Injection of mixtures into subterranean formations
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United States of America Patent
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Aug 31, 1999
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app pub date -
May 2, 1995
filing date -
Aug 31, 1992
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Abstract
This invention relates to an environmental engineering process for injecting a mixture into the ground to act as a containment barrier for fluids or gases or to act as in situ waste remediation process. The process involves pumping a mixture into the ground so that the mixture penetrates from the injection source(s), to form overlapping and/or intersecting horizontal or vertical planar geometries. Control of the geometry of the propagating fracture is made by the down hole outlet design and by interactively modifying mixture composition, injection pressures and flow rates, according to the sequential calculation of the in situ injected geometry by an inverse or tomographic method from monitored response of detection devices.
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