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)

... in the wavenumber domain. Taking the spatial Fourier transform of the time-domain 2D convolution of Equation (3), we can obtain...

A gradient-free Bayesian full-waveform inversion approach for background model uncertainty quantification

Shuhua Hu, Zeyu Zhao, Fuchun Gao, Faqi Liu, Shuo Zhang, Mrinal K. Sen

International Meeting for Applied Geoscience and Energy (IMAGE)

... computation of DCT can be achieved by fast Fourier transform (FFT) and multi-dimensional DCT can be easily implemented by applying 1D DCT in each dimension...

Research and application of Intelligent high resolution processing method based on ISTA-Net

Huahui Zeng, Qin Su, Sanyi Yuan, Lide Wang, Yanwu Xu, Huijie Meng, Deying Wang

International Meeting for Applied Geoscience and Energy (IMAGE)

...on coefficient, and assuming that the parameters of neural network learning are the basis functions of Fourier transform or curvelet transform, the above formu...

Abstract: Quantitative Predication for Reservior Porosity via AVO; #90187 (2014)

Li Ang, Chen Shumin, Zhang Erhua, and Ju Linbo

Search and Discovery.com

.... Geophys., Expanded Abstracts， 252-254． Hargreaves N D’Calvert A J.Inverse Q filtering by Fourier transform. Geophysics,1991,56(4): 519-527...

Data-driven near-surface Q compensation: A case study in Sichuan Basin of China

Xinyuan Feng, Yulian Zhao, Mingtu Xiao

International Meeting for Applied Geoscience and Energy (IMAGE)

... Data-driven Near-surface Q Compensation and Its Application The amplitude spectrum is obtained by Fourier transform of the sampled signal data...

Acoustic waveform inversion with the Lippmann-Schwinger equation constraint

Rahul Sarkar, Biondo Biondi

International Meeting for Applied Geoscience and Energy (IMAGE)

... penalty to higher frequencies. An alternating strategy to minimize Jµ ,λ λ In the above expression, F −1 denotes the inverse Fourier transform, and q(·, z...

Structural Analysis Using Spatial Filtering in Interior Plains of South-Central Alberta

J. E. Robinson , H. A. K. Charlesworth , M. J. Ellis

AAPG Bulletin

.... The output waveform in the distance domain then can be obtained by using the inverse Fourier transform. In spite of the apparent simplicity of filtering...

Abstract: Greedy Least-Squares and its Application in Radon Transforms; #90171 (2013)

Juefu Wang and Mark Ng

Search and Discovery.com

... amplitude distribution within the Radon panel such that we can fit the input data, we can use the inverse Radon transform as the feasibility function...

Abstract: Blind Surface Consistent Wavelet Estimation; #90187 (2014)

E. Bongajum, N. Kazemi, and M. D. Sacchi

Search and Discovery.com

... (Levin, 1989; Cambois and Stoffa, 1992). SCD can be performed in the log/fourier domain (Taner and Koehler, 1981; Morley and Claerbout, 1983; Cambois...

Robust seismic data denoising based on factor group-sparse regularization

Mi Zhang, Yang Liuy, Jingming Liy, Gui Cheny

International Meeting for Applied Geoscience and Energy (IMAGE)

... approximation, the inverse Fourier transform is used to restore the data to the time-space domain. EXAMPLES (g) (h) Figure 1: Denoising comparison...

Optimum Deconvolution for Seismic Inversion Purposes

M. Suprajitno, L. Nutt, P. Busono

Southeast Asia Petroleum Exploration Society (SEAPEX)

... system. A commonly used characteristic system D*−1 is the cascade of Fourier transform, complex exponential and the inverse Fourier transform...

Automatic well-log baseline correction via deep learning for rapid screening of potential CO2 storage sites

Misael M. Morales, Carlos Torres-Verdín, Michael Pyrcz, Murray Christie, Vladimir Rabinovich

International Meeting for Applied Geoscience and Energy (IMAGE)

... of 𝑿 is given by 𝓕𝑿 = . 𝑿𝑒 (4) The Hilbert transform of 𝑿 is expressed as (5) 𝓗 𝑿 = ℱ 𝑿 (ℱ 𝑿 2𝑈) , where ℱ is the inverse Fourier transform...

Estimation of Seismic Attenuation (Q): More Insight from Zero-Offset VSP

Mohammad Risyad

Indonesian Petroleum Association

... stations and extract time series data of their respective depths, time-to-frequency conversion is performed using Fast Fourier Transform (FFT...

Seismic Inversion Resolution Enhancement With (3S) Spectral Blueing, Spectral Balancing, and Stochastic Inversion on Fluvio Deltaic Environment

Aji Darma Maulana, Nine Safira, Ongki Ari Prayoga, Egie Wijaksono, Alit Ascaria

Indonesian Petroleum Association

... are shown in Figure 2b. The third step is to separate the frequency and then proceed to the Inverse Fourier Transform process, which converts the data...

Abstracts: Footprint Removal with Co-ordinate Rotation; #90173 (2015)

Mark Ng and Ye Zheng

Search and Discovery.com

... of the fact that when a 2D spatial Fourier transform is applied to a time slice section with a footprint pattern that is aligned parallel to any binning co...

Integrating Surface Seismic, Microseismic, Rock Properties and Mineralogy in the Haynesville Shale.

Neil Peake, Gabino Castillo, Norbert Van de Coevering, Simon Voisey, Antoine Bouziat, Kevin Chesser, Guy Oliver, Chi Vinh Ly

Unconventional Resources Technology Conference (URTEC)

.... The azimuthal Fourier coefficients were calculated by performing a Fourier transform of azimuthally sectored seismic data over particular ranges...

The Effects of Fluvial Abrasion on the Shapes of Quartz Sand Grains

Mark Peterson , Jim Mazzullo

GCAGS Transactions

... with the Fourier technique and examined with the scanning electron microscope. The Fourier technique shows that there are no significant changes in the shapes...

Interpolated fast and computational-efficient multidimensional singular spectrum analysis (I-FMSSA) for compressive simultaneous-source data processing

Rongzhi Lin, Yi Guo, Fernanda Carozzi, Mauricio D. Sacchi

International Meeting for Applied Geoscience and Energy (IMAGE)

... multiplication and ⇤ denotes convolution operation. F and F 1 represents fast Fourier transform and inverse fast Fourier transform, respectively. Therefore...

Accelerometer vs. Geophone Response: A Field Case History

Search and Discovery.com

... to determine the ground acceleration from the geophone data. Taking the Fourier transform of the simple harmonic oscillator equation allows us...

Abstract: Robust Rank-Reduction Filters for Erratic Noise; #90174 (2014)

Stewart Trickett, Lynn Burroughs, and Andrew Milton

Search and Discovery.com

... the Discrete Fourier Transform (DFT) of each trace. 2: For each frequency… 2.1: Insert the complex values for this frequency and all traces...

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 extrapolation using a high-resolution discrete Fourier transform: IEEE Transactions on Signal Processing, 46, 31–38, doi: https://doi.org...

Unsupervised deep learning for seismic data reconstruction

Gui Chen, Yang Liu, Mi Zhang

International Meeting for Applied Geoscience and Energy (IMAGE)

... generalized Fourier transform: Geophysics, 76, no. 1, V1–V10, doi: https://doi.org/10.1190/1.3511525. Oropeza, V., and M. Sacchi, 2011, Simultaneous seismic...

ABSTRACT: Post-Stack Signal Enhancement, by Steve Spratt; #91035 (2010)

Search and Discovery.com

Application of improved shearlet transform algorithm in noise filtering of complex fault block oilfield in eastern Bohai Sea

Yu Xiong, Cai Li, Yongqiang Yao, Shaoxuan Li, Lei Gao

International Meeting for Applied Geoscience and Energy (IMAGE)

... by the threshold, and then the seismic data suppressing random noise is obtained by using the inverse shearlet transform. The shearlet global...

Seismic signal considerations for fast reservoir characterization

Folkert Hindriks

International Meeting for Applied Geoscience and Energy (IMAGE)

... of the integrated signal by computing the inverse Fourier transform (Brandt, A. and Brincker, R., 2014). 𝑓 ′ (𝑡) = 1 2...