... transform algorithm to decompose the extrapolated but produce multi-angle scattering waves when hit one receiver-side wavefields into different components with diffractor. This well-known phenomenon can be observed in different incident angles; thirdly, it efficiently generates the the dip-angle gather...

... regularization over the incident angle direction is introduced into the conjugate gradient scheme to iteratively update the angle-dependent reflectivity model. A flattening-enhanced summation is used to compute the stacked images by accounting for the depth moveout of CIGs caused by velocity errors, and produces...

... difference of P-wave reflection coefficients at different azimuths. Model examples illustrate the accuracy and robustness of our proposed linearized P-wave reflectivity equation and horizontal stress inversion operator at small incident angle. applied geoscience hti medium exploration geophysicist 10...

...), with which, the multiples are first decomposed into different orders using the surface-related multiple elimination (SRME). Then, the amplitude change with incident angle for a specific-order multiple is measured based on a wavefield angle decomposition method. The dip angle of the reflector is obtained from...

... structural geology fluid saturation lithology 2 gradient surface reservoir characterization incident angle reflection coefficient avo template lithology gradient rock property poisson zero gradient contour The AVO Template: a tool for AVO interpretation James H. Crane*, Gulf Coast 3-D; James M...

... of phase velocity and inverse and PS wave can be calculated numerically through quality factor with frequency when P wave propagates at equations (1) when P wave (the upper medium is isotropic) 10° and 40° incident angles in fracture reservoir. Figure 1a © 2020 Society of Exploration Geophysicists 10.1190...

... ABSTRACT Based on the fundamental principles, we analyze the relationship between fold and S/N ratio and relationship between incident angles (or offsets) and resolution. Combined with petrophysical analysis, near offsets stack inversion (NOSI) with high density acquisition seismic data...

... ABSTRACT Zoeppritz's (1919) equations describe the partitioning of the P- and S-wave energy into transmitted and reflected components as a function of incident angle. The three-term approximation of the Zoeppritz’s equations developed by Aki and Richards (1980) show that P-impedance (), S...

... ABSTRACT Various approximations of the Zoeppritz equations, based on the assumptions of weak contrast boundary and small incident angle, are widely used in conventional AVO inversion. These approximations not only limit the scope of application, but also reduce the result accuracy. In addition...

... higher precision when the incident angle is large. The inversion based on Bayesian theory can improve the stability of the inversion. Test on the actual data shows that the result of ray parameter domain inversion with a Bayesian scheme is more accurate, stable and reliable. Presentation Date: Wednesday...

... parameter reflectivity machine learning incident angle inversion approach geophysics upstream oil & gas bayesian inference inversion reservoir characterization angle gather artificial intelligence equation 1 algorithm s-wave velocity matrix seg international exposition optimization...

... the point of rock physics is analyzed and Young's modulus changes regularly with the variation of incident angles and azimuths and the changing track of Young's modulus varying with azimuth is a cosine curve when the incident angle is fixed. With the increase of fracture density, the amplitude of variation...

... seismic exploration seg seg international exposition deviation upstream oil & gas incident angle Aki , K. , and P. G. Richards , 2002 , Quantitative seismology: Theory and methods : University Science Books , 1 . Alhussain , M. , B. Gurevich , and M...

.... Presentation Date: Wednesday, September 27, 2017 Start Time: 10:10 AM Location: 370D Presentation Type: ORAL equation machine learning seg seg international exposition artificial intelligence incident angle reservoir characterization synthetic data search direction information error...

...: Monday, September 25, 2017 Start Time: 1:50 PM Location: Exhibit Hall C, E-P Station 3 Presentation Type: EPOSTER cross-correlated value incident angle migration technique eom csp gather avo effect horizontal component geophysics boundary estimation annual meeting reservoir...

... of the source and receiver wavefield, which allow the Poynting vectors, incident angles, and reflection angles of the P- and S-waves to be calculated expediently. Next, we deduce the vector-based excitation amplitude imaging condition. This process automatically takes the particle vibration directions...

... coverage sensitivity illumination seg seg international exposition reservoir characterization imaging acquisition acquisition design geometry limitation azimuth node finite difference incident angle upstream oil & gas annual meeting ray migration velocity model Olofsson , B...

... and third orders are related to the case that waves are inhomogeneous. In a second decomposition the reflectivity can be split up into elastic, anelastic-homogeneous and anelastic-inhomogeneous terms. For incident angles sufficiently smaller than the critical angles, we compare our four term AVO equations...

... are easily affected by noise, which may make the inversion instability, besides, the weight of density term is too small to obtain accurate inversion result when the angle is small. Based on the incident-angle approximation and Fatti approximation, this paper proposes a two-term elastic impedance equation...

... & gas simulation normalized amplitude amplitude azimuth angle reservoir characterization dipole source radiation tang receiver 2 borehole log analysis well logging reflection receiver 1 incident angle ABSTRACT Reflections in acoustic borehole logging data can be used to image near...