...A data reconstruction inversion approach to extended FWI A. Gholami , H. S. Aghamiry S. Operto* *Geoazur-CNRS-IRD-UNS-OCA; University of Tehran; Speaker SUMMARY Extended FWI methods are alternatives to reduce the cycle skipping issue when data lack low-frequency content. Some Full waveform...

... weaknesses and attenuation factor. Synthetic tests confirm that the unknown parameter vector is estimated stably and reliably in the case of signal-to-noise ratio of 2. Applying the inversion approach to a field data set, we observe that reliable results of layer weaknesses and attenuation factor...

... reflection coefficients as a function of these quantities, namely the P-wave attenuation factor and anelastic PP and PSV impedances. Using the derived reflection coefficients and anelastic impedances, we establish a two-step inversion approach, which involves, first, the estimation of PP- and PSVwave...

... density estimation artificial intelligence reservoir characterization estimation individual density mineral shale formation density reservoir zone outlier fluid density seg international exposition geophysics equation inversion approach Archie , G. E. , 1942 , The electrical...

... of concerned elastic parameters. With the automatic estimation and utilization of the potential correlation among the P-, S-wave velocity, and density, new inversion approach can derive three reflectivities, namely, , , and initially. As an algorithm belonged to the machine learning, the introduced block...

... or plays with sparse well log data, such as marine or deep stratum. Broadband seismic data lead to new opportunities to estimate the low frequency of elastic parameters without well log data. A novel AVO inversion approach with a Bayesian inference for broadband seismic data is proposed in this study...

... makes full use of the advantage of low frequency component of the damped wave fields in mixed Laplace and Fourier domain. The kernel function of this proposed inversion approach is built under Bayesian inversion scheme, and the prior probability distribution of model parameter merged in objective...

..., the uncertainty of model parameters or incomplete observed data information can be easier taken into consideration with Bayesian inference. The AVO/AVA inversion approach is extended to combined time and frequency domain in this study based on the study of Bayesian AVO inversion approach in time domain by Zong...

... Summary Elastic impedance equation is extended to frequency dependent elastic impedance equation by taking partial derivative to frequency. A practical Elastic impedance Variation with incident Angle and Frequency (EVAF) inversion approach is presented to implement the estimation...

... to various approaches to estimate the P-wave and S-wave quality factors. Based on the assumption of the viscoelasticity of the underground medium, a pre-stack seismic simultaneous inversion approach for P-wave and S-wave quality factors is proposed in this study. Under the hypothesis of born integral...

... Summary Joint inversion or cooperative inversion of different geophysical data has the potential of providing more accurate estimate of subsurface rock properties. We present a cooperative inversion approach for acoustic impedance using seismic and magnetotelluric data. In this approach...

... data to delineate thin vertical conducting alteration zones associated with uranium mineralization at depth (~ 100 m). The results of the field data have also been verified with the findings of drill hole data. compact inversion scheme joint inversion approach seg denver 2014 inversion...

... interfering phantom reflectors. two-way propagator lateral distance berkhout wavefield model perturbation geophysics upstream oil & gas herrmann migration annual international meeting deconvolutional imaging condition surface-related multiple propagation effect inversion approach...

... Summary The feasibility of marine controlled-source Electromagnetic (mCSEM) monitoring for CO 2 sequestration could be evaluated by the analysis of EM responses due to injected CO 2 . However, its capability for the real CO 2 sequestration case should be verified by the inversion approach...

... characterization inversion approach upstream oil & gas upward Understanding imaging methods for potential field data Maurizio Fedi, Department of Earth Sciences, University of Naples Federico II, Italy. Mark Pilkington, Geological Survey of Canada, 615 Booth Street, Ottawa, Ontario, Canada K1A 0E9...

... popular approach for the smoothing inversion. It tries to determine a model which fits the data with the minimum-structure models. With the purpose to suppress pseudo structures, the roughness of the model must be minimized. It is a stable inversion approach, however, the result couldn t represent the geo...

...Three-dimensional fluid-flow constrained crosswell electromagnetic inversion Lin Liang , Aria Abubakar, and Tarek Habashy, Schlumberger-Doll Research, Cambridge, MA, USA SUMMARY We present a 3D inversion approach for the interpretation of crosswell electromagnetic data. The inversion is constrained...

... annual international meeting inversion approach van den berg international exposition reservoir characterization csem data receiver abubakar multiplicative cost function aria abubakar conductivity cost function multiplicative cost function simultaneous joint inversion inversion...

... SUMMARY We present two nonlinear inversion approaches for cross-well electromagnetic surveys when transmitters and/or receivers are located in steel-cased wells. Numerical studies demonstrate that these methods are effective in processing the data without requiring pre-processing...

... inversion approach ABSTRACT We present a full-waveform inversion scheme for crosshole georadar data based on a finite-difference time-domain (FDTD) solution of Maxwell''s equations and test it on pertinent synthetic data. Existing tomographic inversion techniques for crosshole georadar data...