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- W2205408573 abstract "Channeling of injected water through high permeability zones in heterogeneous reservoir sands results in low sweep efficiency. Oil-in-water emulsions prepared from petroleum crude oils possess properties that satisfy the requirements of a deep penetrating plugging agent in waterfloods. Oil-in water emulsions are easily prepared from petroleum crude oils. The prepared emulsions have low viscosities even though the crude oils may have high viscosities. When emulsion is flowed into sandstone cores, the droplet sizes are such that they filter out and effectively reduce water permeabilities of sandstones having initial water up to about 2 darcies. In flow through porous media, oil-in-water emulsions show non-Newtonian behavior; they flow easier under high pressure drop. Because of this non-Newtonian property, oil-in-water emulsions can be displaced into water-injection wells without greatly increasing surface pressures compared with water alone. As the emulsion penetrates a greater distance from the well bore, the pressure gradient becomes less and the plugging effect of the emulsion becomes greater. (10 refs.)" @default.
- W2205408573 created "2016-06-24" @default.
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- W2205408573 date "1972-01-01" @default.
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- W2205408573 title "Oil-in-water emulsions improve fluid flow in porous media" @default.
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