... The near surface layer causes a strong absorption and attenuation effect on seismic waves, which seriously affects the resolution of seismic data, distorts seismic waveforms, and affects seismic imaging and reservoir identification. In order to eliminate the near-surface absorption...

... widened by more than 16Hz after seismic data compensation processing. geologist uphole survey data equation attenuation receiving point geology formula exploration geophysicist geophone coupling effect reservoir characterization geophone seismic wave amplitude spectrum excitation point...

... use of SEE for geothermal monitoring through laboratory experiments and field surveys. upstream oil & gas applied geoscience co 2 electric signal coseismic electric signal constraint seismic wave renewable energy exploration geophysicist 10 electrode microseismicity seismoelectric...

... The running high-speed train (HST) stimulates various seismic waves near a high-speed railway (HSR) when it runs on an HSR. Thus the received seismic signal can be further utilized to estimate the HST speed without using any onboard device. Based on the assumption that every carriage of the HST...

... We present a numerical method for computing the first arrival time of seismic waves. The scheme can tackle 3D media with elastic properties defined by a fully anisotropic Hooke tensor. Our numerical method proceeds in a single pass over the domain, similar to the Fast Marching method, and achieves...

... to this characteristic during seismic wave retrieval. The aim of this study is to investigate the influence of the train traffic characteristics on the seismic interferometry method. After analyzing the cross correlation of the train-induced vibrations at two receivers, we find that the train traffic noise introduces...

... phase information ratio method information spectrum spectral ratio method equation amplitude seismic wave wavelet upstream oil & gas attenuation frequency objective function conventional spectral ratio method seg international exposition inversion method geophysics References...

... and reservoir, which seriously affects the development of oilfield. On the basis of understanding the propagation mechanism and attenuation effect of seismic waves in gas cloud areas, we present the gathers simulation method based on priority traces to improve the quality of seismic imaging in gas cloud areas...

... wave equation reservoir characterization seismic wave annual meeting seg international exposition cpml upstream oil & gas operator poroelastic wave equation stability incident wave absorption effect simulation reference solution numerical modeling coefficient equation boundary...

... ABSTRACT In the study of seismic wave scattering, most of the research is based on the assumption of far-field and plane wave incidence, which is applicable to the far-field case, but cannot describe the near-field seismic wave scattering well. Based on this problem, we propose scattering...

... ABSTRACT Quality factor Q is an important parameter that describes the seismic wave attenuation. Estimation of Q factor plays a fundamental role in enhancing seismic resolution via absorption compensation for the near- surface attenuation. In this paper, we discuss two ray-based tomographic...

... borehole seismic wave media inelasticity heterogeneity attenuation qscat inversion References References Aki , K. , and P. G. Richards , 2002 , Quantitative seismology : University Science Books . Amundsen , L. , and R. Mittet , 1994 , Estimation...

... 12 Presentation Type: Poster velocity dispersion la cruz porosity permeability spano upstream oil & gas dispersion wave propagation lower frequency compressional wave acoustical society seismic wave frequency thermomechanical coupling media seg international exposition...

... force generates seismic waves at interfaces with resistivity contrast, which are subsequently detected by seismic receivers and appropriately processed to yield a subsurface image. Initial analysis based on layered Earth models demonstrates that in some instances the magneto-seismic method has...

... ABSTRACT The attenuation of seismic wave is well related to the oil and gas in the reservoirs. It can be quantitatively characterized by the value of quality factor Q. The pre-stack elastic impedance inversion contains more information compared to the post-stack data, but also can obtain...

... seismic wave sandstone matrix reflection coefficient fracture saturation References References Carcione , J. M. , 1997 , Reflection and transmission of qP-qS plane waves at a plane boundary between viscoelastic transversely isotropic media : Geophysical Journal International...

... types of seismic wave in this random media model, a multistage group marching upwind hybrid method is presented. Because we use group marching method (GMM), upwind scheme, finite difference with non-uniform grid spacing and linear traveltime interpolation method together, this new ray tracing method...

... ABSTRACT Due to few or a few drilled wells in the deepwater area, conventional technologies such as seismic inversion without constraining from logging can generate multiple solutions in detecting oil and gas. According to the seismic wave attenuation and velocity dispersion, the frequency...

... algorithm to quantify fracture properties. Presentation Date: Wednesday, September 27, 2017 Start Time: 8:55 AM Location: 330A Presentation Type: ORAL seismic wave propagation upstream oil & gas vector single fracture anisotropy geometry schoenberg reservoir characterization...

... ABSTRACT Attenuation and dispersion of seismic wave are the inherent characteristics of underground media containing fluid and pores. Extracting elastic and physical information from the collected seismic data is helpful to study the propagation law of seismic waves in biphasic medium. Based...