发明名称 |
Soil vapor well construction |
摘要 |
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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申请公布号 |
US5115866(A) |
申请公布日期 |
1992.05.26 |
申请号 |
US19910642905 |
申请日期 |
1991.01.18 |
申请人 |
K N ENERGY, INC. |
发明人 |
CORTE, LAWRENCE J.;BROWN, ADRIAN |
分类号 |
B09C1/00;E21B33/03;E21B43/04;E21B43/12;E21B43/18 |
主分类号 |
B09C1/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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