Because of the rising demand for gas and oil, natural gas distribution firms have had to devise alternate methods to ensure that natural gas is available during peak consumption, peak demand, and possible outages throughout the year. One of these concepts entails the use of big capacity aboveground or subway gas storage units with sufficient injection and production rates to meet market demands. Subway or above-ground gas storage units are also a backup alternative for ensuring continuous flow in the event of national pipeline system breakdowns or outages.
Distribution and production businesses in the United States and Europe have traditionally employed three types of subway natural gas storage units:
In a second level, adaptations of subway salt formations that, due to their structure, allow confining gas volumes efficiently without appreciable losses, as well as high injection and production rates to be used in short periods of time and at any time; fi
Various specialists are in favor of repurposing salt caves to store large amounts of oil. New holes are even being dug in salt mines in the United States to develop massive renewable energy storage facilities. Facilities with astronomical capacities of up to 150,000 MWh, or almost 150 times the entire energy storage capacity in Li-Ion batteries now used on US land.
Salt caverns can hold less oil than depleted reservoirs, but they can produce more gas and oil at a faster rate, allowing for more cycles. The purpose of this type of storage unit is to meet peak demand. To be suited for oil storage in salt caverns
must be consistent and deep enough to resist the appropriate pressures The amount of basic gas required is between 20 and 30%. The injection time ranges from 20 to 40 days, whereas the production time ranges from 10 to 20 days. This sort of storage uses an average storage volume of roughly 500,000 cubic meters.
Caverns can be drilled through salt domes and water injected into the rock, causing the salt to dissolve. The brine is then evacuated, leaving a big cavity behind. The cavern must now be used to store oil.
The design specifications, capacity, and maximum and minimum storage pressure are used to determine the salt cavern oil storage type. As a result, drilling an exploratory well is the initial step in determining the mechanical parameters of the salt formation.
Leaching work is usually done in the exploratory well. During leaching, mathematical models based on seismic testing and exploration will govern the salt cavern oil storage development.
Boreholes are drilled when the salt formation is located, and water is run over the salt interval to dissolve it as brine, and then the gas is injected to be stored.
Well productivity can be 3 to 4 times that of wells in conventional reservoirs, storage capacity can be expanded by leaching other caverns, low base gas volume for high extraction rates, high level of safety, full recovery of base gas, need for a suitable salt formation, brine disposal problems under censure Using these caves to store oil or other components is not novel, but there was no compelling need to do so. Salt caves are ten times less expensive than underground storage tanks and twenty times less expensive than regular rock mining. Home improvement