The Study Of KPS And Its Components Phase Behavior

ASP flooding is a kind of new oil displacement method with large swept volume and high oil displacement efficiency of oil.By studying the phase behavior of the ASP system and oil,people found that the mixing system can be separated into three phases in the proper PH value and salinity.The up phase is oil,the down phase is the aqueous solution of asp system,the middle phase is the mixing system.The ASP system which can form a middle phase has the best oil displacement efficiency and the composition of the surfactant have different impact in the formation of middle phase.In this paper we get three kinds of composition with different polarity by separating the purified KPS.Then using IR,1 HNMR and MS and to analyzing the KPS and its components,molecular structure and molecular weight distribution.In this paper we study the IFT of KPS and its components by changing the quantity of slat?alkali and surfactant.Then we found the component of C has the best surface activity in the different surfactant concentrations,and the interfacial tension of C can reach 10-4 mN/m in the condition of slat,the interfacial tension of C and KPS can reach 10-3mN/m in the condition of alkali.We also study the stability an type of emulsion which is made by KPS and its components by changing the quantity of slat?alkali and polymer.We found that slat and alkali cad reduce the stability of emulsion,but polymer can enhance the stability.The type of emulsion which is made by the B and C can be changed in high quantity of slat and alkali.At last we study the phase behavior and particle size distribution of ASP system with oil and simulated oil by changing the quantity of slat?alkali and surfactant.We find than the volume of middle phase increase with lower interfacial tension.Particle size distribution shows a smooth curve and particle moving in the direction of larger particles with the increase of salt content and alkali content.