1-20 of 26568 Search Results for

Complex coefficient of reflection

Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Proceedings Papers

Paper presented at the SPWLA 62nd Annual Logging Symposium, May 17–20, 2021
Paper Number: SPWLA-2021-0058
... IN COMPLEX ROCKS FOR IMPROVED INTERPRETATION OF SONIC AND ULTRASONIC LOGS Daria Olszowska, Gabriel Gallardo-Giozza, and Carlos Torres-Verdín, The University of Texas at Austin Copyright 2021, held jointly by the Society of Petrophysicists and Well Log properties of homogeneous and layered rock samples...
Proceedings Papers

Paper presented at the 2009 SEG Annual Meeting, October 25–30, 2009
Paper Number: SEG-2009-2060
... the layer and the non-attenuating medium. We use the analytical interlayer-flow model, which is based on Biot’s theory of poroelasticity, to model attenuation in the layer. The resulting complex velocity for the attenuating layer is used in the analytical solution for the complex reflection coefficient...
Proceedings Papers

Paper presented at the 2016 SEG International Exposition and Annual Meeting, October 16–21, 2016
Paper Number: SEG-2016-13967757
... Density on P-wave Reflection Coefficients for Shale/Sand Model with HTI Anisotropy Wei Huang, Pan Deng*, Huawei Zhou, University of Houston Summary P-wave reflection coefficients have been a valuable tool to quantify the shale/sand system. The reflection coefficient is a complex function of P-wave...
Proceedings Papers

Paper presented at the 2015 SEG Annual Meeting, October 18–23, 2015
Paper Number: SEG-2015-5859284
..., it is reflected and transmitted. The equation of the reflection coefficient is quite complex and laborious, so it does not provide an intuitive understanding of how different amplitude relates to the parameters of the media and how variation of a particular parameter affects the reflection coefficient...
Proceedings Papers

Paper presented at the 2015 SEG Annual Meeting, October 18–23, 2015
Paper Number: SEG-2015-5885012
.... The ray parameter and slowness vectors are introduced as a function of attenuation angle and incident angle. For incident inhomogeneous P-wave, we show that reflection coefficient is a complex function, that its imaginary part is due to anelasticity in medium. Introduction Reflection coefficients...
Proceedings Papers

Paper presented at the The 29th International Ocean and Polar Engineering Conference, June 16–21, 2019
Paper Number: ISOPE-I-19-523
... integral equation, etc. Most of these studies focused on the reflection coefficient of slotted/perforated wall structures. Furthermore, a numerical simulation model based on the Navier-Stokes (N-S) equation has become a common approach to solving these types of complex practical problems. Hence; wave...
Proceedings Papers

Paper presented at the 2007 SEG Annual Meeting, September 23–28, 2007
Paper Number: SEG-2007-2016
... SUMMARY A hybrid ray-propagator matrix approach can be an efficient, accurate and robust method to seismic modeling of complex stratified reservoirs. The hybrid approach combines wavefront construction (WFC) ray tracing with composite reflection coefficients to generate synthetic seismograms...
Proceedings Papers

Paper presented at the The 27th International Ocean and Polar Engineering Conference, June 25–30, 2017
Paper Number: ISOPE-I-17-549
.... The wave absorbers developed so far can be roughly divided into two categories: active wave absorbers and passive wave absorbers. Because of the high cost and complex control system, the active wave absorbers are mainly adopted for the wave generation module to cancel the reflected waves from the tested...
Journal Articles
Journal: SPE Journal
SPE J. 4 (04): 353–359.
Paper Number: SPE-57930-PA
Published: 01 December 1999
... is the dielectric constant of free space. Hence v is also a complex parameter. 1 12 1999 1 12 1999 1999. Society of Petroleum Engineers scatter function formula transmission line calibration measurement amplitude upstream oil & gas reflection coefficient impedance frequency...
Proceedings Papers

Paper presented at the 2016 SEG International Exposition and Annual Meeting, October 16–21, 2016
Paper Number: SEG-2016-13818415
... a calculation method of reservoir fluid mobility based on seismic complex spectral decomposition. Firstly, the computation formula for reservoir fluid mobility is deduced based on low-frequency asymptotic analysis theory of frequency-dependent reflection coefficient in fluid-saturated porous media of Biot model...
Proceedings Papers

Paper presented at the 2007 SEG Annual Meeting, September 23–28, 2007
Paper Number: SEG-2007-0094
... a reservoir is fractured at various stages, a complex fracture network is formed within the reservoir. In this abstract, the reflectivity method is used to compute reflection coefficients for PP, PS1 and PS2 waves at an inter- face of two initially VTI (vertically transverse isotropic) half-spaces (shales...
Proceedings Papers

Paper presented at the 2007 SEG Annual Meeting, September 23–28, 2007
Paper Number: SEG-2007-0269
... of the envelope yields a reflectivity estimate. This is converted to a reflection coefficient by dividing by an estimate employing RPP = 1. The current program based on equation 1 was modified to accept complex-valued wavelet spectra. Previous work (Ursenbach, Haase and Downton, 2005) has shown that spherical...
Proceedings Papers

Paper presented at the 2014 SEG Annual Meeting, October 26–31, 2014
Paper Number: SEG-2014-1079
... Summary Full wavefield migration (FWM) is an inversion-based seismic imaging method that aims at using the complex wavefields in illuminating the subsurface. Instead of simply propagating a source-side wavefield, as in Primary Wavefield Migration (PWM) method, FWM utilizes the complex...
Proceedings Papers

Paper presented at the 2008 SEG Annual Meeting, November 9–14, 2008
Paper Number: SEG-2008-0269
...), but though these equations can describe the variation of PP (incident P wave, reflected P wave) and PS (incident P wave, reflected S wave) reflection coefficients, they are mathematically complex and are usually not applied directly in practice. With the development of converted wave exploration, AVO...
Proceedings Papers

Paper presented at the 2009 SEG Annual Meeting, October 25–30, 2009
Paper Number: SEG-2009-1257
... of about 300, they are less than 0.02. Figure 2d shows the isolines of the transmission coefficients of the converted qP-qSV waves. These isolines have a complex shape, since the dependence of the transmission coefficients of the qP-qSV waves on the angle of incidence and the azimuth is a multiextremal...
Proceedings Papers

Paper presented at the 2010 SEG Annual Meeting, October 17–22, 2010
Paper Number: SEG-2010-0444
... the statistical inversion methods. Markov Chains Monte Carlo method is a global optimization method, which searches the solution space randomly to get the reasonable solution. The solution is the posteriori probability density function in the Bayesian inference. Due to its complex form, we use MCMC method...
Proceedings Papers

Paper presented at the 2009 SEG Annual Meeting, October 25–30, 2009
Paper Number: SEG-2009-2442
... on this theoretical matrix equation, a relatively fast and high accuracy inversion algorithm with hybrid technique was proposed. Theory After conducting Fourier transforms on Robinson convolution model, select a part of complex spectral. With the assumption that underground reflection coefficients are sparse...
Journal Articles
SPE Form Eval 10 (02): 72–78.
Paper Number: SPE-24688-PA
Published: 01 June 1995
... to determine the complex reflection coefficient of the rock. The reflection coefficient estimates are converted into wave velocity estimates using a procedure based on a simplified viscoelastic wave propagation model. Sound speed estimates in reasonable agreement with those determined using standard...
Proceedings Papers

Paper presented at the 2007 SEG Annual Meeting, September 23–28, 2007
Paper Number: SEG-2007-2035
... medium with the uniformly distributed porosity f whose pores are filled with a viscous fluid. line correspond complex reservoir reservoir characterization temperature dependent reflection flow in porous media equation free fluid numerical simulation porous medium reflection coefficient...
Proceedings Papers

Paper presented at the 2015 SEG Annual Meeting, October 18–23, 2015
Paper Number: SEG-2015-5916402
... Summary Sparse-Spike Deconvolution (SSD) is a commonly used seismic deconvolution method for reflectivity inversion and acoustic impedance inversion. However, when applying it to multi-dimensional seismic data on a trace-by-trace basis or to seismic data with complex structure...

Product(s) added to cart

Close Modal