| Popis: |
As a novelty, water sensitive water external microemulsions were developed, which are stable until they are diluted with water. Transformation of different metastable systems to stable macroemulsions in reservoir space having high water saturation may radically restrict the water flow and that is attributed to their high viscosity and entrapment of the dispersed particles by the pores. As dispersed phases, organic silicon compounds, ten-sides and natural crude oil fractions were tested. The transformation and structure of phases and size of particles were analyzed by photon correlation spectrometry, rheometry, while the flow properties were studied in natural sandstone systems. |
