formation resistivity

formation resistivity

[fȯr′mā·shən ri‚zis′tiv·əd·ē]
(geophysics)
Electrical resistivity of reservoir formations measured by electrical log sondes; used for clues to formation lithography and fluid content.
References in periodicals archive ?
In the plot of the true formation resistivity versus effective porosity, the Archie's parameters were calculated (a=1, m=2.06 and n=2).
Archie [5] first studied the relationship between soil resistivity and its structure and proposed the soil structural factor-resistivity structure factor F (formation resistivity factor).
The formation resistivity may be affected by salinity, anisotropy, and temperature; therefore, corrections are needed when these effects are profound.
The log readings of the formation resistivity and gamma ray in the bentonite-rich shale interval clearly indicate that the thick bentonite beds in the mid to upper part are characterized by low formation resistivity and high Gr values (Fig.
In the past twenty years, many authors presented induction tools comparing the apparent resistivity achieved at several hundred kHz and 2 MHz for detection of porous formation resistivity dispersion [11,12].
Oil generation inferred from formation resistivity Bakken Formation, Williston Basin, North Dakota.
of Oklahoma) and Donaldson (retired after a long career in public, private, and academic spheres) introduce mineralogy and petroleum geology before covering porosity and permeability, formation resistivity and water saturation, capillary pressure, wettability, applications of Darcy's Law, naturally fractured reservoirs, and the effect of stress on reservoir rock properties, among other topics.
It allows imaging groundwater salinity with relatively high spatial resolution, since formation resistivity as determined ERT strongly depends on groundwater salinity.

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