Entity

Time filter

Source Type


Wang X.,CAS Qingdao Institute of Oceanology | Wang X.,Laboratory for Marine Mineral Resource Geology and Exploration Function | Luan X.,CAS Qingdao Institute of Oceanology | Luan X.,Laboratory for Marine Mineral Resource Geology and Exploration Function | And 2 more authors.
Shiyou Diqiu Wuli Kantan/Oil Geophysical Prospecting | Year: 2016

Various wave propagation and attenuation characteristics in viscoelastic medium were analyzed without approximating the exact Zoeppritz equation, which cannot be used for inversion. Shen Zhanghong deduced the reflection coefficient approximate equation of viscoelastic medium in the background of fully elastic medium. The real part of the equation is fully elastic, and the imaginary part is viscoelastic. So it cannot be used in real data. We deduce in this paper reflection coefficient approximate equation of viscoelastic medium in the background of viscoelastic medium. Based on this and Bayesian prestack seismic inversion, the inversion of P-wave velocity, S-wave velocity and density is extended to the joint inversion of P-wave velocity, S-wave velocity, density, and Q value. We put forward the approximate equation of viscoelastic medium, and then the inversion equation according to the Bayesian theory. Finally, the conjugate gradient method is used to solve the inversion equation, and then the P-wave velocity, S-wave velocity, density, and Q value are obtained. Model and real data tests show that reservoirs are better predicted with P-wave velocity, S-wave velocity, density, and Q value obtained by the proposed joint inversion. © 2016, Editorial Department OIL GEOPHYSICAL PROSPECTING. All right reserved. Source

Discover hidden collaborations