Method of covering the sump of underground cavities

Details Method of covering the sump of underground cavities Method of covering the sump of underground cavities

1981-06-02

1983-09-13

Corbin, David H.

Hydraulic and earth engineering

Fluid control, treatment, or containment

Fluid storage in earthen cavity

405 59, B65G 500

Patent

active

044038879

ABSTRACT:
A method of covering the sump of underground cavities which serve to store gaseous or liquid non-aqueous substances. The sump is covered with a layer of highly viscous crude oil which is at least 1 cm, and preferably 20 to 50 cm, thick. The crude oil contains not more than 7% hydrocarbons having up to 5 C atoms in a molecule thereof. The crude oil has a specific gravity of 20.degree. C. of at most 1.2 g/cm.sup.3.

REFERENCES:
patent: 3095263 (1963-06-01), Eckert et al.
patent: 3745770 (1973-07-01), Fraser et al.
patent: 4147658 (1979-04-01), Savoit et al.
patent: 4209271 (1980-06-01), McCabe et al.

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