Star-Like Branched Polyacrylamides by RAFT polymerization, Part II: Performance Evaluation in Enhanced Oil Recovery (EOR)

Benjamin Klemm, Francesco Picchioni, Patrizio Raffa*, Frank van Mastrigt

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

11 Citations (Scopus)
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Abstract

In the present study the performance of a series of star-like branched polyacrylamides (SB-PAMs) has been I investigated in oil recovery experiments to ultimately determine their suitability as novel thickening agent for enhanced oil recovery (EOR) applications. Hereby, SB-PAMs were compared with conventional linear PAM. The effect of a branched molecular architecture on rheology, and consequently on oil recovery was discussed. Rheological measurements identified unique properties for the SB-PAMs, as those showed higher robustness under shear and higher salt tolerance than their linear analogues. EOR performance was evaluated by simulating oil recovery in two-dimensional flow-cell measurements, showing that SB-PAMs perform approximately 3-5 times better than their linear analogues with similar molecular weight. The salinity did not influence the solution viscosity of the SB-PAM, contrarily to what happens for partially hydrolyzed polyacrylamide (HPAM). Therefore, SB-PAMs are more resilient under harsh reservoir conditions, which can make them attractive for EOR applications.

Original languageEnglish
Pages (from-to)8835-8844
Number of pages10
JournalIndustrial & Engineering Chemistry Research
Volume57
Issue number27
DOIs
Publication statusPublished - 11-Jul-2018
Event254th National Meeting and Exposition of the American-Chemical-Society (ACS) on Chemistry's Impact on the Global Economy - Washington
Duration: 20-Aug-201724-Aug-2017

Keywords

  • WATER-SOLUBLE COPOLYMERS
  • AQUEOUS-SOLUTION PROPERTIES
  • ASSOCIATING POLYACRYLAMIDES
  • HYPERBRANCHED POLYMERS
  • BETA-CYCLODEXTRIN
  • SOLUTION BEHAVIOR
  • ACRYLAMIDE
  • RHEOLOGY
  • CHEMISTRY
  • PROJECTS

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