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Keywords: subtraction
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Proceedings Papers

Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 26–29, 2024
Paper Number: SEG-2024-4101654
... wavefield reservoir characterization subtraction separation petroleum geology non-compressional energy expanded abstract adaptive subtraction interface wave hydrophone american association accelerometer geologist geological subdiscipline rotational component exploration geophysicist...
Proceedings Papers

Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 26–29, 2024
Paper Number: SEG-2024-4099591
... with separate background and scattering velocities together with a base-of-salt reflectivity is used to generate kinematically accurate data domain noise models of the PSPP and PPSP arrivals. These are subsequently adaptively matched to input shots and subtracted. This workflow is demonstrated on a one-sided...
Proceedings Papers

Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 27–September 1, 2023
Paper Number: SEG-2023-3911245
... of Marchenko-based internal multiple removal strategies. One focuses on internal multiple prediction (IMP) based on Marchenko redatuming and seismic interferometry (SI). The second method emphasizes primary reflection retrieval (PRR) by capturing primary reflections without adaptive subtraction. It is derived...
Proceedings Papers

Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 27–September 1, 2023
Paper Number: SEG-2023-3908102
... geology geological subdiscipline exploration geophysicist nigeria government international american association upstream oil & gas reservoir characterization applied geoscience subtraction perturbation expanded abstract energy 10 alignment society regularization artefact fdr Joint...
Proceedings Papers

Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 27–September 1, 2023
Paper Number: SEG-2023-3907380
... that the proposed approach removes internal multiples even when it is not possible to use the optimum SF, which can be an impediment to applying MME in real data. brazil government mme geophysics american association geology optimal sf reflection applied geoscience subtraction santos upstream oil...
Proceedings Papers

Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 28–September 1, 2022
Paper Number: SEG-2022-3749809
.... modeling american association geology society upstream oil & gas international wavefield modeling fwmod reservoir characterization generator applied geoscience reflectivity inversion fwmod reflectivity inversion verschuur subtraction exploration geophysicist reflectivity inversion...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3584041
... Surface-related multiple elimination remains one of the most robust primary estimation approaches for decades, in which the adaptive subtraction step is a non-trivial task. Due to imperfections in the made assumptions during prediction, the perfect adaptive subtraction is a highly non-linear...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3584163
... abstract noise broadband acquisition reservoir characterization applied geoscience subtraction interpretation noise attenuation broadband data wavelet Broadband data from acquisition to interpretation a case study from Prudhoe Bay, Alaska Nate Johnson*, Seth Riseman, Zhanna Jackson...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3594452
...Adaptive subtraction on an f-k-partitioned wavefield Ahmed Rushdy*, Jing Wu, Zhiming Wu, Cintia Lapilli, Vasudha Govindan, Schlumberger Summary 1. Decomposition enables an intuitive t-x filter design We present an f-k-partitioning-based adaptive subtraction proportional to the t-x wavelength...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3594201
... examples show that the mod- and well-understood amplitude. Figure 1(c) shows the multi- i ed IMA method can remove effectively internal multiples in ple removal by using adaptive subtraction. After multiple re- the target reservoir and is better than other method. In sum, the moval, we can see that only...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3594321
... (shale and sandstone) prediction of the coherent multiples followed by adaptive present in the Tertiary sequence behaves as a strong subtraction from the recorded data (Rushdy et al., 2017). impedance trap, resulting in a mixture of complex short- period reverberations and strong seismic multiple Results...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3580563
... To take advantage of sparsity, adaptive subtraction can be implemented in the curvelet domain. Unlike time-spacedomain adaptive subtraction, curvelet-domain adaptive subtraction separates primaries and multiples simultaneously by gradually promoting their sparseness. In order to achieve optimum...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3573546
... algorithms to production. In addition, the prediction method based on wave equations calls for the subtraction of multiples from original data. In the process of subtraction, improper selection of the algorithm is likely to cause damages/tolerances to the primary wave. Moreover, the filtering method is also...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3402490
... in eastern Finland. By applying seismic interferometry to the active-source data, we retrieve dominant surface waves between receivers that we use for surface-wave estimations. We then use this result and adaptively subtract the estimated surface waves from the original data. After a simple processing...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3426847
... internal multiple subtraction seg international exposition internal multiple prediction field data multiple prediction fictitious horizon van der neut generator equation reflection exploration geophysicist 10 wapenaar Internal multiples prediction with separation of overburden and target...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3426132
... data Shelf vulnerable to multiple contamination. The strong set indicates that the multiple subtraction was sub-optimal, multiple energy in the data has been a significant barrier to mainly due to the inaccuracy of the multiple prediction. reducing exploration risk. As such, multiple attenuation...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3216021
... ABSTRACT A very common geophysical task is the optimum subtraction of a noise model (e.g., multiples) from input data that is assumed to be composed of both signal and noise. If the noise model is accurate it may be removed by direct subtraction. However, noise models are typically not perfect...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3216600
... multiple attenuation (IMA) remains low due to various practical challenges, such as inaccuracy in prediction, difficulty in subtraction, and prohibitively high compute cost. We propose a workflow with a few strategies to improve the applicability of IMA. Using a 3D field data example, we demonstrate...

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