... The optimization design of geometry based on forward modeling is an important means to improve the quality of field data acquisition and reduce acquisition costs. Based on the conventional Gaussian beam forward simulation theory, the Fresnel band constrained Gaussian beam (Fresnel beam) forward...

... The Gaussian beam migration (GBM) method is an flexible and efficient depth imaging method, which can accurately image multipath arrivals and have no steep-dip limitations. It is commonly implemented in the frequency domain, but it might produce weak illumination and strong artifacts in deep...

... A Born modeling method for single-scattering waves in 2D visco-acoustic medium using Gaussian beams is presented in this paper. Based on the linear scattering theory, the method employs Gaussian beams to obtain the Green’s function and takes the influence of the medium’s viscosity on the seismic...

...: Monday, September 16, 2019 Session Start Time: 1:50 PM Presentation Start Time: 3:55 PM Location: Poster Station 11 Presentation Type: Poster seg international exposition phase-space beam summation imaging beam propagator antenna formulation gaussian beam propagation migration...

... ABSTRACT Elastic reverse time migration with Gaussian beams is a flexible and adaptable imaging tool for multicomponent seismic data, because it can image the structures of the subsurface media more accurately. As the earth is anisotropic in real case, the ignorance of the anisotropy...

... ABSTRACT The anisotropy widely exists in the subsurface media, which cannot be ignored during the seismic migration. Using the anisotropic ray tracing systems based on phase velocity, we proposed an anisotropic reverse time migration with Gaussian beams method, which combines the high...

... ABSTRACT With the aim of understanding and assessing the reservoir changes due to oil production, we develop a target-oriented inversion scheme of time-lapse seismic waveform data using the distorted Born iterative T-matrix (DBIT) method with the Gaussian beam based Green’s function. Unlike...

... in the reflected waves. In contrast, the high concentration of subseismic cavities produce intensive scattering which can be used to image these cavernous areas. To increase the resolution of images in scattered waves we use multicomponent Gaussian beams. In contrast to the plane waves used in conventional...

... ABSTRACT In order to solve the exploration problems of stratigraphic trap with small scale and complex structure, the method of cross-well seismic reflection wave stack imaging that based on the ray theory is used in research. The theoretical foundation of this method are Gaussian beam forward...

... the first Fresnel zone in elastic media, we firstly derive a new type of vector seismic beam, i.e., Fresnel beam, which has more stable propagation mechanism than conventional Gaussian beam. Then we used it to construct vectorial wave continuation operators and applied these operators to ray-based elastic...

.... Presentation Date: Wednesday, October 19, 2016 Start Time: 4:25:00 PM Location: 143/149 Presentation Type: ORAL gaussian beam velocity model ray tomography upstream oil & gas information seg seg international exposition high resolution image point reflection tomography migration wide...

... ABSTRACT We present a depth migration method that uses the delta packet summation for approximating the Green's function. By definition, a delta packet is the inverse Fourier transform of the Gaussian beam under consideration. Thus, the delta packet is the space-time domain counterpart...

... ABSTRACT We develop the method using exact localized waves to detect the spacing between fractures from the idea of the earlier Double focusing Gaussian beams. First, we investigate the localized wave propagation in complex acoustic media to show its directional property with limited...

... Summary We adopt the time-space Gaussian beam for seismic data prestack depth migration in this abstract. This method belongs to the category of ray-based beam methods. It decomposes source wavelet into a set of Gaussian functions and propagates these Gaussian functions along appropriate...

... Summary As the elastic depth migration can obtain good images of subsurface structures with multi-wave and multicomponent information in seismic record, an effective prestack elastic Gaussian beam migration method is presented in this abstract. Unlike common multicomponent data processing...

... Summary Gaussian beam prestack depth migration only produces blurred images with underestimated amplitude caused by sparse receiver sampling, narrow acquisition apertures, and limited wavefields bandwidth. This distortion can be partially corrected by using the model-space least-squares...

..., fracture spacing, and fracture compliances. We have previously shown that, when seismic acquisition has full azimuth, a double focusing Gaussian beams (DFGB) method is effective at determining fracture orientations for multiple fracture sets, the fracture spacing of each fracture set (even if the fractures...

... Summary In this paper, we propose the tomography velocity modeling method based on angle-domain common image gathers (ADCIGs) produced by reverse-time migration with Gaussian beam method(GBRTM), which not only reduces the amount of computation, but also improves the imaging accuracy. ADCIGs...

... the internal fracture network information has become a first order issue for optimal hydrocarbon recovery. By studying multiple scattering of seismic waves by locally periodic fractures, we have previously shown that, when the seismic acquisition has full azimuth, a double focusing Gaussian beams (DFGB...

... SUMMARY Seismic wave propagation in attenuative media can be efficiently modeled with ray-based methods. Here, we present a methodology to generate reflection data from attenuative anisotropic media using the Kirchhoff scattering integral and summation of Gaussian beams. Green’s functions...