... that explicitly incorporates the influence of wettability. The inputs to the resistivity model include water saturation, resistivity index, and pore-geometry-related parameters. In the core-scale verification step, we compare the results of wettability and fluid saturations obtained from the new workflow...

... Saturation of the clean and dry core plug occurs with a laboratory brine of known salinity concentration. The resistivity ( R w ) of the brine is also determined at a test temperature consistent with required test conditions. Resistivity index (RI) for <italic>n</italic> Sample...

... to be approximately 2 for clean sandstones. Deviations from Archie's law are known to occur, particularly at low water saturations, even for clean sandstones ( Knackstedt et al., 2007 ; Montaron, 2009 ; Han et al., 2009 and Yanici et al., 2013 ). Abstract Resistivity Index (RI) of Fontainebleau...

... capillary number dependent non-Archie behavior and hysteresis of the resistivity index. For steady-state displacement the resistivity index exhibits no significant hysteresis. For increasing capillary number we observe a higher degree of non-Archie (negative curvature) behavior. The simulated data...

... the mobility of ions, not stop it. Increased polarization effects were observed at the first two data points between test 5_11 and test 5_17 due to an increase in the applied current. Both test 5_11 and test 5_17 exhibited little noise in the resistivity index measurement throughout the course...

... analysis time lapse wellbore design drilling fluids and materials acquisition optimal comparison upstream oil &amp; gas well logging bulk density measurement resistivity index time lapse shallow resistivity index drilling fluid property drilling fluid chemistry alteration wellbore alteration...

... an approach to estimate permeability using both the resistivity well logging and well testing. steam-water relative permeability berea sandstone upstream oil &amp; gas resistivity index sanyal 6 resistivity data resistivity index data fraction water saturation semianalytical model permeability...

... Abstract The second Archie equation relates water saturation to formation resistivity index by a power function. This important relationship has been widely used to evaluate hydrocarbon saturation. However, many rocks don't obey this empirical rule. The best Archie fit to these data may...

... resistivity index imbibition interpretation st maximin plug experiment log interpretation log analysis procedure saturation injection local resistivity measurement log analyst resistance reservoir characterization standard deviation enhanced recovery spe 84299 Introduction Laboratory...

... Abstract A detailed explanation of the non-Archie behavior of the resistivity index vs Sw curves in carbonates is proposed. The model is based on resistivity index (RI) curves measured at ambient and reservoir conditions, on double or triple porosity micritic and oolitic carbonates. We used...

... Abstract A dynamic measurement of reservoir connectivity based on a parameter called resistivity index (RI) is evaluated. The RI parameter takes into account the pressure effects from wells but does not solve pressure equations. This technique is compared with other static connectivity...

... &amp; gas pore-lining chlorite interpretation conductivity reservoir petrophysical property threshold radius microporosity spe 63070 log analysis chlorite plug surface area saturation fraction experiment resistivity index log analyst well logging pore body reservoir characterization...

... distribution. The following response of the Resistivity Index (RI) is noted: RI vs. S w relationship does not follow an Archie-type power law RI vs. S w relationship is different for the parallel and perpendicular laminated resistivity components. The tensor water saturation equation...

... ABSTRACT Experimental data of resistivity index and oil-brine capillary pressure on sandstone and carbonate rock samples from 4 reservoirs are reported. Laboratory equipment using actual fluids at reservoir conditions has been developed. The capillary drainage was achieved with the porous-plate...

.... This is consistent with Smoluchowski's equation. Incorporation of the clay-lined capillary tube model into a 3-dimensional network model allows for study of the variation of resistivity index with water saturation in water-wet shaly sand formations. The effects of brine concentration, ion radii, and clay...

... cations, and their equivalent ionic conductance. Experimental data support this relation. The model was extended to cases where the sands were oil-bearing. An expression was obtained relating the resistivity index to water saturation, brine conductivity, and the clay parameters mentioned above...