... solubility parameters are linearly related to DFA density. Filed case studies prove the value and simplicity of our heavy end treatment. A volatile oil case study shows that colored resins (heavy asphaltene-like resins) are molecularly dissolved in crude oils. Several case studies show asphaltenes...

... surfactant system surfactant solubility chemical slug solubility parameter crude upstream oil & gas salinity enthalpy parameter formulation dead crude midpoint salinity crude oil methane enhanced recovery solubility live crude experiment surfactant tail phase behavior Introduction...

... includes routine PVT data, compositional analyses, and a single onset titration using stock-tank oil and a light n-alkane precipitant such as n-heptane. The predicted onset solubility parameter at the bubble point is compared with the calculated solubility parameter of crude oil at that pressure...

... of wax and asphaltenes in organic solutions. The solid-liquid equilibrium K-value is expressed as a function of the heat of melting, melting point temperature, solubility parameter, and the molar volume of each component in the solution. All these parameters have been correlated with molecular weight...

... solubility parameter precipitate scale inhibition asphaltene equilibria deposition precipitation asphaltene inhibition asphaltene behaviour wax remediation thermodynamic model asphaltene remediation concentration co 2 asphaltene stability composition SPE SPE 20530 Experimental and Modeling...