Hydraulic and earth engineering – Earth treatment or control – Chemical
Patent
1987-01-05
1991-07-09
Taylor, Dennis L.
Hydraulic and earth engineering
Earth treatment or control
Chemical
405271, 405281, E02D 312
Patent
active
050300369
ABSTRACT:
A method of isolating a contaminated geological formation or aquifer is disclosed in which the formation is encapsulated by impermeable barriers. A grid of wells is drilled into the formation. A horizontal barrier is formed below the contaminated formation by creating an overlapping pattern of horizontally-oriented fractures filled with polymer radiating from each of these wells. A horizontal barrier may also be formed above the top surface of the contaminated formation if necessary. A ring of boundary wells may also be drilled surrounding the contaminated formation. The strata around each boundary well are fractured, and a polymer is then injected to form a vertical barrier around the periphery of the contaminated formation. In addition, water may be injected under pressure into guard wells between the contaminated formation and the vertical and/or horizontal barriers to further reduce any migration of pollutants into neighboring formations.
REFERENCES:
patent: 3309141 (1967-03-01), Fitch et al.
patent: 3690106 (1972-09-01), Tregembo et al.
patent: 4311340 (1982-01-01), Lyons et al.
patent: 4634187 (1987-01-01), Huff et al.
Axen Steven G.
Baughman David R.
Huff Ray V.
ISL Ventures, Inc.
Ricci John
Taylor Dennis L.
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