224 (2015)

Sina Esmaeili and Gary Frank

Search and Discovery.com

... reflectivity function. But in practice, because of the bandlimited nature of wavelets and the unavoidable presence of noise, even if we could find d...

Abstract: Joint OBN and 3-D DAS-VSP Data Acquisition and Processing in East China Sea; #91204 (2023)

Gang Yu1, Haibo Liu, Zhonglin Cao, Junjian Li, Jianguo Li, Yuanzhong Chen, Guangming He, Junjun Wu, Ximing Wang

Search and Discovery.com

... of upgoing and downgoing wavefields; (2) Signal deconvolution processing: use the downgoing wave to obtain wavelets for bubble suppression and wavelet zero...

-- no title --

user1

Search and Discovery.com

... International Conference and Exhibition (ICE) Muscat, Oman, 30 September - 2 October, 2024. decomposed into sets of wavelets with different dominant...

Flume Experiments on Lower-Flow-Regime Bed Forms in Coarse Sand

Warren R. Costello, John B. Southard

Journal of Sedimentary Research (SEPM)

... to Equation 2 are of the form h = f(x - kct). These solutions can be viewed as describing point "wavelets," each moving along the x axis with velocity kc...

The Newporte Structure: a Petroliferous, Subsurface Impact Crater, Renville County, North Dakota

Timothy R. Gerlach, Neil L. Anderson, Nels F. Forsman

Williston Basin Symposium

... line. The SS of Figure 3 was generated using zero-phase Ricker wavelets...

Microseismic imaging with three-component borehole sensors

Jakob B. U. Haldorsen

International Meeting for Applied Geoscience and Energy (IMAGE)

... signatures for both the P- and S-waves were 120 Hz Ricker wavelets, with frequency spectra that extend beyond 250 Hz. The figure also shows horizontal...

A feasibility study of Boree Salt body mapping in the Adavale Basin using passive seismic data

Peng Guo, Erdinc Saygin, Asrar Talukder

Australian Energy Producers Journal

... of surface waves for mapping salt bodies at these depths. Ricker wavelets with dominant (peak) frequencies of 0.12, 0.25, 0.5, and 1.0 Hz were used...

Joint OBN and 3D DAS-VSP data acquisition and processing in East China Sea

G. Yu, G. M. He, Z. L. Cao, H. B. Liu, J. J. Li, Y. Z. Chen, J. J. Wu, J. G. Li, X. M. Wang

International Meeting for Applied Geoscience and Energy (IMAGE)

... resolution enhance Wavelets from downgoing waves Prestack depth migration Filter gain Time-depth conversion Bubble suppression Wavelet zero phase...

Robust joint inversion and segmentation of 4D seismic data

Juan Romero, Matteo Ravasi, Nick Luiken

International Meeting for Applied Geoscience and Energy (IMAGE)

... in the modelling operators G1 and G2 . For example, different wavelets can be used without requiring any pre-processing to equalize the spectral content...

Deblurring migration images with point spread function filter

Cewen Liu, Nanxun Dai, Wei Wu, Xiaofeng Wu, Mingjie Guo, Haohuan Fu

International Meeting for Applied Geoscience and Energy (IMAGE)

... wavelets to keep migration Green’s function constant within a subsection. Moreover, the resolution enhancement of the migration images is still...

Transition–Zone Seismic Surveys in Southeast Asia

R. E. Sheriff, Palmer L. Greene, Harold Reaves

Indonesian Petroleum Association

.... A unique feature of PULSE II is that it accommodates non minimum-phase situations, and experience has shown that the effective wavelets from impulsive...

Surface Source Technology

Stan D. Brasel

Pacific Section of AAPG

... the initial shot and was 4 times larger. The bubble oscillation and decay is readily seen on the original pulse form. Figure 3. Source Wavelets New & Old...

The generation of equivalent sources by 3D skeletonization of the migration density field

James Brewster

International Meeting for Applied Geoscience and Energy (IMAGE)

... using wavelets: Geophysics, 75, no. 3, L51–L59, doi: https://doi.org/10 .1190/1.3378764. Sanchez, V., D. Sinex, Y. Li, M. Nabighian, D. Wright, and D...

Least-squares reverse time migration of seismic source coding based on Shearlet transform

Yingkaer Nabi, Xiangbo Gong, Zhuo Xu

International Meeting for Applied Geoscience and Energy (IMAGE)

...: https://doi.org/10.1137/060649781. Guo, K., D. Labate, W. Q. Lim, G. Weiss, and E. Wilson, 2006, Wavelets with composite dilations and their MRA...

Seismic Modeling

Abilene Geological Society

... for different wavelets. Figure 1. Edwards Porosity Development Figure 2. Edwards Porosity Development Figure 3. Edwards Porosity Development Figure 4...

Estimating Smectite Content from Seismic Data

Roman Beloborodov, Marina Pervukhina, Valeriya Shulakova, Dimitri Chagalov, Matthew Josh, Michael B. Clennell, Gavin Ward, Matthew Waugh, Juerg Hauser

Australian Petroleum Production & Exploration Association (APPEA) Journal

... physics properties of interest and elastic anisotropy. Estimate seismic wavelets from the well ties. Perform AVO inversion using linear approximation...

Seismic sparse time-frequency representation via GAN-based unsupervised learning

Youbo Lei, Yang Yang, Naihao Liu, Shengtao Wei, Jinghuai Gao, Xiudi Jiang

International Meeting for Applied Geoscience and Energy (IMAGE)

... first downsample the Marmousi reflectivity model into the size of 512x512. Then, we adopt the Ricker wavelets with different dominant frequencies...

Orthorhombic AVAZ inversion in the Laplace-Fourier domain

Lin Li, Jinmiao Zhang, Guangzhi Zhang, Zhenyu Zhu, Jiajia Zhang, Chao Li, Xinpeng Pan

International Meeting for Applied Geoscience and Energy (IMAGE)

...) derivative matrix, the T denotes the transpose of a matrix. symbol The convolution of the reflection coefficients R with the wavelets can be formulated...

An optimal aperture crosscorrelation imaging condition for Marchenko imaging

Xiaochun Chen, Yezheng Hu, Yukai Wo, Weiping Cao, Xuri Huang

International Meeting for Applied Geoscience and Energy (IMAGE)

... in Figure 3, and display them as wiggles (see Figure 4). It can be observed that the traces obtained with a larger aperture have their wavelets...

Full-waveform inversion and FWI imaging for land data

James Sheng, Cristina Reta-Tang, Faqi Liu, Alfredo Vzquez Cant, Alejandro Cabrales Vargas

International Meeting for Applied Geoscience and Energy (IMAGE)

... the minimum usable frequency for FWI to 5 Hz. Minimum phase wavelets are obtained from data spectrum and used during FWI. We use a finite-difference...

Wave-equation based seismic AVO inversion: A pragmatic approach to use the full elastic wave-field for exploration and production

Peter Haffinger, Dries Gisolf, Panos Doulgeris, Hansel Gonzalez

International Meeting for Applied Geoscience and Energy (IMAGE)

...) . The general workflow of AVO inversion is conceptually depicted in Figure 1. Input to the scheme are seismic wavelets, a low-frequency model and migrated...