formation factor

formation factor

[fȯr′mā·shən ‚fak·tər]
(geochemistry)
The ratio between the conductivity of an electrolyte and that of a rock saturated with the same electrolyte. Also known as resistivity factor.
(geology)
A function of the porosity and internal geometry of a reservoir rock system, expressed as F = φ-m, where φ is the fractional porosity of the rock, and m is the cementation factor (pore-opening reduction).
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Weiss was recognized for fundamental advancement of concrete pavement durability through applied research, including application of the ring and dual-ring tests, resistivity test, and most notably the "formation factor." Some of his technical achievements are important components of the Performance Engineered Mixtures program, and are enabling the industry to develop the next generation specification for concrete pavement quality assurance.
Named for ACPA's chief executive officer from 1985-1998, the award recognizes fundamental advancement of concrete pavement durability through applied research, including application of ring, dual-ring and resistivity tests, plus the "formation factor." Some of Professor Weiss' notable technical achievements are reflected in the "Performance Engineered Mixtures for Concrete Pavements" program, equipping the Federal Highway Administration, state departments of transportation and industry to work collaboratively to develop the next generation specification for concrete pavement quality assurance.
In this paper, an integrated core to pore scale approach is adopted to compute macro scale petrophysical rock parameters such as porosity, permeability, formation factor, and pore throat size and distribution directly from 3D digitized rock images.
Nassiri, "Sensor-based time-dependent formation factor in prediction of chloride ingress in mortar," Magazine of Concrete Research, pp.
Afterwards the model was used by taking fluid parameters, rock-fluid interface parameters already provided in [13], and rock microstructure parameters (porosity, permeability, and formation factor) measured by us for all the samples.
While percentages can be highly deceptive, we should also take into account the capital formation factor on which Pakistan is lagging far behind.
[F.sub.RH] = formation factor that adjusts for differences in relative humidity (-)
where F is a soil-structure dependent formation factor, [delta] is the empirical ratio between equivalent conductance of clay counter ions to the maximum value of this equivalent conductance, and [I.sub.n] is the intercept of the linear part of the [[sigma.sub.a]-[[sigma].sub.w] curve.
The presented results, includes comparisons of image-based porosity and simulated permeability, formation factor, and pore size distribution with conventional laboratory experimental data obtained from core plugs.
Evaluating the experts' responses six factors having an impact on trust formation factors were identified.

Full browser ?