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Characterizing returning polymers in hydraulic-fracturing flowback and produced water: Implications for colloid formation (includes associated erratum)

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dc.contributor.authorVon Gunten, K.
dc.contributor.authorSnihur, K. N.
dc.contributor.authorMcKay, R.
dc.contributor.authorKenney, Janice
dc.contributor.authorSerpe, Michael
dc.contributor.authorAlessi, Daniel S.
dc.date.accessioned2021-12-21
dc.date.accessioned2022-05-31T01:44:57Z
dc.date.available2022-05-31T01:44:57Z
dc.date.issued2021
dc.description.abstractPartially hydrolyzed polyacrylamide (PHPA) friction reducer was investigated in produced water from hydraulically fractured wells in the Duvernay and Montney Formations of western Canada. Produced water from systems that used nonencapsulated breaker had little residual solids (<0.3 g/L) and high degrees of hydrolysis, as shown by Fourier-transform infrared (FTIR) spectroscopy. Where an encapsulated breaker was used, more colloidal solids (1.1–2.2 g/L) were found with lower degrees of hydrolysis. In this system, the molecular weight (MW) of polymers was investigated, which decreased to <2% of the original weight within 1 hour of flowback. This was accompanied by slow hydrolysis and an increase in methine over methylene groups. Increased polymer-fragment concentrations were found to be correlated with a higher abundance of metal-carrying colloidal phases. This can lead to problems such as higher heavy-metal mobility in the case of produced-water spills and can cause membrane fouling during produced-water recycling and reuse.
dc.description.urihttps://library.macewan.ca/full-record/edswsc/000641723900003
dc.identifier.citationVon Gunten, K., Snihur, K. N., McKay, R., Kenney, J. P. L., Serpe, M., Alessi, D. S. (2021). Characterizing returning polymers in hydraulic-fracturing flowback and produced water: Implications for colloid formation (includes associated erratum). SPE Journal, 26(2), 563-590. https://doi.org/10.2118/203848-PA
dc.identifier.doihttps://doi.org/10.2118/203848-PA
dc.identifier.urihttps://hdl.handle.net/20.500.14078/2522
dc.languageEnglish
dc.language.isoen
dc.rightsAll Rights Reserved
dc.subjectdrilling fluid chemistry
dc.subjectshale gas
dc.subjectdrilling fluid property
dc.subjectproppant
dc.subjectcomplex reservoir
dc.subjectdrilling fluid formulation
dc.subjectupstream oil & gas
dc.subjectdrilling fluid selection and formulation
dc.subjectdrilling fluids and materials
dc.subjectfracturing fluid
dc.titleCharacterizing returning polymers in hydraulic-fracturing flowback and produced water: Implications for colloid formation (includes associated erratum)en
dc.typeArticle

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Department of Physical Sciences