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Journal articles

Academic literature on the topic 'Analyse AVO'

Author: Grafiati

Published: 25 July 2024

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Journal articles on the topic "Analyse AVO"

1

Miles, D. R., G. Gassaway, L. Bennett, and R. Brown. "Three-component amplitude versus offset analysis." Exploration Geophysics 20, no. 2 (1989): 257. http://dx.doi.org/10.1071/eg989257.

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Three-component (3-C) amplitude versus offset (AVO) inversion is the AVO analysis of the three major energies in the seismic data, P-waves, S-waves and converted waves. For each type of energy the reflection coefficients at the boundary are a function of the contrast across the boundary in velocity, density and Poisson's ratio, and of the angle of incidence of the incoming wave. 3-C AVO analysis exploits these relationships to analyse the AVO changes in the P, S, and converted waves. 3-C AVO analysis is generally done on P, S, and converted wave data collected from a single source on 3-C geoph

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2

Qin, Xilin, Zhixian Gui, Fei Yang, and Yuanyuan Liu. "Anisotropic frequency-dependent characteristics of PP- and PS-waves in partially saturated double-porosity rocks." Journal of Geophysics and Engineering 18, no. 3 (2021): 355–68. http://dx.doi.org/10.1093/jge/gxab019.

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Abstract Most frequency-dependent AVO inversions are currently based on an approximate equation derived using an isotropic medium. However, actual reservoirs usually show anisotropy, such as shale reservoirs, tight sandstone reservoirs and fractured reservoirs. We propose a joint frequency-dependent AVO (JFAVO) inversion in an anisotropic medium based on a periodic layered double-porosity medium. This JFAVO will allow us to quantitatively study the influence of fluids on the dispersion of PP- and PS-wave velocities and anisotropic parameters. First, we used a double-porosity medium to analyse

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3

Qin, Xilin, Zhixian Gui, Fei Yang, Yuanyuan Liu, Wei Jin, and Jian Xiong. "Prediction of sweet spots in tight sandstone reservoirs based on anisotropic frequency-dependent AVO inversion." Journal of Geophysics and Engineering 18, no. 5 (2021): 664–80. http://dx.doi.org/10.1093/jge/gxab044.

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Abstract The frequency-dependent amplitude-versus-offset (FAVO) method has become a practical method for fluid detection in sand reservoirs. At present, most FAVO inversions are based on the assumption that reservoirs are isotropy, but the application effect is not satisfactory for fractured reservoirs. Hence, we analyse the frequency variation characteristics of anisotropy parameters in tight sandstone reservoirs based on a new petrophysical model, and propose a stepwise anisotropic FAVO inversion method to extract frequency-dependent attributes from prestack seismic field data. First, we com

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4

Wilson, J. "Much Ado About 'Something'." Analysis 71, no. 1 (2010): 172–88. http://dx.doi.org/10.1093/analys/anq087.

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5

Cahiers de Linguistique Asie Orient, Editor. "NGAN Yuk Han. Evolution des constructions "verbe + complément" du chinois bas-archaïque au chino is haut-médiéval (5ème avo J.-c. - 6ème sivcles): Analyse diachronique. Thèse de doctorat, sous la direction de Alain PEYRAUBE. Paris: Ecole des Hautes Etudes en Sciences Sociales. 2001. 294 pages." Cahiers de Linguistique Asie Orientale 31, no. 1 (2002): 117–35. http://dx.doi.org/10.1163/19606028-90000101.

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6

Zwart, C. Jan-Wouter. "Easy to (re)analyse." Linguistics in the Netherlands 29 (November 2, 2012): 147–58. http://dx.doi.org/10.1075/avt.29.12zwa.

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Within minimalism, we may assume derivations to involve subderivations, connected by the interface components dealing with sound and meaning (layered derivations). If so, complex adjectival constructions involving predicates like tough/easy (as in John is easy to please) receive a natural account in terms of reanalysis taking place at these interface components, turning a complex adjectival construction into a simplex adjective which can be merged in predicative or attributive position in the next derivation layer. Arguments against reanalysis address earlier, more complicated conceptions of r

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7

Meracheva, Gergana, Efrosima Zaneva-Dobranova, and Nikolay Hristov. "Seismic characterization analyses of the Bulgarian Black Sea shelf for assessment of reservoir properties." Geologica Balcanica 51, no. 3 (2022): 29–42. http://dx.doi.org/10.52321/geolbalc.51.3.29.

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In the Bulgarian Black Sea shelf, several gas fields have been discovered in Maastrichtian–Paleocene sediments to date. In this study, amplitude versus offset analysis (AVO) was carried out, and the extended elastic impedance (EEI) was also used, to predict fluid and lithology properties. Thus, in these special cases, AVO (or reflection angle) can significantly de-risk the existing Paleocene prospects and allow to focus on the Miocene–Oligocene successions, where some prospects have also been identified. By examining the variations in angle amplitude (or offset), it is possible to unravel lith

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8

Vejseli, Marta. "Beihilferechtliche Rahmenbedingungen für den Breitbandausbau – Eine Analyse der AGVO." Zeitschrift für Beihilfenrecht 8, no. 1 (2016): 3–9. http://dx.doi.org/10.33196/brz201601000301.

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9

Asaka, Michinori. "AVO inversion using pseudoisotropic elastic properties." Leading Edge 40, no. 1 (2021): 52–59. http://dx.doi.org/10.1190/tle40010052.1.

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Amplitude variation with offset (AVO) inversion of an anisotropic data set is a challenging task. Nonnegligible differences in the anisotropy parameters between the various lithologies make the seismic data AVO response completely different from the isotropic synthetic seismogram. In this case, it is difficult to invert for VP/VS and density consistent with well-log data. AVO inversion using pseudoisotropic elastic properties is a practical solution to this problem. Verification of this method was performed using data from an offshore Western Australia field. It was found that wavelet extracti

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10

Diefenhardt, Markus, Daniel Martin, Maximilian Fleischmann, et al. "Overall Survival After Treatment Failure Among Patients With Rectal Cancer." JAMA Network Open 6, no. 10 (2023): e2340256. http://dx.doi.org/10.1001/jamanetworkopen.2023.40256.

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ImportanceOncologic outcomes among patients with rectal cancer after developing local recurrence and/or distant metastases remain poorly studied.ObjectiveTo analyze the trend of overall survival after treatment failure for patients with rectal cancer within three consecutive phase 2 or 3 trials of the German Rectal Cancer Study Group.Design, Setting, and ParticipantsThis cohort study is a post hoc analysis of 3 randomized phase 2 or 3 trials (CAO/ARO/AIO-94, -04, and -12 trials, conducted in Germany) that included 1948 patients with locally advanced rectal adenocarcinoma. The CAO/ARO/AIO-94 tr

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