G. M. Hamada

TL;DR: The use of the ratio of compressional wave velocity to shear wave velocity, Vp/Vs, is a good tool in identifying fluid type as mentioned in this paper, however, it is sensitive to the saturating fluid type.

TL;DR: In this article, three techniques were implemented to determine Archie's parameters; conventional technique, core Archie's parameter estimate technique and three-dimensional technique and water saturation profiles were generated using the different Archie parameters determined by the three techniques, these profiles have shown a significant difference in water saturation values and such difference could be mainly attributed to the uncertainty level for the calculated Archie parameters.

TL;DR: In this paper, three techniques were implemented to determine Archie's parameters; conventional technique, core Archie's parameter estimate technique and three-dimensional technique and water saturation profiles were generated using the different Archie parameters determined by the three techniques, these profiles have shown a significant difference in water saturation values and such difference could be mainly attributed to the uncertainty level for the calculated Archie parameters.

TL;DR: Aguilera et al. as mentioned in this paper discussed the different reasons sandstone reservoir can have low resistivity, including the presence of conductive minerals such as clay minerals and pyrite in a clean reservoir rock.

TL;DR: In this article, the authors presented two cases of low-resistivity reservoirs and low-contrast resistivity reservoirs, where conventional logs failed to determine the petrophysical properties of reservoirs.