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| Number | Title | Issue Date |
| 4462714 | Method and apparatus for setting a cement plug in the wide-mouth shaft of an earth cavern The invention disclosed herein is a method and apparatus for setting a cement plug in the wide-mouth shaft of an earth cavern. The apparatus includes a deflated balloon with a liquid fill pipe therein. In practice, the cavern is first filled with a liquid... | 07/31/1984 |
| 4454721 | Constant-pressure air-storage cavern with hydralic pressure compensation for air-storage gas turbine power stations A constant-pressure air-storage cavern wherein the floor and the roof of the cavern are inclined at an acute angle with respect to the horizontal and the transition portion from the cavern into the air riser and into the water tunnel is expanded to form a... | 06/19/1984 |
| 4431341 | Construction of a concrete lined chamber A procedure for constructing a concrete lined underground chamber along a bore hole drilled within the earth. Such chambers serve as access work chambers for carrying out other various drilling and mining operations, such as, for example, horizontal drill... | 02/14/1984 |
| 4363563 | System for the storage of petroleum products and other fluids in a rock A system for the underground storage of fluids, e.g. petroleum products in rock. The system comprises a plurality of cavities excavated in the rock. Each of said cavities has a cylindrical shape with a circular or oval cross-section. Each cavity forms a s... | 12/14/1982 |
| 4343569 | Apparatus for preventing blowing out of the water supply of constant pressure air storage installations of gas turbine power plants An apparatus for preventing the blowing out of the water supply of constant pressure air storage installations for gas turbine power plants, which is intended to be installed as a preferably prefabricated unit at the upper end of a riser tube or pipe of a... | 08/10/1982 |
| 4326818 | Techniques for the storage of water Water is stored in a sub-surface reservoir that has flexible walls of grouted in situ soils. The water is stored in the voids between soil particles within the reservoir. Usable voids within the container vary from about 20% to about 40% of the totally en... | 04/27/1982 |
| 4239416 | Lined cavity in the earth A cavity in the earth such as a reservoir, tunnel or the like is lined with a flexible, fluid impervious sheet such as a rubberized fabric supported by a grid-like skeleton structure having distorted elongated resilient structural members which are under ... | 12/16/1980 |
| 4230368 | Method for displacing large blocks of earth A method for elevating extremely large blocks of earth by displacement with a slurry composed of water and locally excavated materials. The blocks are separated on lateral faces by variously drilling, jetting, fracturing, and kerf cutting operations. The ... | 10/28/1980 |
| 4200336 | Means for providing gas seal in production level drift for in situ oil shale retort An in situ oil shale retort is formed in a subterranean formation containing oil shale. The retort contains a fragmented permeable mass of formation particles containing oil shale. During retorting, oxygen-supplying gas is introduced into an upper level o... | 04/29/1980 |
| 4166709 | Method for vaulting hazardous chemical waste materials Hazardous chemical waste materials can be vaulted for permanent disposal by encapsulation in a water-impermeable film and a soil cement.... | 09/04/1979 |
| 4165945 | Method for storing fluid underground at maximum pressure p A method for storing fluid underground at maximum pressure p, comprising the steps of digging, at a depth at which the lithostatic pressure generated by the weight of the abovejacent soil formations is at least p, an underground cavity in which is made a ... | 08/28/1979 |
| 4136493 | Supporting structure for containers used in storing liquefied gas Liquefied gas is stored in a large rigid or semirigid cylindrical container. Between the walls and floor of this container and the walls and floor of an outer container, which may be an earthen cavity in which the container rests, is distributed a continu... | 01/30/1979 |
| 4112690 | Method and construction of underground tank well Subjacent and lateral supporting soil for an underground tank is stabilized wherein a tank embedded therein is secured against flotation irrespective of the water table level of the surrounding soil. The lateral supporting soil is encased within a well an... | 09/12/1978 |
| 4071161 | Cylindrical underground storage tank having particularly shaped end caps End caps of the tank are generally spherical adjacent the axis of the tank and frusto-conical adjacent the circumference of the tank to eliminate voids normally occurring in the backfill under fully hemispherical end caps.... | 01/31/1978 |
| 4015384 | Construction of tank A water and slurry storage tank of relatively large capacity comprising a cylindrical tank whose side wall is formed from a number of concrete pipes. Each concrete pipe is provided with a hole adjacent the base of the tank to communicate with the interior... | 04/05/1977 |
| 4011736 | Cold storage tank A cold storage tank is mounted in a pit in the ground. An outer plastic sheet barrier lines the pit. A lining of incompressible insulating material lines the interior surface of the outer barrier. An inner plastic sheet barrier lines the interior surfaces... | 03/15/1977 |
| 4010615 | Partially buried tanks for the storage of petroleum products A partially buried facility for the storage of petroleum products includes a liquid-tight equalization basin for containing water and an enclosure of at least partially dry terrain surrounding the basin, the enclosure being supported on a layer of imperme... | 03/08/1977 |
| 3998061 | Formation of cavities in the bed of a sheet of water In order to form galleries or other subterranean cavities in the bed of a sheet of water, for example for the construction of a subterranean reservoir for storing petroleum, or for exploiting submarine deposits, a floating structure, comprising at least o... | 12/21/1976 |
| 3958424 | Liquid lifting and storage apparatus and method A continuous outwardly spiralling vertically oriented web of glass or similar material is disclosed extending between a central core cylinder and a larger coaxial outer peripheral cylinder with adjacent convolutions of the web equidistantly spaced suffici... | 05/25/1976 |
| 3952531 | Cryogenic storage tanks A cryogenic storage tank characterised by the provision of a space between the outer walls of the tank and the ground surrounding same, and means for introducing heated air into said space at the lower regions thereof for flow upwardly therethrough.... | 04/27/1976 |
| 3943721 | Reservoir for storing hydrocarbon liquids and process for fabricating the same A reservoir for hydrocarbon liquids is formed by a hollow in the ground lined with a gas-tight sheet and covered by a roof floating on the liquid in the hollow, the roof comprising a non-metallic rigid body which is gas-tight and of low density, a meter c... | 03/16/1976 |
| 3930590 | Storage installation for liquefied gas In a storage installation for liquefied gas in a storage vessel surrounded by a wall which forms a collecting space around the vessel, the surfaces of the ground of the collecting space and/or the wall comprise a layer of a heat insulating material, where... | 01/06/1976 |
