resistivity index

resistivity index

[‚rē‚zis′tiv·əd·ē ‚in‚deks]
(petroleum engineering)
Ratio of the true electrical resistivity of a rock system at a specified water saturation, to the resistivity of the rock itself; used for calculation of electrical well-logging data.
References in periodicals archive ?
For the patients with unilateral renal artery stenosis with resistivity index > 0.
Intrarenal resistivity index (IRI) is a measure of the hemodynamic changes in the intra-renal arteries.
OBM contamination reduced the compressive strength and the changed the electrical resistivity index (RI24) in all of the samples studied.
Figures 1B and 1C) The structure exhibited hilar vascularity and PW-Doppler (Figure 1D) demonstrated a resistivity index of 0.