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Showing 1,541 Results. Searched 200,630 documents.
Mapping of Rock Property Changes in Space and Time Using Microseismic Data through Full-Waveform Inversion
Jyoti Behura
Unconventional Resources Technology Conference (URTEC)
... of the source-timefunction amplitude, and § - 1 represents the inverse Fourier Transform operator. The source term in equation 4 is different from the one used...
2016
Frequency-dependent reflection characteristics of single thin layer and waveform inversion
Zhengyang Kuai, Danping Cao, Chao Jin
International Meeting for Applied Geoscience and Energy (IMAGE)
... an important role. Partyka et al (1999) proposed spectral decomposition technique using Fourier transform to determine thin layer thickness. Rubino...
2023
Broadband seismic probabilistic AVO inversion for reservoir properties
Kun Li, Qingwen Zheng, Xingyao Yin, Yaming Yang
International Meeting for Applied Geoscience and Energy (IMAGE)
... and Fourier operator of the complexfrequency-domain transform, respectively. To illustrate the seismic AVO inverse problem clearly, it is assumed...
2023
The Earths radial conductivity model derived from the latest CSES and Swarm satellite data
Mingquan Lai, Xiuyan Ren, Changchun Yin, Yunhe Liu, Bo Zhang, Yang Su
International Meeting for Applied Geoscience and Energy (IMAGE)
... into frequency domain using a Fourier transform. Then, by applying the segmented averaging method (Semenov & Kuvshinov, 2012) and the robust least-squares...
2023
Reservoir spatial characterization based on tuning body spectrum decomposition along the target layer
Ying Zheng, Qingzhen Wang, Jianhua Wang, Rao Huang, Zhenyu Zhu
International Meeting for Applied Geoscience and Energy (IMAGE)
... the movement of harmonic waves and has no effect on the amplitude spectrum of the Fourier transform. The form of generalized S-transform with 5-coefficient...
2024
Modelling pure qP-wave in attenuative VTI media using fractional viscoacoustic wave equation
Shanshan Zhang, Kun Tian, Ning Qin, Yanguang Wang, Changbo Wang
International Meeting for Applied Geoscience and Energy (IMAGE)
..., and performing time and space inverse Fourier transform, the fixed fractional-order pure qPwave equation of velocity and attenuative-VTI medium can...
2024
Low-rank representation for reflectivity model and its applications in least-squares migration
Jidong Yang, Jianping Huang, Hejun Zhu, George McMechan
International Meeting for Applied Geoscience and Energy (IMAGE)
... Freire, and W. Kessinger, 1990, Split-step Fourier migration: Geophysics, 55, 410–421, doi: https://doi.org/10 .1190/1.1442850. Xue, Z., Y. Chen...
2024
Characterizing in-well DAS signal before fiber breakage
Martis James-Ravenell, Ge Jin
International Meeting for Applied Geoscience and Energy (IMAGE)
.... Our methodology involved applying the Fourier Transform to separate specific frequency bands, followed by normalization of amplitude data to a set...
2024
Analysis of geologic structures using deep sonic imaging
Nobuyasu Hirabayashi, Leon Dahlhaus, Rajeev Kumar, Jeroen Jocker, Erik Wielemaker, Manish Lal Khaitan, Charles Naville
International Meeting for Applied Geoscience and Energy (IMAGE)
...) is the complex conjugate of the source signature, n j (ω) is the Fourier transform of flexural waves estimated using f -k filter, ε is a constant to avoid...
2024
Phase pilot recovery: A foundation for mitigating speckle scattering noise in seismic data
Akshika Rohatgi, Andrey Bakulin, Sergey Fomel
International Meeting for Applied Geoscience and Energy (IMAGE)
... multiplicative noise to seismic traces within the Fourier domain as, 𝑋! (𝜔) = 𝑆(𝜔) ∗ 𝑅! (𝜔), (1) where...
2024
Stochastic inversion based on Von Karman random medium prior model
Longdong Liu, Baoli Wang, Ying Lin, Guangzhi Zhang
International Meeting for Applied Geoscience and Energy (IMAGE)
... and . Where w t is the seismic wavelet. 1 d w t , and the 2 dt The autocorrelation function can be gotten by doing the Fourier inverse...
2024
Reducing Ambiguity in Source Rock Analyses
Son T. Dang, Carl H. Sondergeld, Chandra S. Rai
Unconventional Resources Technology Conference (URTEC)
.... S. T., Sondergeld. C. H. and Rai. C. S. 2015. Study of kerogen maturity using Fourier Transform Infrared Spectroscopy (FTIR) and Thermogravimatric Analysis...
2016
Understanding Source Rock Maturation from Generation and Microstructure Viewpoints
Son T. Dang, Carl H. Sondergeld, Chandra S. Rai
Unconventional Resources Technology Conference (URTEC)
.... International Journal of Coal Geology, Vol. 103, p. 26-31 Dang. S. T., Sondergeld. C. H., and Rai. C. S. 2015. Study of kerogen maturity using Fourier Transform...
2016
Get More from Your Core: Mix Surfactant Analysis with Sodium LignoSulfonate (SLS) Modification through Ricinoleic Acid Epoxidationwith Temperature, Time, and Reactant Composition with the Addition of Co-Surfactant to Reach an Interfacial Tension of 10-4
Muhammad Harun Al Rasyid, Fritz Mardohar, Wisnu Murti
Indonesian Petroleum Association
... the saponification process are obtained using Fourier Transform Infrared Spectroscopy (FTIR) analysis and compared with the FTIR spectrum of castor oil analyzed...
2015
Risks of Microseismic Fracture Mapping Mis-interpretation: Source-Dependent Sensitivity Induced by Surface Arrays Observational Bias
Pierre-Francois Roux
Unconventional Resources Technology Conference (URTEC)
... is estimated by taking the maximum of the inverse Fourier transform of its spectral expression [Aki and Richards, 2002]: ℱ𝑀0 𝑠̇ 𝐴 = max| | 4𝜋𝜌𝑉 ...
2017
Integrated Multi-Scale Reservoir Characterization: Wolfcamp Formation Midland Basin
Joel Walls, Mark Ver Hoeve, Anyela Morcote, Michael Foster
Unconventional Resources Technology Conference (URTEC)
... and used for digital rock analysis. Mineral composition was determined using Fourier transform infrared spectroscopy (FTIR). Clays, silicates...
2017
Intricate Seismic Time-Frequency Analysis in Kujung Patch Reef, Northeast Java Basin
Haryono Haryanto, Erik Yogapurana, Aditya Kusuma
Indonesian Petroleum Association
... Fourier Transform (STFT). STFT limits the time-frequency resolution by a pre-defined window length. In contrast, the CWT method does not require pre...
2016
Proceedings of the First International Conference on The New Basement Tectonics; Frontmatter
Robert A. Hodgson, S. Parker Gay, Jr., Janet Y. Benjamins
Utah Geological Association
... Distinctions Among Lineaments for the Mineral Explorationist R.W. Hodder and V.F. Hollister 453 52. An Application of Optical Fourier Analysis to the Study...
1974
Gas Hydrates Exploration Using Continuous Wavelet Transform Based on Spectral Decomposition
Hafidz Dezulfakar, Muhazzib, Yulia Nur Fajrina
Indonesian Petroleum Association
... s may be written as: 1 , √ Where Ψ* is the complex conjugation of the Fourier transform of the wavelet function. The length of the wavelet has...
2016
Nonlinear broadband seismic inversion for fluid mobility
Xuan Zheng, Zhaoyun Zong
International Meeting for Applied Geoscience and Energy (IMAGE)
..., respectively. C′ and E are the attenuation operator and Fourier operator of the complex-frequency-domain transform, respectively. And Z RI can...
2024
Noise Attenuation in Common Receiver Gather to Enhance S/N Ratio in Seismic Data
Dara Felisia A, Triswan Mardani Ade Surya, R.B.Fauzan Irshadibima, Firman Syaifuddin
Indonesian Petroleum Association
... to allow a different range of frequency. The application of frequency-filtering requires the data in frequency domain, which is achieved using the Fourier...
2017
Determining the Impact of Mineralogy Composition for Multiphase Flow Through Hydraulically Induced Fractures
Javier E. Santos, Maša Prodanović, Christopher J. Landry, Honggeun Jo
Unconventional Resources Technology Conference (URTEC)
... surface roughness. The fractal exponent (shown in bold) is used to define the amplitude of the Fourier component. The color map depicts normalized...
2018
Using Stage Level Microseismic Analysis to Gain Insight Into Fracture Efficiency and Completion Effectiveness
Iris Haihong Wang, Ryan Fairfield, James Courtier, Danny Gray, Shawn Lee
Unconventional Resources Technology Conference (URTEC)
... itself. The algorithm uses a non-uniform Fourier transform to approximate the actual empirical characteristic function. Figure 4 shows the algorithm...
2018
A New Insight of Hydrocarbon Potential in Stratigraphic Trap in the Keutapang Formation, North Sumatra Basin
Argya Hastubrata Basundara, Andi Mardianza, Humbang Purba, Ricky Andrian Tampubolon, Shidqi Anugrah Diria, Dedi Retno Haryanto, Herman Darman, Junita Trivanty
Indonesian Petroleum Association
... that the signal is multiplied with a function, wavelet, similar to the window function in the Discrete Fourier Transform (DFT), and the transform...
2018
NMR Signature and Quantification of Bitumen in Unconventional Source Rocks
Stacey Althaus, JinHong Chen, David Jacobi, Joshua Brothers
Unconventional Resources Technology Conference (URTEC)
..., and a recycle delay of 0.5 s. FTIR measurements. Kerogen samples were prepared for transmission micro Fourier transform infrared spectroscopy (µFTIR...
2019