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The Open Petroleum Engineering Journal
(Discontinued)
ISSN: 1874-8341 ― Volume 12, 2019
Laboratory Evaluation and Field Application of a Type of Surface-Active Polymer Oil Displacement Agent
The Open Petroleum Engineering Journal , 2014, 7: 130-136
Xiangbo Wei, Xiaorui Li, Lei Wang, Guoyan Ma, Jinhao Gao
Key laboratory of Auxiliary Chemistry & Technology for Chemical Industry, Ministry of Education, Shaanxi University of Science & Technology, Xi'an City, Shaanxi, 710021, PR. China.
Electronic publication date 31/12/2014
[DOI: 10.2174/1874834101407010130]
Abstract:
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.