Statistical analysis on parameters that affect wetting for the crude oil/brine/mica system

Correlations between SARA Fractions, Density, and RI to Investigate the Stability of Asphaltene

“…Information obtained from RI measurements can be applied for various reservoir engineering calculations. The examples are PVT behavior and surface tension of reservoir fluids [34], wetting alterations in reservoirs [35,36], and asphaltene precipitation [37][38][39]. The refractive index of light crude oils can be directly measured using conventional refractometer [35,36,38].…”

“…The examples are PVT behavior and surface tension of reservoir fluids [34], wetting alterations in reservoirs [35,36], and asphaltene precipitation [37][38][39]. The refractive index of light crude oils can be directly measured using conventional refractometer [35,36,38]. However, direct measurements of the refractive index of many crudes, natural bitumen, and heavy fuels are unattainable since these liquids are too opaque so RI is only measured for fairly dilute solution; in these cases RI is determined for a series of oil/solvent mixtures and the results are extrapolated (in an assumption of a certain mixing rule) to determine the value for the crude oil [35,37,40].…”

“…The refractive index of light crude oils can be directly measured using conventional refractometer [35,36,38]. However, direct measurements of the refractive index of many crudes, natural bitumen, and heavy fuels are unattainable since these liquids are too opaque so RI is only measured for fairly dilute solution; in these cases RI is determined for a series of oil/solvent mixtures and the results are extrapolated (in an assumption of a certain mixing rule) to determine the value for the crude oil [35,37,40]. It is usually assumed that a solution of a crude oil (bitumen) behaves as an ideal binary mixture of the components [37][38][39].…”

AFM study of mineral wettability with reservoir oils

“…Stability of wawet state of reservoirs. Yang [19], Ese [20], and Buckley [21] have studied the effect of asphaltenes in altering wettability of mineral surfaces by varying the asphaltene content in oil. Simple correlations based on oil composition and asphaltene content had only limited success in predicting the propensity of crude oil to alter wettability [22].…”

Calculation of wetting angles in crude oil/water/quartz systems

“…Hence, the ability of a crude oil to alter wetting is influenced by many factors. Several authors have emphasized three characteristic properties of crude oils, i.e., gravity, acidity and basicity, that together can be used to evaluate the potential of a specific crude oil to alter wetting [30,31]. These data are available for the two oils.…”