WebBased on this, a permeability estimation model was proposed and tested. In addition, the maxima of imaginary resistivity had power exponential relationships with the porosity and the water saturation of the cores. A saturation evaluation model based on the maxima of imaginary resistivity was established by imitating Archie’s formula. Web2.1 Functional estimations agree with the structure of the K-channel inner pore dimension. The advent of X-ray crystallography shed light on the engine room of K + channel conduction, explaining both ion selectivity and high permeation rates. However, despite the high conservation of their signature sequence, the 10-to 100-fold difference in ...
Structuration and deformation of colloidal hydrogels
Web1. dec 2016 · Permeability estimations based on core-to-log relationships in dual-porosity carbonate reservoirs usually fail to reach the permeability measured on drillstem tests (DST). The reasons behind this ... WebThe permeability values provided by this method should be considered to be very small-scale (see Figure 12.1). PSD analysis is carried out on only relatively small samples, … tsp and tbsp
Estimation of soil permeability - ScienceDirect
Web1. nov 2016 · The estimated permeability was compared to the measured value, and 92% of the results are within a factor of ±5, and 46% are with a factor of ±2. Potential sources of systematic error are discussed both qualitatively and quantitatively. Keywords Permeability estimation Carbonate Thin section 2D flow modeling K2D and K3D relationship 1. … Web1. máj 1991 · This paper reviewsthe commercially available permeability-estimation techniques and discusses theimportant factors that illustrate their interrelationships. … WebThe simplest quantitative methods used to predict permeability from logs have been keyed to empirical equations of the type: log k = P + Q ⋅ Φ or l o g k = P + Q ⋅ l o g Φ where P and Q are constants determined from core measurements and applied to log measurements of porosity (Φ) to generate predictions of permeability ( k ). tsp and traditional ira contribution limits