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The AAPG/Datapages Combined Publications Database
Showing 756 Results. Searched 200,293 documents.
Estimating elastic wave velocities, attenuation factors, and their frequency dependency by inverting ultrasonic waveforms
Michel M. Nzikou, Alexey Yurikov, Maxim Lebedev, Boris Gurevich
International Meeting for Applied Geoscience and Energy (IMAGE)
... E(t) = E0 1 − j=1 k j (1 − exp(−t/τ j ) , (2) E∞ − E0 (1 − exp(−t/τ) , E0 (3) or, in frequency domain E(ω) = E0 1 + E∞ − E0 E0 1− τ 2 ω 2...
2022
Efficient and accurate velocity building from Gramian-constrained multiphysics reflection and transmission data
Jide Nosakare Ogunbo
International Meeting for Applied Geoscience and Energy (IMAGE)
... years, minimizing the data at target correlation coefficient of 0.96 after 10 iterations. At the moment when the frequency-domain data was acquired...
2022
Prediction and removal of internal multiples using an improved CFP approach
Zhiheng Jiang, Yongqiang Yao, Pengzhi Zhang
International Meeting for Applied Geoscience and Energy (IMAGE)
... ( z m , z 0 ) represents a component of CFP gathers in frequency domain. In practice, each shot record is convoluted with the focus operator at the grid...
2022
Low-frequency data reconstruction for full-waveform inversion
Ramzi Djebbi, Maiza Bekara, Jaime Ramos-Martinez, Nizar Chemingui
International Meeting for Applied Geoscience and Energy (IMAGE)
... at higher frequencies. It is based on the concept that a sequence of spikes in the time domain maps into a superposition of linear harmonics in frequency...
2022
Shale Gas OVT Seismic Data Prestack Trace-Gather Optimization Technique
Yusheng Zhang, Gang Yu, Xing Liang, Benjing Liu, Guangming Hu
Unconventional Resources Technology Conference (URTEC)
... of Gaussian operators. The detailed steps of spectral balancing are as follows: frequency domain by Fourier transform; Transform the seismic signals from...
2015
Streamlining subsurface insights: Single extrapolation for holistic Green's function generation
Hongwei Liu
International Meeting for Applied Geoscience and Energy (IMAGE)
..., the OWE equation in frequency-space domain is: � 𝜔𝜔 2 𝜕𝜕 2 𝜕𝜕 + 𝑖𝑖 𝑖𝑖� 𝑑𝑑(𝑥𝑥, 𝑧𝑧, 𝜔𝜔) = 0, 𝛬𝛬 = � + 2. 2...
2024
Reservoir prediction technology based on tuning spectral decomposition
Wang Qingzhen, Wang Jianhua, Zheng Ying
International Meeting for Applied Geoscience and Energy (IMAGE)
... data from time domain to time-frequency domain, a four-dimensional data volume will be formed, which can be divided into three types of 3D data volumes...
2024
The new method of sandbody connectivity characterization for fluvial reservoir and its application in Bohai oilfield
Xuetong Liu, Hebing Tang, Xuefeng Zhou, Zhenglong Zhang
International Meeting for Applied Geoscience and Energy (IMAGE)
..., geophysists have put forward some methods, such as median filter, frequency domain filter, wavelet domain filter, curvelet domain filter and so on (Hennenfent...
2024
Prestack inversion for tight sandstone thin reservoirs based on anisotropic rapid reflectivity method
Zhen Yang, Zhenfeng Liu, Junzhou Liu
International Meeting for Applied Geoscience and Energy (IMAGE)
... and expanding it across the full frequency domain, achieving vectorization. Yang et al. (2022) equivalently modeled tight sandstone thin reservoirs as a thin...
2024
Monitoring Hydraulic Fracturing Fluid Movement Using Ground-Based Electromagnetics, With Applications to the Anadarko Basin and the Delaware Basin NW Shelf
Mark S. Hickey, Santiago Treviño III, Mark E. Everett
Unconventional Resources Technology Conference (URTEC)
...). The governing Maxwell’s equations are solved in the frequency domain for the response of a secondary set of EM potentials (As,Ψs) with conductivity...
2017
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)
...: 𝑈𝑈(𝜏𝜏, 𝜔𝜔) is uncompensated frequency domain data, that is, the result of Fourier transform of seismic data; 𝑈𝑈(𝜏𝜏 + ∆𝜏𝜏, 𝜔𝜔) is frequency domain data after amplitude...
2024
The Influence of Fine-Grained Sediments on Wave Propagation, West Louisiana Coast
Sheremet, A., Stone, G. W., Walker, N. D., Roberts, H. H., Huh, O. K., Hsu, S. A., Inoue, M., Rouse, L., Welsh, S., and Bentley, S.
GCAGS Transactions
... by a discussion of wave observation, both in the time and frequency domain. Results are summarized in the concluding section. End_Page 899...
2002
Karst Cavern Identification and Deep Imaging in the Delaware Basin Using Magnetotellurics
Patricia de Lugão, Eric Corrêa, Berthold Kriegshäuser, Isaac Santos, Ludwig Kriegshauser
Unconventional Resources Technology Conference (URTEC)
... is a frequency-domain electromagnetic geophysical technique that relies on the naturally occurring variations of the geomagnetic field as source...
2024
Gabor Depth Migration using a New Adaptive Partitioning Algorithm
Yongwang Ma
Search and Discovery.com
... migration, the temporal Fourier transform is applied to the input seismic data to transform to the frequency domain. Then the spatial Fourier...
Unknown
Gabor Depth Migration using a New Adaptive Partitioning Algorithm
Yongwang Ma
Search and Discovery.com
... migration, the temporal Fourier transform is applied to the input seismic data to transform to the frequency domain. Then the spatial Fourier...
Unknown
Abstract: Inverse Modeling the Quality Factor in an Attenuating Medium; #90171 (2013)
Dali Zhang, Michael P. Lamoureux, and Gary F. Margrave
Search and Discovery.com
... these memory variables represented in the complex viscoelastic modulus in the frequency domain. To approximate a quality factor that is approximately...
2013
Abstracts: The Conventional and Non-conventional Seismic Differencing; #90173 (2015)
Vanja Vracar and Robert J. Ferguson
Search and Discovery.com
... in the frequency domain, hence, equation (1) is Fourier transformed to: (2) AAPG Search and Discovery Article #90173 CSPG/CSEG/CWLS GeoConvention 2011...
2015
Target Detectability of Marine Controlled Source Electromagnetic Method Insights from 1-D Modeling, #40751 (2011)
Souvik Sengupta,
Search and Discovery.com
... a frequency domain forward modeling code by Løseth and Ursin (2007) to show the effectiveness of CSEM in varying geological setup. Introduction Marine...
2011
Sequence Stratigraphic Boundary Delineation Based on Adaptive Seismic Decomposition, #42067 (2017).
Fangyu Li, Rui Zhai, Jie Qi, Bo Zhang, Kurt J. Marfurt
Search and Discovery.com
... decomposition methods, the VMD decomposes seismic signal in the frequency domain, which makes it more robust and optimal. Without any priori knowledge...
2017
Targeting Deeper
Halfdan Carstens
GEO ExPro Magazine
... that all measure the horizontal component of the electromagnetic field in the frequency domain,” says Jostein Kjerstad, who has been instrumental...
2007
Self-supervised learning for seismic swell noise removal
Yuan Zi, Shirui Wang, Pengyu Yuan, Xuqing Wu, Jiefu Chen, Zhu Han
International Meeting for Applied Geoscience and Energy (IMAGE)
... on priors. Two priors in the frequency domain are introduced to the training Second International Meeting for Applied Geoscience & Energy...
2022
Finite Difference Modeling: Part II: How to clean numeric time dispersion
Lasse Amundsen, Ørjan Pedersen, Martin Landrø
GEO ExPro Magazine
... times, we can Fourier transform û to the frequency domain at frequency f. At this point this wavefield u equals the temporally dispersion-free...
2018
Mapping Sand Fairways and Salt Structures Using Modern Techniques Applied to South Louisiana Gravity Data [Abstract]
Shawn T. Mulcahy,, Paul N. Lawless
New Orleans Geological Society
... into areas where there is less data or geologic information. We applied a series of frequency-domain filters that enhance certain aspects of the input...
2003
The Attenuation Effects of Surface-Wave Propagations on Rockmass Using SASW Method
Suharsono, Abdul Rahim Samsudin
Geological Society of Malaysia (GSM)
... of measurements were analyzed in the frequency domain and the attenuation characteristics of rockmass were studied in term of a frequency-independent...
2003
Quantitative FWI characterization of reservoir properties at the CMC Newell County Facility
Qi Hu, Matthew Eaid, Scott Keating, Kristopher Innanen, Xiaohui Cai
International Meeting for Applied Geoscience and Energy (IMAGE)
... is the objective function, d is the observed data, R is a sampling matrix representing receiver measurement. Here we consider the a 2D frequency-domain...
2023