| The application of alkyl benzene sulfonate surfactant for the maximum from the known mineral deposits in mining has important strategic significance of oil energy.Through the combination of surface active directional distribution in oil-water two-phase contact surface in the agent and the underground rock,which has broken the boundary layer of underground crude oil. The crude oil bound can break the underground rock into oil flow,and the polar water molecules in the solution will occupy the position of the original crude oil.Then the wet to water inver to wet rock,decrease in IFT to improve the recovery rate of crude oil.Straight chain fatty acyl chloride of different carbon number and p-xylene was used in the experiment, through the Friedel crafts, Grignard reaction, reduction,hydroxyl sulphonate and neutralization steps compounds 7 isomers of 14 alkyl aryl sulfonate. Application of HMNR 、 CNMR 、 LCMS to character and analysis the products to determine the composition and purity of the target product.This paper uses maximum bubble pressure to determinates surface tension.And through a series of steps by drawing and calculation to reach CMC、γcmc、Γmax.Then analysis the data to find the relationship between the parameters change with the concentration.To explore the interface tensiometer measurement factors,such as injection,revolution, temperature, etc. And measures interfacial tension by Interface Tensiometer and verificate n-alkanes in surface area with radius variation.Summarizethe IFT values changing with time and Nmin. On the basis of determination of Nmin, taking the alkyl benzene sulfonate isomers for water phase with the Nmin alkane as oil phase, measure the relative influence of interfacial tension of different concentration of water. |
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