Hydraulic and earth engineering – Soil remediation – In situ contaminant removal or stabilization
Patent
1998-06-03
1999-12-07
Taylor, Dennis L.
Hydraulic and earth engineering
Soil remediation
In situ contaminant removal or stabilization
405131, 588252, B09B 300, E02D 311
Patent
active
059972149
ABSTRACT:
A method is provided to remove volatile liquid contaminates from a contaminated volume of earth, the contaminated volume lying above a noncontaminated layer of earth, the method including the steps of: penetrating the contaminated volume with at least one wellbore so that a wellbore penetrates the contaminated volume and at least one wellbore penetrates the noncontaminated layer; applying heat from the wellbore within the noncontaminated layer to the noncontaminated layer until the temperature of a substantial portion of the noncontaminated layer that is contiguous with the contaminated layer is at least the boiling point temperature of contaminated liquids; and applying heat from the wellbore within the contaminated volume to the contaminated volume wherein the temperature of the contaminated volume rises to the boiling point of contaminated liquids after a substantial portion of the noncontaminated layer that is contiguous with the contaminated layer is about the boiling point of the contaminated liquids.
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International Search Report dated Sep. 22, 1998.
de Rouffignac Eric
Vinegar Harold J.
Shell Oil Company
Taylor Dennis L.
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