... and highly-constrained manner. As such they are inadequate for describing many of the complementary evolutions of P- and S-wave velocities that transpire with the generation of cracks. Using a differential model of decoupled compliances, we analyze published velocities on dry and brine-saturated limestone...

... the laboratory ultrasonic velocity measurement. reservoir characterization applied geoscience contribution geophysics p-and s-wave velocity velocity data wave theory characteristic aspect ratio upstream oil & gas crack density frequency range application artificial intelligence dispersion...

... applied geoscience incident-angle stretch exploration geophysicist 10 depth-domain ps compensation ps data reservoir characterization north sea ps depth-migrated data p-and s-wave velocity match-filter approach upstream oil & gas field data fletcher schlumberger depth-migrated data...

... characterization p-and s-wave velocity kerogen water saturation upstream oil & gas porosity Berryman , J. G. , 1995 , Mixture theories for rock properties , in T. J. Ahrens , ed . Rock physics and phase relations: A handbook of physical constants , 3 , 205 – 228 , doi...

... inversion objective function inversion upstream oil & gas p-wave velocity model reservoir characterization s-wave velocity model velocity model geophysics alkhalifah p-and s-wave velocity optimization problem Aghamiry , H. S. , A. Gholami , and S. Operto , 2019...

... is the fluid bulk modulus. Finally, the P- and S- wave velocities can be computed as follows: 4 / 3eff eff p K G V , (9) eff s G V , (10) where Vp and Vs are the P- and S- wave velocities, respectively; is the density of the clean sandstone or shale. Rock physics modelling for tuffaceous sandstone...

... wavefield separation based on the Helmholtz decomposition : Geophysics , 82 , no . 2 , S173 – S183 , 10.1190/geo2016-0419.1 . two-parameter elastic lsrtm perturbation three-parameter elastic lsrtm perturbation image inversion p-and s-wave velocity velocity model elastic least...

... velocities and density. The inversion for the perturbations in P- and S-wave velocities and density is similar to elastic least-squares reverse time migration (LSRTM). An incorrect initial model will lead to some misfits at the far offsets of reflections; thus, can be utilized to update the background...

...: ORAL critical porosity model reservoir characterization shear moduli upstream oil & gas elastic property p-and s-wave velocity pore aspect ratio pore shape substitution seg seg international exposition pore shape 2 pore shape 1 variable critical porosity model substitution pore...

... Start Time: 3:05 PM Location: 371A Presentation Type: ORAL inversion full waveform inversion reservoir characterization p-and s-wave velocity display purpose seg seg international exposition upstream oil & gas fwi baseline model elastic parameter viscoelastic fwi waveform...

... ABSTRACT Elastic full waveform inversion (EFWI) embodies the original intention of waveform inversion at its inception as it is a better representation of the mostly solid Earth. However, compared with the acoustic P-wave assumption, EFWI for P- and S-wave velocities using multi-component data...

... and porosity's negative correlation. P- and S-wave velocity crossplot, Vp/Vs and P-wave impedance (Zp) crossplot both show linear relationship and can be used for rock type identification. Ultrasonic velocity and density of shale fit well with the Gardner's relationship. Total organic carbon (TOC) content...

... ABSTRACT We have developed a joint inversion method for LWD multipole acoustic data processing to simultaneously determine formation P- and S-wave velocities. The presence of the LWD tool strongly influences the dispersion characteristics of quadrupole and monopole leaky-P waves, especially...

...-wave velocity shale anisotropy parameter elastic anisotropy s-wave anisotropy water saturation anisotropy natural shale mineral seg seg international exposition reservoir characterization water saturation condition p-and s-wave velocity shale gas Allan , A. M. , W...

... of the improved MCMC method. Based on the improved MCMC method, a Bayesian AVO inversion method on the basis of the exact Zoeppritz equation has been developed, with which the P- and S-wave velocity and density can be obtained directly, and the uncertainty of AVO inversion results has been estimated as well...

... of underestimating the both P- and S-wave velocities as temperature decreases. Introduction Developing ultrasonic measurements and rock physics models are both powerful tools to let us understand and reasonably predict the complex elastic properties of heavy oil sands reservoir (Han et al. 2006; 2007; 2008; Batzle...

... parameter as well as the P- and S-wave velocities for data with different noise levels. In particular, we also observe that as the noise level decreases, more accurate estimations are obtained. The IRLM scheme provides a robust and promising method for estimating elastic parameters (especially for density...

... anisotropy s-wave velocity p-and s-wave velocity transversely isotropic parameter perpendicular p-wave anisotropy transversely isotropic media log analysis elastic property isotropic material Water Content Effects on Transversely Isotropic Parameters of Organic Rich Gas Shale Bitao Lai, Hui Li...

... inversion of three components (P-P, P-S V , P-S H ) seismic data along two different azimuths. In the first step, we use the near-offset prestack data along a single azimuth and invert them using an isotropic assumption to obtain an estimate of the vertical P- and S-wave velocities. In step 2, we...

... velocity han reservoir characterization dispersion upstream oil & gas heavy oil new model velocity model development liu seg denver 2014 oil sample api density liquid point university p-and s-wave velocity viscosity model frequency estimation Velocity model development for heavy...