... modulus for the bulk modulus of fluid estimation. Extracted bulk modulus of fluid is used for the hydrocarbons bearing intervals identification and for the saturation evaluation. As it will be shown below, the major method limitation is the low contrast between the bulk moduli of the formation water...

.... Upstream Oil & Gas well logging water salinity porosity cao minh Saturation Evaluation log analysis formation salinity salinity resistivity reservoir graphical method determination international petroleum technology conference sigma measurement true sigma resistivity-sigma technique...

... the invasion process, to be compared with field acquired resistivity curves. This approach allowed to verify that the bias in saturation evaluation was, as expected, directly explained by the complex 3D heterogeneity of the reservoir, not detected by conventional logs, and not accurately represented...