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Showing 17,839 Results. Searched 196,369 documents.
Abstract: Two-stage Blind Deconvolution; #90187 (2014)
Mafijul Islam Bhuiyan and Mauricio D. Sacchi
Search and Discovery.com
... The seismic trace d[n] can be expressed as the convolution of the reflectivity sequence r[n] and a wavelet w[n] plus a noise contamination term e[n...
2014
Integration of Vertical Seismic, Surface Seismic, and Well-log Data at the Mallik 2L-38 Gas-hydrate Research Well, Mackenzie Delta, Canada
M. W. Lee, T. S. Collett, W. F. Agena
AAPG Special Volumes
...) is the amplitude spectrum at distance Ri, f is the linear frequency, i is the attenuation coefficient (i = if), , is an attenuation constant, and Ao...
2009
Abstract: Interferometric Assessment of Clamping Quality of Borehole Geophones; #90224 (2015)
Yoones Vaezi and Mirko van der Baan
Search and Discovery.com
... electromechanical or magnetic devices in order for them to be in close contact with the surrounding formations so as to record the background noise...
2015
Applications of Broadband Land Seismology; #70253 (2017)
Zhang Ruijie
Search and Discovery.com
... Phase proc. HD proc. Azimuthal velocity Field statics 2nd velocity analysis self-adaptive noise attenuation OVT sorting Well-driven TAR OVT...
2017
The deblending processing of multi-well 3D DAS-VSP data in the Middle East
Fei Li, Gang Yu, Haibo Liu, Jiawen Song, Yanbin Zhang, Yuanzhong Chen, Tiankui Yin, Jianxin Han, Qingfeng Li
International Meeting for Applied Geoscience and Energy (IMAGE)
... of the adjacent shot interference on the non-shot gathers. Hoover, Sublett et al. (2010) proposed random noise attenuation (RNA) method to suppress...
2023
Specialized processing of a massive distributed acoustic sensing (DAS) 3D VSP in a producing well
Ali Sayed, Francesca Twynam, Ran Bachrach, Philippe Caprioli, Marcus Holloway, Qingsong Li, Reetam Biswas, Daniel Tebo, Sam Buist
International Meeting for Applied Geoscience and Energy (IMAGE)
... by applying median filters in the frequency domain. DAS common noise manifests as coherent linear arrivals across the entire array at infinite...
2023
Inference of Induced Fracture Geometries Using Fiber-Optic Distributed Strain Sensing in Hydraulic Fracture Test Site 2
Stephen Bourne, Kees Hindriks, Alexei A. Savitski, Gustavo A. Ugueto, Magdalena Wojtaszek
Unconventional Resources Technology Conference (URTEC)
... of fracture apertures, ̃(𝑡, 𝑧), by deconvolution of simulated vertical strain observations, 𝜀 𝑧𝑧 (??, 𝑧), with 1% random uncorrelated 𝑎 noise, and offset from the ...
2021
Australian Insights into Streamer Technology Innovations
Andrew Long
Petroleum Exploration Society of Australia (PESA)
.... reducing weather, swell and operational down-going pressu re wavefield, reflected with The technology described here uses an noise effects recorded...
2009
Unlocking Value from Vintage Seismic Processing - Pre-stack Conditioning and Inversion in the Eagle Ford Shale
Andrew Munoz, Bill Shea
Unconventional Resources Technology Conference (URTEC)
... noise, attenuation, fold inconsistency, and residual migration artifacts. While data can be improved with full reprocessing, in today's low-price...
2020
Random Noise Removal of Seismic Attribute Data via Complex-valued Wavelets
Search and Discovery.com
N/A
Towards Improved Quality and Accuracy of Deeper Target Images on Land Data
Afiq Mokhtar, Riaz Alai, Christopher Lee Slind, Poetri Monalia, Rizki Krishna Pratama
Indonesian Petroleum Association
... steps such as near-surface static correction through refraction static tomography, spike attenuation, ground roll, linear noise and surface wave...
2022
Synthetic Stratigraphy with a Stochastic Diffusion Model of Fluvial Sedimentation
Jon D. Pelletier, Donald L. Turcotte
Journal of Sedimentary Research (SEPM)
... uncorrelated then the power spectrum is constant as a function of wave number (the reciprocal of the wavelength), i.e., white noise. If adjacent values...
1997
Abstract: Strong Noise Removal and Replacement on Seismic Data; #90174 (2014)
Patrick Butler
Search and Discovery.com
..., prestack migration and other linear processes. The root n cancellation for Gaussian noise may just not be sufficient. To address this we created a nonlinear...
2014
Observations of geophone spurious resonance
Steve Hearn, Shaun Strong, Andrew Kinmont
Petroleum Exploration Society of Australia (PESA)
... the corresponding average spectrum, in dB and linear formats. The latter is the natural domain for noise subtraction, and is also convenient...
2019
Abstract: Converted Wave Receiver Statics from First Break Mode Conversions; #90171 (2013)
Kristof De Meersman and Marcelo Roizman
Search and Discovery.com
... 427. The data has been LMO corrected using the P-wave first break pick times. Some mild noise attenuation was also applied as well as a 100 ms bulk...
2013
Abstract: Converted Wave Receiver Statics from First Break Mode Conversions; #90171 (2013)
Kristof De Meersman and Marcelo Roizman
Search and Discovery.com
... 427. The data has been LMO corrected using the P-wave first break pick times. Some mild noise attenuation was also applied as well as a 100 ms bulk...
2013
Abstract: Statics Preserving Sparse Radon Transform; #90224 (2015)
Nasser Kazemi
Search and Discovery.com
... problem and solved via alternating minimization method. Real data examples used to test the performance of the proposed method in multiple and noise...
2015
A novel and low-cost seismic acquisition system consisting of permanent controlled linear vibratory sources and new autonomous seismic sensors for CCS/CCUS site characterization, plume front mapping, and real-time seismicity monitoring
Siwei Li, Nicholas Brooks, Tianrun Chen, Xinding Fang, George Knapo, Howard Wilkinson
International Meeting for Applied Geoscience and Energy (IMAGE)
... investigated varying frequencies to identify the optimum penetration, monitored for unwanted noise and assessed signal attenuation vs. distance. The first test...
2023
Abstract: Post-stack Inversion of the Hussar Low Frequency Seismic Data; #90187 (2014)
Patricia E. Gavotti, Don C. Lawton, Gary F. Margrave, and J. Helen Isaac
Search and Discovery.com
... is the noise and * denotes convolution. Noise is assumed to be random and uncorrelated with the signal. Reflectivity is defined as the contrast...
2014
Parsimonious Deconvolution
Jon F. Claerbout
Southeast Asia Petroleum Exploration Society (SEAPEX)
... high frequency noise. Varimax deconvolution decreases the noise. More realistic estimated filters bτ and further noise reduction can be achieved...
1980
Abstract: Estimation of Q: a Comparison of Different Computational Methods; #90187 (2014)
Peng Cheng and Gary F. Margrave
Search and Discovery.com
... demonstrate that the time-domain match-filter method is more robust to noise and more suitable for application to reflection data than other three...
2014
Abstract: Frequency-dependent Elastic Moduli and Attenuation of Sandstone and Carbonate Rocks; #91204 (2023)
Andika Perbawa, Thomas Finkbeiner, Salma Alsinan, Juan Carlos Santamarina
Search and Discovery.com
... carbonate specimens. Results reveal: 1) the attenuation and stiffness in the resonance column test reach an asymptote or linear viscoelastic behavior...
2023
Hybridised Weighted Boot-Strap Differential Semblance
Hamish Wilson, Lutz Gross
Petroleum Exploration Society of Australia (PESA)
... and real trace gathers. The test results show that our approach significantly improves the resolution and noise attenuation in the semblance spectra...
2016
Abstracts: Application of FX Singular Spectrum Analysis on Structural Data; #90173 (2015)
Alexander Falkovskiy, Elvis Floreani, Gerry Schlosser
Search and Discovery.com
... linear events of constant dips and random noise. Therefore, FX filtering does not work well when the dip varies within the filter width or when...
2015
Thin Layer Imaging by Wavelet Transform Enhancement
Randy Condronegoro, Woro Sutjiningsih, Herlan Setiadi, Khairul Ummah, Dythia Prayudhatama
Indonesian Petroleum Association
... be associated with linear events in the data, thus, reduction of the lower rank amplitudes can be related to attenuating random noise. Recent...
2013