Title: Method of sealing the rock around a rock chamber intended for a medium, the temperature of which is below the natural temperature of the rock

Abstract: Rock chambers are used for storing liquids and gases, e.g. natural gas, at low temperatures. To prevent leakage through cracks in the rock surrounding the rock chamber the invention provides a method of sealing the rock by injecting a sealing agent through drill holes in the rock. The sealing agent solidifies owing to the lower temperature of the rock and/or stored medium. The injection is continued as long as the cracks change owing to changes of temperature. Some of the drill holes or parts thereof are placed outside the zone where the sealing agent solidifies.

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Inventors: Janelid, Erik Ingvar (Djursholm, SW)
Morfeldt, Carl-Olof Oskar (Lidingo, SW)

Application Number: 487763
Filing Date: 1974-07-11
Publication_date: 1976-01-27
Assignee:
Primary Class(es): 405/56 405/130, 405/269
Other Classes:
US Patent Ref:

528367	Oct, 1894	Harris	61/36.
2928247	Mar, 1960	Hubbell	61/.
2932170	Apr, 1960	Patterson et al.	61/.
2947146	Aug, 1960	Loofbourow	61/36.
3026096	Mar, 1962	Love	61/36.
3058316	Oct, 1962	Toche	61/.
3063246	Nov, 1962	Dougherty	61/.
3094846	Jun, 1963	Peeler	61/36.
3468129	Sep, 1969	Knutson	61/36.
3649574	Mar, 1972	Cole	61/36.
3667236	Jun, 1972	Rosene	61/11.

Other Refs: 225,620117,212

Jan, 1963	OE
Sep, 1946	SW

Primary Examiner: Taylor, Dennis L.
Assistant Examiner:
Attorney: Toren, McGeady and Stanger