A study of copolymers activity during the separation of water-in-oil emulsions

Felipe Sánchez-Minero, Gustavo Marroquín, Hugo Ortiz-Moreno, Juan Avendaño-Gómez

Research output: Contribution to journalArticlepeer-review


The activity of copolymers poly (propylene oxide)-poly (ethylene oxide) (PPO-PEO) with different amount of PEO (10 and 15 wt%) was studied on the separation of water from water-in-oil (W/O) emulsions. The results show an increase in the interfacial activity of the copolymer when PEO concentration was 15 wt%. However, the increase in molecular size of the copolymer due to high concentration of PEO may cause problems related to transport through the emulsion. Thus, while the PPO-PEO10 copolymer was more active for the separation of water present in the W/O emulsion of 6.4° API, which is highly viscous, the PPO-PEO15 copolymer was more effective for the W/O emulsion of 7.1° API, which is highly stable.

Original languageEnglish
Pages (from-to)257-263
Number of pages7
JournalPetroleum Science and Technology
Issue number3
StatePublished - 1 Feb 2017
Externally publishedYes


  • Copolymer
  • W/O emulsion
  • crude oil
  • separation
  • water


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