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Showing 1,541 Results. Searched 200,636 documents.
Stromatolite Construction, Biofacies and Biomarkers in the Lower Cambrian Hawker Group, Arrowie Basin, South Australia
Bronwyn L. Teece, Simon C. George, Glenn A. Brock
Petroleum Exploration Society of Australia (PESA)
...). These microbialites were examined morphologically and geochemically through petrography, fourier transform infrared spectroscopy (FTIR), Raman spectroscopy, X-ray...
2018
Anisotropic elastic full-waveform inversion for crosswell seismic data for Wyoming CarbonSAFE project
Olga Podgornova, Shujaat Ali, Ting Lei, Peng Li, Matthew Johnson, Lu Lee, Zunsheng Jiao, J. Fred McLaughlin, Erik Borchardt, Lin Liang, Pierre Bettinelli, Joel Le Calvez
International Meeting for Applied Geoscience and Energy (IMAGE)
... tensor, the solution of the elastic equations is decomposed onto a set of azimuthal Fourier harmonics. Under axial symmetric assumptions, the wave...
2023
Three-Dimensional Depth Imaging of Seismic Data to Assess Subsurface Geology in Northern Utah and Southwestern Wyoming
Alvin K. Benson
Utah Geological Association
... by Fourier transform: Geophysics, v. 43, p. 23–48. Stolt, R.H., and Benson, A.K., 1986, Seismic Migration. Geophysical Press, Amsterdam, The Netherlands...
1999
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
Unsupervised frequency space domain deep learning framework for reconstructing 5D seismic data
Gui Chen, Yang Liu, Haoran Zhang, Mi Zhang, Yuhang Sun
International Meeting for Applied Geoscience and Energy (IMAGE)
... amplitude and phase spectra of the 4D frequency tensor that is derived from 5D data after the 1D fast Fourier transform, in an unsupervised manner...
2024
Noise logging of oil-water flow through an AICD
Peyman Moradi, Katie Walker, Limin Song, Bryce Campbell, Brian Seabrook, Ricardo Garza
International Meeting for Applied Geoscience and Energy (IMAGE)
..., the signals are subjected to spectral analysis using signal processing techniques. Specifically, we apply the Fourier transform to generate acoustic...
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
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
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
Harmonizing U.S. heat flow data with IHFC standards: A significant step toward enhancing geothermal energy exploration and development
Mohamed Shafik Khaled, Bissett Young, Aysegul Turan, Ken Wisian
International Meeting for Applied Geoscience and Energy (IMAGE)
... State Geologists (AASG)—aligning over 66,000 data entries with IHFC guidelines. Through this effort, we aimed to transform the U.S. heat flow database...
2024
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
Time-Lapse Microgravity to Monitoring Fluid Movement Estimation, Water Saturation, Pressure & Density Changes in Reservoir (Case Studies On Field TFQ, Sumatera)
Taufiq, Ermin Retnowati, Ahmad Zaenudin
Indonesian Petroleum Association
.... The filter in this study used the moving average method. To determine the width of the moving average window, Fourier transform process is required...
2015
AEM, Seismic and Power-lines: A hydrogeological case study in Peel, Western Australia
Andrew Pethick, Brett Harris, Olga Barron
Petroleum Exploration Society of Australia (PESA)
...” determined for each low-moment EM data block via a Fourier transformation. This is an estimate of the amplitude spectral density at 50 Hz. A major...
2019
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
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
Comprehensive Fracture Evaluation Using Wireline Borehole Imager and Array Acoustic Tools
Cahyo Nugroho, Gunawan Sucahyo, Adriaan Bal, Pipin Ariyanto, Wilfred Samosir, Edison Nadeak
Indonesian Petroleum Association
... clustering wavelength can be determined using signal processing techniques (e.g. a Fourier transform). However, it must be emphasized that with respect...
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
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