Study of blending behavior of α-capric betaine amphoteric surfactant

The surface tension of zwitterionic surfactant α-capric betaine(α-CB)and the aggregation number of its micelles have been investigated by means of drop volume method and steady-state fluorescence technology respectively.

The electrodialysis desalination of a crude fatty-based zwitterionic surfactant α-capric betaine was investigated.

0 g/L carboxyl betaine and prepared in a simulation Daqing produced water of TSD=3.

In this paper, it mainly does the research on systematic evaluation on interfacial properties of the carboxyl betaine surfactant and sulfosalicylic and implements physical simulation experiments with the surfactant systems through the optimization of the surfactant adsorption experiments and the stability of oil displacement experiments.

The interfacial tension,IFT,between aqueous solution of sulfobetaine BS11 in produced water of TSD=3.

The core flooding results by SP and ASP solutions containing a sulfobetaine,BS11,as surfactant at conditions of Daqing oil field are presented.

A new sulfobetaine as sufactant for EOR having lipophilic long-chain alkyl with aromatic ring in middle position is presented and notated as SLB-13.

Octadecyl hydroxysulfobetaine was synthesized under reaction temperature 90 ℃ and reaction time 4 h using isopropanol aqueous solution(volume ratio of isopropanol to water 2∶1) as solvent,from octadecyl tertiary amine and sodium 3-chloro-2-hydroxy propane sulfonate which was prepared using sodium hydrogen sulfite as sulfonating agent under 85 ℃.

The slug structure of natural mixed carboxylates (NMCs)/alkyl sulfo betaines (DSB)/xanthan flooding system formulated in laboratory experimental studies is presented as follows: 10 g/L KCl solution as preflush; 1 500 mg/L xanthan solution as prepad; 1.