A pressurized cylinder stand includes a base, a plurality of vertical supports coupled to the base, a safety plate that includes bores configured to fit over the respective plurality of vertical supports, and a plurality of nuts. The base includes a safety cap that includes a seat configured to support a pressurized cylinder that encloses a pressurized hydrocarbon fluid. Each of the plurality of vertical supports includes a threaded portion and an unthreaded portion. The safety plate includes a slot sized to receive a base of the pressurized cylinder. At least two lower nuts are configured to engage the threaded portions of respective vertical supports in contact with a bottom surface of the safety plate. At least two upper nuts are configured to engage the threaded portions of respective vertical supports in contact with a top surface of the safety plate, such that the base of the pressurized cylinder is secured within the slot of the safety plate.

A natural gas energy storage system can comprise a high-pressure subterranean reservoir and a low-pressure subterranean reservoir. The high-pressure subterranean reservoir and the low-pressure subterranean reservoir can be configured to respectively receive and contain high-pressure natural gas and low-pressure natural gas. Said reservoirs can be coupled by a natural gas compression assembly and an energy recovery assembly to generate electricity. The natural gas compression assembly can be configured to recover natural gas from the low-pressure subterranean reservoir, compress the same to produce the high-pressure natural gas, and inject said gas into the high-pressure subterranean reservoir, during surplus periods. The energy recovery assembly can be configured to recover a portion of the high-pressure natural gas from the high-pressure subterranean reservoir, expand the same to generate energy and produce the low-pressure natural gas, and supply said gas into the low-pressure subterranean reservoir, during deficit periods.

cryogenic vessel includes a shell, an inner vessel and a thermal insulation layer arranged on a periphery of the inner vessel, a gap is provided between the shell and the inner vessel to form a sandwich space in a vacuum environment. The pressurizing device includes a fixing member, a protruding member, a heat conducting member, an operating member and a connecting member.

The present description relates to an adsorbent monolith, method to make the adsorbent monolith, and a gaseous storage system that includes an adsorbent monolith according to the present disclosure. In particular, the adsorbent monolith includes adsorbent, a binder, and a scaffold material.

A system to maintain an inert ullage in a hydrocarbon tank. The system provides for outgassing/venting of ullage gases when a high pressure event is found within the tank. Further, when a low pressure event occurs, during fuel discharge or based on ambient conditions, a source of inert gas, such as nitrogen) supplies gas on-demand to the hydrocarbon tank via a pressure regulator (preferably along the venting system) to maintain both the pressure and inerting of the ullage. A method for maintaining the inert ullage is also provided, whereby a low pressure event triggers a supply of inert gas into the tank.

A method of transporting natural gas by liquefaction of natural gas at ambient temperature, achieved by mixing the natural gas at high pressure with a hydrocarbon that is a stable liquid at ambient temperature and ambient pressure. The hydrocarbon liquid may be crude oil or a distillate of crude oil. The method includes: liquefaction: mixing the natural gas with the hydrocarbon liquid at an ambient temperature and a high pressure to generate a liquid mixture, which contains the natural gas dissolved in the hydrocarbon liquid; shipping: transporting the liquid mixture using a marine tanker, during which the liquid mixture is maintained at ambient temperature and the high pressure; and regasification: at the destination, releasing a gas from the liquid mixture by lowering the pressure of the liquid mixture. The hydrocarbon liquid may be used multiple times.

The present invention relates to a boil-off gas re-liquefying system and a ship including the same, the system, as a system for processing a liquefied gas, which is a heavy hydrocarbon, including: a compressor compressing a boil-off gas generated from a liquefied gas storage tank in multiple stages; a condenser condensing the boil-off gas compressed in the compressor; an intercooler mutually heat-exchanging between a part of the liquid-phase boil-off gas condensed in the condenser and the rest, transferring a gas-phase boil-off gas generated by heat exchange to the compressor, and transferring the liquid-phase boil-off gas to the liquefied gas storage tank; and a liquefied gas pump pressurizing the liquefied gas of the liquefied gas storage tank, wherein the liquefied gas pump transfers a liquefied gas to the intercooler to liquefy the gas-phase boil-off gas in the intercooler.

A method for subsurface gas storage including injecting a hydrogen stream into a subsurface reservoir for storage during periods of low sales demand, mixing the hydrogen stream in the subsurface reservoir with a stored gas, and removing the hydrogen from the subsurface reservoir during high sales demand.

A method of transporting natural gas by liquefaction of natural gas at ambient temperature, achieved by mixing the natural gas at high pressure with a hydrocarbon that is a stable liquid at ambient temperature and ambient pressure. The hydrocarbon liquid may be crude oil or a distillate of crude oil. The method includes: liquefaction: mixing the natural gas with the hydrocarbon liquid at an ambient temperature and a high pressure to generate a liquid mixture, which contains the natural gas dissolved in the hydrocarbon liquid; shipping: transporting the liquid mixture using a marine tanker, during which the liquid mixture is maintained at ambient temperature and the high pressure; and regasification: at the destination, releasing a gas from the liquid mixture by lowering the pressure of the liquid mixture. The hydrocarbon liquid may be used multiple times.

Systems and method for controlling wellsite equipment, including pumps and a manifold having a low-pressure (LP) manifold, having LP ports with LP valves, and a high-pressure (HP) manifold, having HP ports with HP valves and bleed ports with bleed valves. The pumps are fluidly coupled with the LP manifold via LP conduits and with the HP manifold via HP conduits. Communication is established between a controller and the LP valves, the HP valves, the bleed valves, the pumps, and sensors for monitoring pressure within the HP conduits. The controller is operable to, with respect to each pump, cause the LP valve to transition to a closed position, cause the HP and/or bleed valve to transition to an open position, and determine that the HP conduit is not pressurized based on the information generated by the sensors.