| Popis: |
Summary Well logs are considered by geophysicists as “hard data” for seismic reservoir characterization. In the last few years, lots of wells have been drilled for heavy oil delineation in different fields. Also, many core samples were measured in the laboratory and a wide scattering of velocity within heavy oil sand was observed (Han et al., 2007). Some of the factors controlling the velocities in heavy oil sands are: rock texture, pore fluid properties and the interaction between pore fluids and the rock frame at different temperatures. All of these have been investigated by laboratory measurements. In this paper we analyze and investigate the effect of rock texture on Vp/Vs ratio from well logs in two different heavy oil reservoirs located in the Athabasca basin in northern Alberta, Canada. |
