Wet powder seal for gas containment

Details Wet powder seal for gas containment Wet powder seal for gas containment

1979-08-29

1982-01-19

Taylor, Dennis L.

Hydraulic and earth engineering

Fluid control, treatment, or containment

405154, 405 57, 138 97, E02D 314

Patent

active

043114091

ABSTRACT:
A gas seal is formed by a compact layer of an insoluble powder and liquid filling the fine interstices of that layer. The smaller the particle size of the selected powder, such as sand or talc, the finer will be the interstices or capillary spaces in the layer and the greater will be the resulting sealing capacity, i.e., the gas pressure differential which the wet powder layer can withstand. Such wet powder seal is useful in constructing underground gas reservoirs or storage cavities for nuclear wastes as well as stopping leaks in gas mains buried under ground or situated under water. The sealing capacity of the wet powder seal can be augmented by the hydrostatic head of a liquid body established over the seal.

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