... Type: Oral colombo upstream oil & gas resistivity saudi arabia government waterflood modeling & simulation reservoir characterization reservoir daniele colombo amplitude annual meeting research center csem newman reservoir model variation inversion result inversion...

... researches have been focusing on numerical simulation for AEM and inversions (Newman and Alumbaugh, 1995; Liu and Yin, 2013, 2014; Yin et al., 2015a). Right now 1D and 2D forward modeling and inversions are quite mature, 3D modeling and inversion are very limited due to accuracy and efficiency problem. Thus...

... in resitivity should be observable after inversion after about 4 years of production, taking measurement noise and other sources of errors into account. The forward and inversion 3D CSEM code of Newman and Commer (2005) is used. Presentation Date: Wednesday, October 19, 2016 Start Time: 4:25:00 PM Location...

... wavelength utilized to image the subsurface. seg denver 2014 solver laplace-fourier domain efficiency wavefield p-wave velocity petrov frequency elastic full-waveform inverse modeling inversion upstream oil & gas lawrence berkeley national laboratory iterative solver newman algorithm...

... permeability reservoir characterization upstream oil & gas geological modeling artificial intelligence application lawrence berkeley national laboratory sensitivity newman commer finsterle optimization problem geologic modeling groundwater experiment joint inversion capability inversion...

.... artificial intelligence forward modeling iteration egbert optimization kelbert modeling inverse problem resistivity hem inversion gradient newman algorithm anomalous target seg houston 2013 nlcg algorithm l-bfg algorithm magnetotelluric inversion reservoir characterization inversion...

... transversely isotropic media newman equation second-order scheme Three-Dimensional Elastic Wave Modeling in Heterogeneous Transversely Isotropic Media on Massively Parallel Computers in the Laplace-Fourier Domain. Petr Petrov and Gregory Newman, Lawrence Berkeley National Laboratory. Summary: Since...

... study is given in an earlier work (Commer and Newman, 2008, and references therein). equation em coupling effect seg seg denver 2010 polarization data spectral geophysics algorithm reservoir characterization newman forward solution em coupling contaminated spectral electric field...

...) is usually used instead of conductivity itself to obtain a stable inverse (Rijo et al., 1977; Newman and Alumbaugh, 2000; Newman and Commer, 2005). Inverting for logarithmic parameters is desirable since it restricts the original parameters to be positive quantities, which is a physical requirement...

... reconstruction csem parameterization information model-based inversion main menu three-dimensional joint inversion result newman inversion algorithm commer reservoir characterization inverse problem layer parameter mt data alumbaugh reference list conductivity model parameter...

... modeling inversion study upstream oil & gas hydrocarbon reservoir mapping simulation grid mesh csem modeling structural geology newman simulation mesh topography bathymetry iteration inversion seafloor lawrence berkeley national laboratory discretization reservoir...

... by Commer and Newman (2004) and the 3D frequency-domain finite-difference code by Newman and Alumbaugh (1995). To compare the responses quantitatively, signal-to-noise ratios (SNR) were calculated as a function of time/frequency and source-receiver separation. SNR was calculated using the scattered field...

... iteration newman inversion simulation grid INTRODUCTION SUMMARY We analyze a strategy to optimize the computational effort of largescale electromagnetic (EM) modeling and particularly inversion, the latter usually requiring a large number of forward modeling solutions. While we are interested...

...Integration of Marine CSEM and Seismic AVA Data for Reservoir Parameter Estimation G. Michael Hoversten*, Jinsong Chen, Erika Gasperikova, Gregory A. Newman Lawrence Berkeley National Laboratory Summary Reservoir fluid saturations and porosity are estimated using a two-stage process consisting...

... were computed using the parallel finite-difference algorithm of Commer and Newman (2004), while a modified version of the algorithm of Newman and Alumbaugh (1995) that incorporates a 1D solution developed by Ki Ha Lee was employed to compute the frequency domain response. Forward Modeling Results...

... background model lawrence berkeley national laboratory anomaly upstream oil & gas background response bathymetry seafloor newman normalization conocophillips hydrocarbon numerical simulation transmitter hoversten resistivity 3D numerical simulation of a deepwater EM exploration survey G...

... of the preconditioned LM scheme and the preconditioned NLCG scheme. lawrence berkeley national laboratory newman experiment conjugate gradient approximate hessian iteration preconditioner convergence gradient hessian laboratory inversion upstream oil & gas national laboratory us government...

... characterized by a fully generalized anisotropic medium. cholesky factorization lin preconditioner equation alumbaugh rapid solution electric field reservoir characterization newman geophysics well logging induction salt lake city calculation modeling em induction log analysis anisotropic...

... of surface conductors. background value upstream oil & gas interpretation geophysics apparent resistivity us government sandia national laboratory bartel resistivity linear conductor surface conductor data station conductor tem response newman central-loop tem simulation inversion...

... a method of signature measurement for marine seismic data proposed by Newman (1985). This technique uses a calibration source together with a single nearfield recording to obtain a reference dataset (i.e. earth impulse response), which is in turn used to extract the signature of the primary source from...