Abstract:A novel
foaming polymer based on waterborne polyurethane (WPUFA)
was evaluated for foam-assisted chemical flooding. Compatibility study
showed that a solution of 0.5 wt % WPUFA was soluble, stable, and
produced foam in the concentration range of 1–11 wt % NaCl
at 25 and 60 °C. Moreover, the wettability of limestone significantly
improved due to the reduction of interfacial tension between WPUFA
solution and kerosene from 18.5 mN/m–1 to 5.8 mN/m–1 and a decrease in contact angle value from 88.6°
to 8.5° at 0.5 … Show more
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