Wells – Processes – Producing the well
Patent
1991-01-18
1992-05-26
Britts, Ramon S.
Wells
Processes
Producing the well
166 52, E21B 4300
Patent
active
051158663
ABSTRACT:
In accordance with this invention a soil vapor well for removing volatile hydrocarbons from the vadose zone is provided. The well comprises a larger diameter first bore hole extending from the surface of the earth for several feet and preferably to the base of the clay layer, an impervious casing having a smaller diameter than the first bore hole is mounted concentrically within the first bore hole and extends from the bottom of the first bore hole to a point above the surface of the earth. Concrete fills the space between the sides of the first bore hole and the casing to provide a substantially air-tight seal from the earth below the first bore to the surface of the earth. A second bore hole, having a diameter smaller than the diameter of the casing extends downwardly from the lower end of the casing to a point located above the water table. Aggregate fills the second bore hole and the casing. Means is connected to the upper end of the casing for drawing a vacuum to extract the volatile hydrocarbons from the surrounding portion of the vadose zone through the aggregate.
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Brown Adrian
Corte Lawrence J.
Britts Ramon S.
K N Energy, Inc.
Schoeppel Roger J.
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