Individual square shaped modules used in an assembly for underground storage of storm water and other fluid storage needs. Modules are assembled into a resultant square tilling shape for maximized structural strength and material use efficiency. Internal square shaped modules are assembled and encased by external square shaped modules. Internal adjacent modules are in direct fluid communications with one another through a channel-less chamber. Internal square shaped modules drain into square shaped modules chamber where fluid is either stored or drained. Assemblies include various top and side pieces along with access ports for entry into said assembly.

A system for storing materials in an earthen subterranean formation includes a wellbore extending from a terranean surface into the subterranean formation, the wellbore extending from an uphole end at the terranean surface to a longitudinally opposing downhole end, a casing string extending through the wellbore, wherein the casing string is cemented in place in the wellbore, a subterranean storage chamber formed in a salt deposit of the subterranean formation and fluidically connected to the wellbore, the storage chamber at least partially filled with brine and having a lateral width that exceeds a vertical height of the storage chamber, wellbore-transportable foreign material that is stored in the storage chamber.

Method and apparatus for standby fuel storage and use to provide uninterrupted power generation by a power generation mechanism. An infrastructure pipeline supplies natural gas at a selected flow rate and a selected pressure as a primary fuel. A secondary fuel is accumulated in a plurality of sub-surface storage pods. In response to an exception event such as a curtailment order, a controller throttles a subsequent flow of the natural gas from the infrastructure pipeline so that the natural gas continues to flow to the power generation mechanism at a reduced flow rate, and blends the reduced flow of the natural gas with the secondary fuel. The secondary fuel can be an additional quantity of natural gas, hydrogen, or some other fuel. Renewable energy sources such as wind or solar can be used to generate the hydrogen, even during the blending process. The blend ratio can be adaptively adjusted.

A cryogenic tank system includes a plurality of heat exchangers for heating an interior volume of a storage container. Heat transfer to the interior volume of the storage container by the plurality of heat exchangers pressurizes the interior volume of the storage container. The system further includes a valve assembly mounted to the storage container and positioned substantially within the storage container. The valve assembly includes an inlet portion and an outlet portion. The outlet portion is positioned outside of the storage container, and the inlet portion is positioned within the storage container. The inlet portion is sealable by a fail-closed powered sealing mechanism.

The present invention provides a groove-type skeleton, a sealed lining structure, an underground gas storage, which belong to the technical field of compressed air energy storage. The groove-type skeleton includes a fixed bottom plate, which has a length direction and a width direction. The fixed bottom plate forms a semi-open receiving space along the length direction at the middle axis, and the top edge of at least one side of the semi-open receiving space extends inward to form a protrusion. The sealed lining structure includes an airtight layer and the groove-type skeleton. The underground gas storage includes a concrete lining layer and the sealed lining structure. The groove-type skeleton can be combined to form a sealed lining structure, which forms an underground gas storage. Its construction period is shorter than that of welded steel plates and its cost is lower.

A nitrogen blanket system for small fuel tanks is disclosed that includes tank empty-space pressure control for sealed tanks that can hold pressure. The system includes a fuel tank storing some volume of fuel, such as diesel fuel. The remaining empty volume is filled with nitrogen by the disclosed system. The nitrogen blankets the liquid fuel and fills the remaining space in the fuel tank to prevent the accumulation of moisture and thereby prevent corrosion within the fuel tank.

A production and transportation system for natural gas hydrates includes a gas storage reservoir, a plurality of hydrate storage and transportation tanks, a refrigerator, a pressure regulating valve, a liquid storage tank, a living quarter/surrounding user, a hydrate storage reservoir, a plurality of connecting pipes, a plurality of one-way gas valves, one-way liquid valves, and optional liquid pumps. The plurality of hydrate storage and transportation tanks are connected in parallel through the connecting pipes and then connected with an output end of the gas storage reservoir through the pressure regulating valve, the liquid storage tank is connected with the optional liquid pump and then sequentially connected with the plurality of hydrate storage and transportation tanks, and the plurality of hydrate storage and transportation tanks are connected in parallel and then connected with an input end of the living quarter/surrounding user through the optional liquid pump.

Method and apparatus for adaptively adjusting the storage of fuels for use in a fuel blending process. First and second fuels are stored in storage vessels at an initial volumetric fuel storage ratio. A storage controller executes a performance strategy to adaptively adjust at least one storage parameter in response to a predicted or detected change in operating conditions of the system. The performance strategy can include increasing a storage pressure of at least one of the fuels and/or changing a total number of storage vessels used to store the respective fuels. A dispensing mechanism transfers a blended fuel formed from the first and second fuels in accordance with the execution of the performance strategy. The fuels can take a variety of forms including hydrogen (H2), oxygen (O2), hydrocarbons, etc. The blended fuel may be dispensed by a fueling station to a motor vehicle.

Underground facilities built for storing electric energy in the form of gravity and buoyant energy are described herein. In one embodiment, the facility is disposed in a thixotropic fluid beneath the ground surface and houses water to maintain a positive buoyancy and a piston having a bulk density greater than the water. In another embodiment, the underground facility is configured as a buoyant capsule arranged in a cylinder filled with water, where the cylinder is sealed except for openings in a bottom half of the cylinder to allow near unimpeded water flow from a location inside to a location outside of the cylinder. In another embodiment, the underground facility is configured as a negatively buoyant capsule.

Method and apparatus for standby fuel storage and use to provide uninterrupted power generation by a power generation mechanism. An infrastructure pipeline supplies natural gas at a selected flow rate and a selected pressure as a primary fuel. A secondary fuel is accumulated in a plurality of sub-surface storage pods. In response to an exception event such as a curtailment order, a controller throttles a subsequent flow of the natural gas from the infrastructure pipeline so that the natural gas continues to flow to the power generation mechanism at a reduced flow rate, and blends the reduced flow of the natural gas with the secondary fuel. The secondary fuel can be an additional quantity of natural gas, hydrogen, or some other fuel. Renewable energy sources such as wind or solar can be used to generate the hydrogen, even during the blending process. The blend ratio can be adaptively adjusted.