Can hydrocarbon saturation be estimated using density contrast parameter?

Rock physics analysis: a tool for lithology and fluid prediction in the Gulf of Thailand

“…Estimation of the density through seismic inversion has been considered difficult and is dependent on the appropriate angle stacks to get a meaningful result. However some encouraging results have been reported for density estimation where density contrast is the dominant contributor for lithology or fluid discrimination (Behura et al, 2010, Kabir et al, 2006). An estimation of density through simultaneous inversion may be useful in this case if far angle volumes greater than 30 degrees are available.…”

Density extraction from P-wave AVO inversion: Tuscaloosa Trend example

“…Kabir et al (2006), however, showed that density can be reliably estimated from near and mid offsets when density contrast is the dominant contributor to the reflection coefficient (Figure 1). Consider a hypothetical case of a reflection from an interface separating two media having the same P-and S-wave velocities and differing only in density.…”

Amplitude variation with incident angle and azimuth inversion for Young's impedance, Poisson's ratio and fracture weaknesses in shale gas reservoirs

“…Similarly to the P-and S-wave * E-mail: panxinpeng1990@gmail.com impedances, the product of Young's modulus and density can be termed as Young's impedance (Zong and Yin 2017). However, the estimation of Young's impedance attribute from surface seismic data is quite arduous and unstable due to the requirements of the information of large incident angles or offsets (Downton 2005;Kabir et al 2006). In this paper, we derive a linearized PP-wave reflection coefficient in terms of Young's impedance and perform the direct inversion for Young's impedance to reduce the accumulated errors caused by the indirect estimation.…”