flow mechanism of partially cross-linked polyacrylamide in italy

flow mechanism of partially cross-linked polyacrylamide in italy
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  • What is the oil displacement mechanism of polyacrylamide?
  • The oil displacement mechanism of polyacrylamide can be explained as follows: polyacrylamide can adsorb on the rock surface and adsorb water molecules, resulting in a decrease in the relative permeability of the water phase, so as to achieve the effect of oil washing.
  • Can cross-linked polyacrylamide microspheres swell in water?
  • It was found that the cross-linked polyacrylamide microspheres of 30–60 nm swelled in water, the particle size could be increased by 3–6 times, and the formed polydisperse system could still maintain the spherical structure.
  • How does polyacrylamide polymer flooding improve oil recovery?
  • Polyacrylamide polymer flooding mainly achieves the improvement of oil recovery by injecting high molecular weight polyacrylamide into the injection water, reducing the mobility ratio of the flooding phase, increasing the viscosity of the oil–water phase, and increasing the sweeping coefficient of the flooding.
  • Does HPAM increase viscosity in partially hydrolyzed polyacrylamide solution?
  • From the average end-to-end distances of HPAM molecules in each partially hydrolyzed polyacrylamide solution system in Fig. 16, it can be seen that HPAM molecules maintain a relatively stretched state in the solution, and the hydrodynamic radius is large, which significantly increases the solution viscosity.