Restriction of Water Production in Gas Wells Using Water Sensitive Microemulsions

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