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Adsorption from flooding solutions in porous media: a study of interactions of surfactants and polymers with reservoir minerals. Annual report

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Past studies on the interactions of sulfonates with dissolved inorganics showed that sulfonates precipitated by multivalent ions can undergo redissolution upon increasing either the sulfonate or NaCl concentration. At higher sulfonate and NaCl levels the surfactant reprecipitated. These studies also showed redissolution to occur only in the presence of micelles. The role of mechanisms involving such factors as complexation seems to be minimal under the conditions studied. Since the phenomenon of redissolution can be beneficially used for minimizing the surfactant loss due to precipitation, investigation of this phenomenon was continued during the current year. The objectives of this study were to develop a quantitative understanding of the molecular mechanisms involved and to formulate a model with predictive capabilities for the precipitation behavior of surfactant/inorganic ions systems. Towards this purpose, precipitation/redissolution/reprecipitation behavior of sulfonates was studied as a function of relevant variables including surfactant and salt concentration, surfactant chain length, alcohol and oil concentration and temperature.

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Last Updated September 29, 2016, 15:54 (LMT)
Created September 29, 2016, 15:54 (LMT)
Citation Somasundaran, P. ---- Roy Long, Adsorption from flooding solutions in porous media: a study of interactions of surfactants and polymers with reservoir minerals. Annual report, 2016-09-29, https://edx.netl.doe.gov/dataset/adsorption-from-flooding-solutions-in-porous-media-a-study-of-interactions-of-surfactants-and-pol0
Netl Product yes
Poc Email Roy.long@netl.doe.gov
Point Of Contact Roy Long
Program Or Project KMD
Publication Date 1981-6-1