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Keywords: elastic impedance
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Proceedings Papers
Lei Zhang, Ivan Salazar, Janet Ravelo, Ricardo Castrejon, Raul Ysaccis, Edgar Ramon Hernandez Reyes, Armando Heras Sanjuanico
Publisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 28–September 1, 2022
Paper Number: SEG-2022-3751987
... to apply a wide variety of geophysical techniques. Classic methods like AVO reconnaissance and analysis (Castagna et al., 1997), band limited inversion, and extended elastic impedance (EEI) (Whitcombe et al., 2002) were applied and in the most challenging places innovative algorithms like the litho-petro...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3590593
... parameters of carbonate reservoirs. To solve these problems, a new elastic-impedance-based nonlinear simultaneous inversion method under the framework of Bayesian theory is first proposed. It integrates the differential effective medium model of multiple-porosity rock, Gasmann equation, AVO theory, Bayesian...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3594223
... reservoir which is called elastic impedance. He expounded the functions of P-wave velocity, S-wave velocity, density as well as angle of the elastic impedance curve (Equation 1). The P-wave impedance is only a special elastic impedance when the angle of incident is 0 degree. EI = 12821 42 (1) In which k...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3424581
...: Poster Station 9 Presentation Type: Poster reservoir characterization p-wave impedance input data seg international exposition upstream oil & gas elastic impedance exploration geophysicist 10 algorithm machine learning objective function stability stable rock-physic inversion...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3215341
... ABSTRACT In this paper, the Fourier Coefficients (FCs) expression of azimuthally anisotropic elastic impedance (EI) equation is derived, a three-step workflow is proposed to simultaneously estimate P-wave impedance, S-wave impedance and fracture weaknesses parameters. The first step...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3211226
... international exposition case study acoustic impedance elastic impedance chi angle annual meeting impedance seismic inversion shale water saturation discrimination Moubarak , H. , T. Al-Rashid , and Z. Ren , 2018a , Seismic facies classification and rock typing to better...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3212531
... with a stress-sensitive parameter. We then derive a linearized reflection coefficient in terms of a stress-parameter reflectivity, and re-express it in terms of elastic impedance (EI). An amplitude-variation-with-offset (AVO) inversion workflow is set up, in which the seismic data are transformed to EI, after...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3212559
... in elastic impedance, or QdEI, which is primarily affected by the dry fracture weaknesses and the new indicator. An inversion approach can be set up based on the QdEI which through differences in seismic amplitudes with frequency produces estimates of these weaknesses and the indicator. In synthetic...
Proceedings Papers
Prestack frequency-dependent viscoelastic fluid factor inversion and application in Shengli Oilfield
Publisher: Society of Exploration Geophysicists
Paper presented at the 2018 SEG International Exposition and Annual Meeting, October 14–19, 2018
Paper Number: SEG-2018-2991136
... ABSTRACT Based on the characteristic equation of pre-stack data frequency variation response, according to the relationship between elastic impedance and reflection coefficient, frequency-dependent viscoelastic fluid factor can be derived, so does the relationship of elastic impedance...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the 2018 SEG International Exposition and Annual Meeting, October 14–19, 2018
Paper Number: SEG-2018-2998479
... ABSTRACT Elastic parameters inversion from elastic impedance has been widely used. It is a typical nonlinear mapping relationship between elastic parameters and elastic impedance, which can lead to inaccurate results inversion with the common error fitting method. For the prestack seismic...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the 2018 SEG International Exposition and Annual Meeting, October 14–19, 2018
Paper Number: SEG-2018-2983903
... ABSTRACT It is necessary to estimate the elastic impedance accurately for three-parameter inversion. However, the elastic impedance can be calculated from the reflectivity with the recursive inversion and the generalized linear inversion (GLI) separately. It has been demonstrated that GLI can...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the 2018 SEG International Exposition and Annual Meeting, October 14–19, 2018
Paper Number: SEG-2018-2994484
... by subsurface lithologies and geofluid facies, which consist of several Gaussian probability components with different means and covariances. With the assumption of Gaussian mixture a priori, one improved prestack EVA inversion (elastic impedance variation with angle) conditioned by seismic and well data...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the 2017 SEG International Exposition and Annual Meeting, September 24–29, 2017
Paper Number: SEG-2017-17653754
... . Chen , H. , G. Zhang , J. Chen , and X. Yin , 2014b , Fracture filling fluids identification using azimuthally elastic impedance based on rock physics : Journal of Applied Geophysics , 110 , 98 – 105 , 10.1016/j.jappgeo.2014.09.006 . Connolly , P...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the 2017 SEG International Exposition and Annual Meeting, September 24–29, 2017
Paper Number: SEG-2017-17670710
...: Wednesday, September 27, 2017 Start Time: 10:35 AM Location: Exhibit Hall C/D Presentation Type: POSTER fatti s-wave impedance upstream oil & gas impedance annual meeting elastic impedance inversion scheme p-and s-wave impedance seg seg international exposition reservoir...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the 2017 SEG International Exposition and Annual Meeting, September 24–29, 2017
Paper Number: SEG-2017-17679284
... ABSTRACT In this study I present a new approach to the interpretation of the extended elastic impedance () method (Whitcombe et al., 2002) which incorporates Biot-Gassmann poroelastic theory. I call this method extended poroelastic impedance (). The main advantage of the method...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the 2016 SEG International Exposition and Annual Meeting, October 16–21, 2016
Paper Number: SEG-2016-13861277
...Stochastic inversion of elastic impedance based on simulated annealing genetic algorithm Chanjuan Liu * , Xingyao Yin, and Baoli Wang, China University of Petroleum (East China) Summary The aim of seismic inversion is to estimate the subsurface elastic properties. As one of the many inversion...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the 2016 SEG International Exposition and Annual Meeting, October 16–21, 2016
Paper Number: SEG-2016-13966892
... workflow based on the elastic impedance concept is introduced. The new workflow utilizes well log-derived rock physics relationships defined for each facies and a lithology/facies model to highly constrain the inversion space, thereby reducing inversion run-time and regularizing the problem in the presence...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the 2016 SEG International Exposition and Annual Meeting, October 16–21, 2016
Paper Number: SEG-2016-13850446
... ABSTRACT Seismic methods either post-stack or pre-stack have been commonly used to characterize the reservoir. The common used rock physics attributes to help for screening reservoir sandstone hydrocarbon is Extended Elastic Impedance (EEI). However, the EEI trends are close to linear, whereas...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the 2015 SEG Annual Meeting, October 18–23, 2015
Paper Number: SEG-2015-5851566
... equations. Such a density determination is dependent on the quality of the seismic data, and is not considered very reliable. We discuss a novel way of estimating density through the application of extended elastic impedance without the need for long-offset seismic data. The method Elastic impedance (EI...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the 2015 SEG Annual Meeting, October 18–23, 2015
Paper Number: SEG-2015-5897578
... to extract P-wave velocity, S-wave velocity and density from elastic impedance with Gaussian distribution noise or uniform distribution noise. Numerical test shows that the accumulation method can give us a little more accurate and stable P-velocity, S-velocity and density than least squares method in both...
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