As a result, gas relative permeability decreases as SW increases9. Reservoir rock wettability is another aspect that aggravates the complexity of flow behavior in the porous environment of tight gas reservoirs. The wettability of the internal surfaces of rock pores affects the relative permeability of...
Contrary to the liquids, the viscosity of gas increases with temperature for low pressure, that is, close to atmospheric pressure due to more agitation of molecules. However, at high pressure, the viscosity of gas decreases as the temperature increases. At intermediate pressure, the viscosity of ...
(2004) reported that increase in gas pressure continuously decreases the apparent diffusion coefficient; however, the influence of pressure on the effective diffusivity is not well established. 4.3 Multi-scale flow modelling According to Wei et al. (2005), there are three types of CBM reservoir ...
The infrared intensity on the active detector decreases according to the exponential relationship called the Beer-Lambert Law: where: I is the intensity in target gas. I0 is the intensity in zero gas. k is the absorption coefficient for the specific gas and filter combination. l is t...
The results showed that IFT decreases with increasing pressure. Also, this parameter has a direct relationship with salinity. As the temperature increases, the IFT values also increase141. In 2019, Mutailipu et al. discussed the IFT values between brine containing NaCl and KCl and CO2 at ...
Coal-fired power plants are ill-suited to provide flexible energy, as their thermal efficiency decreases and maintenance costs increase when they operate in a flexible peaking role. Furthermore, higher carbon emissions from coal-fired plants cancel out the main benefit of renewable ...
a. increases. b. decreases. c. remains the same. Gas Diffusion: Gas diffusion refers to the diffusion of oxygen into the blood through the tissues of the lungs as well as the diffusion of waste gases, like CO2, from the blood into the lungs for exhalatio...
H2 content of the outlet gas stream decreases as CaO sorbent approaches its saturation capacity, while CH4 content increases. In order to ensure a high-purity H2 production, the control orders the system to stop the CAR when outlet H2 molar fraction decreases below 0.85 (Fig. 1A). With the...
It is “dark” because as the electron energy increases to more than the 30 eV (the maximum of the excitation cross-section) the cross-section decreases, and therefore the luminosity decreases. The mobility of electrons is much higher than the mobility of ions; therefore, the predominant ...
The adsorption of gas causes the matrix swelling, part of which decreases the cleat porosity at the experimental conditions. As we know, the adsorption of carbon dioxide is stronger than that of methane, resulting in greater adsorption strain. A range of properties has to be estimated when the...