Abstract HTML Views: 536 PDF Downloads: 238 Total Views/Downloads: 856
Abstract HTML Views: 330 PDF Downloads: 160 Total Views/Downloads: 556
Aiming to obtain a type of oil displacement with both surface activity and polymer performances, this paper,
basing on mixing initiators at low temperatures, proposed a type of anion-nonionic surface-active polymer oil displacement
agent (ANSP-1) by introducing polymerizable anion-nonionic surfmer (ANS-1), acrylamide (AM) and acrylic acid
(AA). Structure of ANSP-1 was measured by FTIR. Laboratory studies show that: ANS-1 graft copolymerization occurs
with AM, it avoids chromatographic separation, and it has better performances on molecular properties, such as tackifying
performance, salt resistance, shear resistance and thermal stability. Oil-water interfacial tension can reach 1×10-1 mN/m.
Field application shows that average recovery ratio of the test wells which used ANSP-1 is 11%, which is 6.2% higher
than the whole area.