Detection and quantification of residual oil in reservoirs to determine viability for additional oil recovery remains a challenge. We have developed polymeric nanoparticles capable of controlled release of oil soluble small molecule indicators. These nanoparticles are synthesized by cross-linking micelles and are stable and soluble at the high temperatures and salinities present downhole and show low adsorption on relevant sandstone rocks. Here we demonstrate that upon contact with oil, these nanoparticles release indicators at a constant rate, allowing us to determine the amount and type (i.e. aromatic or aliphatic) of oil encountered. In addition, the rate of release can be tuned by varying the degree of cross-linking as well as the type of cross-linker used.

Designing polymeric nanoparticles for hydrocarbon detection in oil fields

247th National Meeting (2014)

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