Polyacrylamide for Oil Displacement (EOR)

Polyacrylamide for Oil Displacement (EOR)

Polyacrylamide for Oil Displacement (EOR)

PAM is used as oil displacement agent in the methods of tertiary oil recovery to improve oil recovery.


PAM is used as oil displacement agent in the methods of tertiary oil recovery to improve oil recovery. The function of polymer is to adjust the rheological property of injected water, increase the viscosity of driving fluid, improve the wave efficiency of water drive, reduce the permeability of water phase in formation, and make water and oil flow forward uniformly.

When micelle/polymer flooding is used, microemulsion with ultra-low interfacial tension composed of surfactant and additives is injected into injection wells, then polymer solution is injected, and finally water is injected. Water moves forward as plunger flow, displaces residual oil dispersed in the pore, and improves oil recovery. PAM used in three mining generally contains 10% to 50% wave base, and its molecular weight ranges from hundreds of thousands to tens of millions.

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