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Keywords: noise source
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Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3583704
... Ambient noise interferometry is based on the assumption of normally distributed noise sources, which is often hard to be satisfied in urban areas where local noise sources may be dominant in specific directions and times. Hence, understanding the characteristics of urban seismic noises...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3594981
... in all our numerical experiments. artificial intelligence machine learning deep learning test model reservoir characterization upstream oil & gas interferometry exploration geophysicist 10 seismic interferometry noise reflection noise source neural network shot gather wapenaar...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3585407
... for subsurface velocity model. With ambient noise wavefield propagation direction and the amplitude information recorded by the two legs of a near L-shaped DAS array, we derive a ratio of Rayleigh to Love waves in the DAS ambient noise recordings. In the synthetic examples, we assume the ambient noise sources...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3419933
... Session Start Time: 1:50 PM Presentation Time: 2:40 PM Location: Poster Station 12 Presentation Type: Poster urban environment exploration geophysicist 10 high frequency reservoir characterization rayleigh wave reflection p-wave noise source upstream oil & gas source location seg...
Proceedings Papers

Paper presented at the 2018 SEG International Exposition and Annual Meeting, October 14–19, 2018
Paper Number: SEG-2018-2996549
... ABSTRACT In passive seismic exploration, a noise source is simply described as a source producing stochastic vibration continuously. The first breaks in the record are generally unpickable. Hence, it’s more appropriate to use the time reverse imaging (TRI) for locating noise source rather than...
Proceedings Papers

Paper presented at the 2017 SEG International Exposition and Annual Meeting, September 24–29, 2017
Paper Number: SEG-2017-17774369
... ABSTRACT Near-surface imaging with ambient noise has grown into an increasingly common tool over the past decade thanks to the virtual source function method. However, if non-ideal noise sources are present, experts must manually analyze the noise to look for any issues they suspect...
Proceedings Papers

Paper presented at the 2017 SEG International Exposition and Annual Meeting, September 24–29, 2017
Paper Number: SEG-2017-17681951
... and Rayleigh wave phase velocities of possible noise sources is of utmost importance for accurate computation of Newtonian noise, which appears to be the ultimate low frequency limit for ground based gravitational wave detectors. For this purpose, a seismic array was designed that would ensure correct...
Proceedings Papers

Paper presented at the 2017 SEG International Exposition and Annual Meeting, September 24–29, 2017
Paper Number: SEG-2017-17587813
.... Crosswell ANSI is found to be plausible, but the method of analysis using cross-correlation proves to be the limiting factor in this study. That is, cross-correlation is not an effective method for stacking of coherent reflection information if part of the crosswell array is close to the noise sources...
Proceedings Papers

Paper presented at the 2017 SEG International Exposition and Annual Meeting, September 24–29, 2017
Paper Number: SEG-2017-17641902
... noise. Presentation Date: Tuesday, September 26, 2017 Start Time: 3:55 PM Location: Exhibit Hall C/D Presentation Type: POSTER reservoir characterization seg seg international exposition seismic interferometry ketzin cross coherence body wave noise noise source germany co2...
Proceedings Papers

Paper presented at the 2016 SEG International Exposition and Annual Meeting, October 16–21, 2016
Paper Number: SEG-2016-13845441
... the subjectivity of the data QC process. We test the methodology on a field dataset from an underground potash mine and several synthetic datasets. The results of these tests show that the methodology is capable of identifying and characterizing highly noise contaminated data from a variety of noise sources...
Proceedings Papers

Paper presented at the 2016 SEG International Exposition and Annual Meeting, October 16–21, 2016
Paper Number: SEG-2016-13678078
... ABSTRACT This numerical modeling study examines the use of seismic interferometry to retrieve weak seismic reflections from background noise, a form of passive monitoring. Assuming we seek reflections from deep noise sources, representing either teleseismic events or local events as expected...
Proceedings Papers

Paper presented at the 2016 SEG International Exposition and Annual Meeting, October 16–21, 2016
Paper Number: SEG-2016-13968682
... ABSTRACT The sea layer is an effective medium to transmit sound waves. The acoustic signal from noise sources can be detected at hydrophones from tens to hundreds of kilometers away at any depth. Noise level is not monotonically distributed in the water column. Contrary to the common belief...
Proceedings Papers

Paper presented at the 2016 SEG International Exposition and Annual Meeting, October 16–21, 2016
Paper Number: SEG-2016-13963845
... with the violation of the MT plane-wave assumption by coherent cultural noise sources, like regional power lines, is discussed in many publications and commonly compared to the conceptually similar near-field distortion of controlled source audio magnetotellurics (CSAMT). However, little attention has been given...
Proceedings Papers

Paper presented at the 2015 SEG Annual Meeting, October 18–23, 2015
Paper Number: SEG-2015-6026198
.... ecosystem reference list cetsound acoustic habitat human activity risk assessment risk management chronic noise soundmap recommendation contribution individual animal us government noise invertebrate species distribution fishery management council noise source noaa soundscape Can you...
Proceedings Papers

Paper presented at the 2015 SEG Annual Meeting, October 18–23, 2015
Paper Number: SEG-2015-5906063
... weeks) in order to create usable shot gathers. To overcome this long recording time we test the possibility of using a controlled noise source (CNS) to create the virtual shot gathers. In our test example we employ a wooden beam dragged behind a truck that circles the array for 150 minutes...
Proceedings Papers

Paper presented at the 2015 SEG Annual Meeting, October 18–23, 2015
Paper Number: SEG-2015-5870761
... noise noise reduction attenuation upstream oil & gas microseismic monitoring project modeling magnitude detectable acquisition magnitude detectable event knowledge intrinsic attenuation noise source geometry monitoring project sensitivity analysis microseismic surface...
Proceedings Papers

Paper presented at the 2014 SEG Annual Meeting, October 26–31, 2014
Paper Number: SEG-2014-1363
... frequency range correspond frequency body wave super-source gather azimuth noise source noise cross-correlation highway virtual super-source gather ambient noise reservoir characterization noise long beach patch size body-wave energy upstream oil & gas virtual source gather virtual...
Proceedings Papers

Paper presented at the 2014 SEG Annual Meeting, October 26–31, 2014
Paper Number: SEG-2014-0819
... cheraghi seismic data receiver location ambient noise seg denver 2014 seismic interferometry mineral exploration upstream oil & gas interferometry reservoir characterization noise source deposit active source survey virtual shot gather canada new tool Summary A test...
Proceedings Papers

Paper presented at the 2013 SEG Annual Meeting, September 22–27, 2013
Paper Number: SEG-2013-1396
.... This is particularly important as many noise sources are present in the monitored area, not only at the fraccing pumps whose noise is present only on about 1% of the network. Moreover, the patches are independent arrays. This indicates that non-permit areas can easily be avoided, and also that low-noise areas can...
Proceedings Papers

Paper presented at the 2012 SEG Annual Meeting, November 4–9, 2012
Paper Number: SEG-2012-1462
... progression point source modeling cross-correlation passive source representation excitation assumption equation 4 seismic interferometry noise source geophysics jeroen tromp excitation pattern spatial noise draganov reservoir characterization noise excitation procedure...

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