How does HPAM affect viscoelastic surfactant?

For viscoelastic surfactant solutions, adding HPAM or HPOC all increase the viscosity. Moreover, the viscosity of viscoelastic surfactant solution can be reinforced by adding a small amount of HPOC. The synergistic effect on viscosity will also affect the oil displacement efficiency of the surfactant/polymer mixed system.

Does adding surfactant decrease viscosity of a polymer solution?

By combining all the above analysis, for polymer solution, it is hoped that the addition of surfactant does not decrease the viscosity of the solution. For wormlike micelle solutions, it is hoped that the additives such as polymer can enhance the viscoelasticity of the solution. 3.2. Rheology properties of polymer/surfactant mixed solution 3.2.1.

What are the properties of surfactant/polymer mixed solution?

In this work, a systematic study was conducted on the properties of the surfactant/polymer mixed solution, involving viscoelasticity, oil/water interfacial tension and oil displacement efficiency. Zwitterionic-anionic surfactant mixture (HDPS-SDS) was chosen to show the effect of concentration and micelles type.

Does HDPs-SDS affect the viscosity of a surfactant/polymer mixed solution?

However, micelles type formed by HDPS-SDS will significantly affect the viscosity of the surfactant/polymer mixed solution. Mixtures of HPAM or HPOC with spherical micelles show weak or strong negative synergistic effects on viscosity, and mixtures of HPAM or HPOC with wormlike micelles all show strong positive synergistic effect on viscosity.

How does viscosity affect Oil Displacement efficiency of surfactant/polymer mixed system?

The synergistic effect on viscosity will also affect the oil displacement efficiency of the surfactant/polymer mixed system. For example, the enhanced oil displacement efficiency E of surfactant/polymer flooding unexpectedly reduces with adding spherical micelles formed by low concentration HDPS-SDS to 1500 mg L −1 HPOC solutions.

What is the synergistic effect of surfactant/polymer mixed system?

The synergistic effect on viscosity will also affect the oil displacement efficiency of the surfactant/polymer mixed system. For chemical flooding, choosing suitable surfactant and polymer mixture to optimize the viscosity and interfacial tension is an important procedure for preparing the combination flooding system.