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Showing 2,329 Results. Searched 200,619 documents.
Normalized energy-norm imaging condition for elastic reverse-time migration
Can Oren, Jeffrey Shragge
International Meeting for Applied Geoscience and Energy (IMAGE)
... the following steps: (1) forward model a source wavefield using an estimated wavelet while saving this wavefield at the domain boundaries, (2) reconstruct...
2022
Using New Techniques to Extract Stratigraphic Information from Seismic Data in Tight Gas Reservoirs
Heidy Correa, Fa Dwan, David Potter
Asociación Colombiana de Geólogos y Geofisicos del Petróleo (ACGGP)
... by computing the individual wavelet spectra. Each method has different applications that depend on the time and frequency resolution associated to each...
2009
Pre-Stack Calibration to Well Data: Intercept & Gradient Scaling A Case Study From the Norwegian North Sea
Nguyen Nam, Larry Fink
Indonesian Petroleum Association
... series, wavelet, intercept, and gradient. The first two steps, matching the reflectivity series with an appropriate time-depth function and matching...
2007
Automated hyper-parameter optimization for deep learning framework to simulate boundary conditions for wave propagation
Harpreet Kaur, Sergey Fomel, Nam Pham
International Meeting for Applied Geoscience and Energy (IMAGE)
... and biases. We create training labels using different isotropic and anisotropic models with different source wavelet frequencies using 2,500 time...
2022
Bayesian RockAVO: Direct petrophysical inversion with hierarchical conditional GANs
Miguel Corrales, Muhammad Izzatullah, Matteo Ravasi, Hussein Hoteit
International Meeting for Applied Geoscience and Energy (IMAGE)
... and the effect of the wavelet is subsequently removed as follows: m = (WD)−1 CT HT Wr = (WD)−1 b p p (5) where Hp = VT Λ−1 , W is the wavelet operator, D...
2022
Lithology and Fluid Seismic Determination for the Acae Area, Puerto Colon Oil Field, Colombia
F. H. Gómez, J. P. Castagna
Asociación Colombiana de Geólogos y Geofisicos del Petróleo (ACGGP)
... analysis performed previously. The methods for lithology assessment consist of: • Conventional wavelet analysis to estimate the seismic resolution...
2004
Qualitative Seismic Attribute in Drilling Oil and Gas Development Wells, Kerisi Field, Natuna Sea, Indonesia
Yasril Kahar, Vaughn L. Ball, Sunil K. Shalia
Indonesian Petroleum Association
... and gas can still be separated from brine, but with a weaker separation compare to cross-plot in Figure 2b. In addition, filtering by a seismic wavelet...
2008
Building high-resolution models and synthetic seismic data to evaluate interpretation scenarios
Tiago Santos Cabral, Rodrigo Lopes Fernandes, Daina Popic Bendoraitis, Josair Estrela Gonalves Junior, Luiz Alberto Santos
International Meeting for Applied Geoscience and Energy (IMAGE)
... pseudoimpedance. For any kind of acoustic seismic inversion, it is essential to remove the wavelet and to improve the bandwidth of the data, so...
2022
Deep learning Laplace-Fourier full-waveform inversion with virtual supershot gathers
Lei Fu, Daniele Colombo, Weichang Li, Ernesto Sandoval-Curiel, Ersan Turkoglu
International Meeting for Applied Geoscience and Energy (IMAGE)
... of FWI to land seismic data is hindered by multiple difficulties including the low SNR of the data, the spatially varying source wavelet...
2022
Imaging and fold comparison of mirror reverse time migration vs. interferometric imaging for VSP data
Liwei Cheng, James Simmons, Ali Tura
International Meeting for Applied Geoscience and Energy (IMAGE)
... finite-difference method with a 25 Hz Ricker wavelet and a free-surface boundary condition. The velocity model is shown in Figure 2a, and the density...
2022
Retrieving high-resolution acoustic impedance using full-waveform inversion in presalt reservoir setting, offshore Brazil
Akshat Abhishek, Alok K. Soni, Rene-Edouard Plessix, Martijn Blaauw, Jaydip Guha, Gautam Kumar
International Meeting for Applied Geoscience and Energy (IMAGE)
... and d mod are the observed and modeled data, m is the earth model parameter vector, w is the source wavelet, s, r,t denotes source, receivers...
2022
Study on fluid discrimination method based on prestack frequency-dispersion characteristics
Lien Bian, Jun Ming, Yuxiu Wang, Qian Yu
International Meeting for Applied Geoscience and Energy (IMAGE)
... is called Kurtosis S transformation. Step 3: Spectral balance Because S(t, n, f) contains the overprint of seismic wavelet, so we perform spectral balance...
2022
Seismic erratic noise suppression based on Laplacian-scaled mixture prior
Haotian Xu, Weiwei Xu, Wenchao Chen
International Meeting for Applied Geoscience and Energy (IMAGE)
... and represents the trade-off parameter. The dictionary is often selected as Fourier operator (Sacchi et al. 1998), Seislet operator (Liu et al. 2015), Wavelet...
2022
Modeling-based amplitude recovery (MBAR)
Yonghe Sun, Zhemin Tan, Jeff Nealon, James Davenport, Mark Fan, Yuli Zhang, Brian Church
International Meeting for Applied Geoscience and Energy (IMAGE)
... of the synthetic data is needed for MBAR in equation (4), the source wavelet with frequency band lower than that of the field data can be used to create...
2022
Subsurface Surveillance in Low Permeability Oil Reservoir at Tanjung Field Barito Basin South Kalimantan
Trisakti Kurniawan, Bambang Prasetiyo, Darwin Tangkalalo
Indonesian Petroleum Association
... consistency at around 700ms and less noise content compared to the original data are shown in Figure 9. Wavelet estimation was carried out on every...
2010
An Overview of Ray Trace Modeling with an Example from the Wichita Mountain Front in Southern Oklahoma
Jan Dodson, Roger A. Young, Kevin Smart
Oklahoma City Geological Society
... seismic traces can be created by convolving the arrival times and amplitudes with a wavelet. When synthetic traces are created from normal incidence...
2001
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)
... be defined with ρi+1 vi+1 − ρi vi Zi+1 − Zi = Ri = ρi+1 vi+1 + ρi vi Zi+1 + Zi where Ri is seismic reflectivity, Wi is zero phase ricker wavelet , ni...
2022
Monopole slow formation shear head wave Greens function in a LWD borehole acoustic configuration
Tim Geerits, Stefan Schimschal, Anna Swiatek
International Meeting for Applied Geoscience and Energy (IMAGE)
... wavelet convolved sums of these contributions to full waveform RAI results (e.g., Tsang and Rader, 1979). Although, their final comparison appears...
2022
Extrapolation of Reservoir Lithology Away from Wells Using Seismic-Geologic Controls
Ruben D. Martinez, Geoffrey Mansfield
Indonesian Petroleum Association
... for each seismic trace. In order to optimise the initial model, the acoustic impedance model, the seismic data and a wavelet estimated from...
1991
Synthetic-data-driven deep learning method for elastic parameter inversion
Shuai Sun, Luanxiao Zhao, Huaizhen Chen, Zhiliang He, Jianhua Geng
International Meeting for Applied Geoscience and Energy (IMAGE)
... in synthesizing gathers are all zero-phase wavelet with the dominant frequency of 14Hz extracted from the field seismic data. Figure 1d shows a set of P-, S-wave...
2023
Acoustic impedance multichannel inversion constrained by spatial reflection features
Yaming Yang, Xingyao Yin, Kun Li
International Meeting for Applied Geoscience and Energy (IMAGE)
..., the 3D seismic data can be synthesized from acoustic impedance and wavelet with the expression: (5) SG Z, where S is the 3D seismic data; G 1 2 WD x...
2023
Multidimensional Data-driven Characterization of Deepwater Turbidite Deposits, Leonardian Bone Spring Formation, Delaware Basin, Southeast New Mexico and West Texas
Rui Zhai, Matthew J. Pranter, John D. Pigott
International Meeting for Applied Geoscience and Energy (IMAGE)
... and coherence, and spectral decomposition, such as continuous wavelet transform (CWT), are employed to visualize seismic geomorphologic features...
2023
4D Seismic Reservoir Characterization of a CO2 Flood: A New Technology
Sony R. Mohammad, Thomas L. Davis
Indonesian Petroleum Association
... of the value on the initial model. The last important input for the inversion process is the seismic wavelet. An iterative wavelet extraction from...
2011
Characterizing Heterogeneities in a Clastic Reservoir Using Joint/Simultaneous PP/PS Inversion, 4D Timelapse, Multi Attribute Analysis, and PSDM
Jason Nycz
Petroleum Exploration Society of Australia (PESA)
...), however the low frequency of the PS data prevents any detailed interpretation of specific units. Because prestack inversion removes the seismic wavelet...
2016
Reflection waveform inversion regularized with structural constraints and scattered data interpolation
Chengliang Wu, Huazhong Wang, Bo Feng, Ting Lei, Rongwei Xu, Shen Sheng
International Meeting for Applied Geoscience and Energy (IMAGE)
... al. (2007) employed L1-norm regularization in the wavelet domain to solve the tomography inversion problem. Li et al. (2012) utilized curvelet-domain...
2023