Relief well restoration, systems and methods
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United States of America Patent
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Jun 1, 2021
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app pub date -
Jan 29, 2019
filing date -
Jan 29, 2019
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Abstract
Apparatuses and method to reduce a pore-water pressure of water within a subsurface formation below a first pressure, include creating a pressure discontinuity in a well for a first period of time. The pressure discontinuity is created using ambient ground water pressure. A ground water flow regulating device (GFRD) is used to create the pressure discontinuity such that the GFRD restricts ground water flow through the well, which causes a pressure below the GFRD to increase. A flow of ground water is released through the well casing after the first period of time under natural ground water pressure. The GFRD releases the flow of the ground water and the pore-water pressure decreases to a second pressure after the ground water is released and the second pressure is less than the first pressure, wherein a first purge cycle is accomplished.
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