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Keywords: differentiation
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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-2021-3594791
... and extract useful information has been an unknown. If this is not generally true, when would the active area of study. Among existing approaches, joint recovered physical property relationships become inversion followed with geology differentiation has shown unrecoverable (or, unreliable)? Therefore, our...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3586619
... Geology differentiation aims to spatially identify subsurface geologic units via integrating prior geologic information and multiple physical property models obtained from joint (or, separate) inversions. However, uncertainty analysis of geology differentiation results is still largely under...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3428385
... geophysical data, and to further our understanding of the undercover geology, we have performed both separate and joint inversions of magnetic and gravity gradient data to obtain 3D density contrast and 3D susceptibility models, based on which we carried out geology differentiation. Based on separately...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3428427
... inversion and geology differentiation. Joint inversion allows physical property models to constrain each other at the inversion stage, resulting in structurally similar models and enhanced correlations between inverted physical property values. Geology differentiation makes use of the jointly inverted...
Proceedings Papers

Paper presented at the 2016 SEG International Exposition and Annual Meeting, October 16–21, 2016
Paper Number: SEG-2016-13957163
... directions could distinguish between different causative bodies. Consequently, 3D magnetization inversion enables the complete utilization of information content in magnetic anomaly in the presence of remanent magnetization and, thereby, assist in geology differentiation. In this presentation, we apply...
Proceedings Papers

Paper presented at the 2015 SEG Annual Meeting, October 18–23, 2015
Paper Number: SEG-2015-5928819
... such as electrical conductivity, chargeability, and magnetic susceptibility, which provide the potential for lithology differentiation and direct identification of ore bodies through geophysical inversions. This work shows the results of modeling and interpretation of magnetic and resistivity of an IOCG deposit...
Proceedings Papers

Paper presented at the 2014 SEG Annual Meeting, October 26–31, 2014
Paper Number: SEG-2014-0917
... advances. approximation stencil basis function node finite difference radial basis function polynomial support rbf-fd ac solution differentiation accuracy artificial intelligence seg denver 2014 interface reservoir characterization machine learning ps solution seismic modeling rbf-fd...
Proceedings Papers

Paper presented at the 2014 SEG Annual Meeting, October 26–31, 2014
Paper Number: SEG-2014-0978
... by inverting low frequency seismic data. We designed and investigated two algorithms for this new method, one is the so-called amplitude-frequency differentiation (AFD) beat inversion, and the other is the phase-frequency differentiation (PFD) beat inversion. The AFD algorithm works for transmission seismic...
Proceedings Papers

Paper presented at the 2012 SEG Annual Meeting, November 4–9, 2012
Paper Number: SEG-2012-1378
... SUMMARY The induced polarization (IP) method is an established technique in mining geophysics. One of the major challenges facing mining geophysicists is the ability to differentiate between different lithologies based on geophysical data such as IP data. In this paper, we present a study...
Proceedings Papers

Paper presented at the 2011 SEG Annual Meeting, September 18–23, 2011
Paper Number: SEG-2011-3152
... reservoir characterization time-reversal method checkpoint gradient computation differentiation algorithm simulator griewank forward simulation upstream oil & gas Time-Reversal Methods For RTM And FWI Time-Reversal Methods For RTM And FWI John E. Anderson*, Lijian Tan, Exxon Mobil Upstream...
Proceedings Papers

Paper presented at the 2004 SEG Annual Meeting, October 10–15, 2004
Paper Number: SEG-2004-0696
... and correlation between the output signals of the reference induction coils and the derivatives of the SQUID signals in TDEM field tests. tdem data acquisition system magnetometer derivative mineral exploration conductive target data acquisition system differentiation squitem coil data squid data...
Proceedings Papers

Paper presented at the 2000 SEG Annual Meeting, August 6–11, 2000
Paper Number: SEG-2000-0442
... Summary This paper presents a finite element method which gives fast and accurate numerical approximations to magneto-telluric data over two-dimensional earth models. The method incorporates an accurate differentiation scheme to find the field component perpendicular to strike...
Proceedings Papers

Paper presented at the 1997 SEG Annual Meeting, November 2–7, 1997
Paper Number: SEG-1997-0830
... characterization differentiation selection seismic scale borehole data Reservoir Characterization 2: Reservoir Property Determination Wednesday a.m., Nov. 5 RC 2.1 Comparison of seismic and borehole data at the same scale F: and A.J. Berkhout, Centre of Technical Geoscience, Delft University of Technology...
Proceedings Papers

Paper presented at the 1991 SEG Annual Meeting, November 10–14, 1991
Paper Number: SEG-1991-1595
... ABSTRACT No preview is available for this paper. wave equation equation wavefront propagation differentiation new equation plane wave propagation upstream oil & gas singularity constant density media christopher liner acoustic wave equation feshbach wavefield reservoir...
Proceedings Papers

Paper presented at the 1985 SEG Annual Meeting, October 6–10, 1985
Paper Number: SEG-1985-0542
... ABSTRACT No preview is available for this paper. algorithm arithmetic operation accuracy computation geophysics modeling fourier method wave equation migration upstream oil & gas operation numerical differentiation frequency differentiator application reservoir...

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