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- W2189136141 abstract "In some reservoirs, oil and water are produced at very high flow rate through zones of high permeability (super K). For this type of flows, inertial effects and formation of emulsion can limit the utility of standard models based on relative permeabilities. In order to study these effects, we have performed several series of experiments into two kinds of sand packs: water wet and of intermediate wettability (siliconate treatment). Velocities of oil and water were varied in a large range. Pressures were measured along the core and the average saturation were determined by weighting. The main results are the following: 1) inertial effects are observed for monophasic water flows, not for oil, due to its high viscosity (30 cp), 2) for all the velocities of oil and water, an emulsion with small oil droplets is produced; 3) using a standard approach to interpret the experiments leads to a single Kr curve for water but to a family of Kr curves of oil depending on velocities, 4) the effect of wettability on pressure drop is important, even if the capillary forces are negligible. It has been written that 75% of reservoirs are producing oil and water on the form of emulsion. Our results show that flow of emulsion cannot be described by standard relative permeabilities. The small size of the observed emulsion is favorable to an homogeneous fluid approach. However, additional research concerning modeling of flow of emulsion in porous media should be performed in order to predict the effective viscosity." @default.
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- W2189136141 date "2003-01-01" @default.
- W2189136141 modified "2023-09-27" @default.
- W2189136141 title "SCA2003-17 : EXPERIMENTAL RESULTS FOR HIGH FLOW RATES OF OIL-WATER THROUGH HIGH PERMEABILITY MEDIA" @default.
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