Process for transporting particles in a porous medium
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United States of America Patent
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Apr 5, 1994
Grant Date -
N/A
app pub date -
Jun 2, 1992
filing date -
Nov 9, 1989
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention relates to an improved method for injecting and transporting small particles in a natural porous medium. The method is characterized in that, in a first step, the porous medium is conditioned by means of an aqueous solution containing a hydrocarbonaceous compound, polymers or surface-active agents, in a second step, a plug of suspended particles is injected in the aqueous medium containing at least one hydrocarbonaceous compound, polymer or surface-active agent and, in a third step, the plug of particles is pushed by an appropriate aqueous medium. The method is particularly useful for implantation of bacteria in a porous medium.
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