Laboratory Evaluation and Field Application of a Type of Surface-Active Polymer Oil Displacement Agent
Xiangbo Wei*, Xiaorui Li, Lei Wang, Guoyan Ma, Jinhao Gao
Identifiers and Pagination:Year: 2014
First Page: 130
Last Page: 136
Publisher Id: TOPEJ-7-130
Article History:Received Date: 16/09/2014
Revision Received Date: 23/12/2014
Acceptance Date: 31/12/2014
Electronic publication date: 31/12/2014
Collection year: 2014
open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: https://creativecommons.org/licenses/by/4.0/legalcode. This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
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 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.