Federal Eminent Domain Blog

The Right Definition of Storage Gas?

Underground storage gas falls in two categories according to FERC. It is defined in the manner set below:

Working gas (top gas) - volume of gas in the reservoir above the designed level of cushion gas. If the conditions allow it, a percentage or all of the working gas capacity could be injected and withdrawn more than once during any season.

Cushion gas (base gas) - the volume of gas, including native gas, needed as a permanent inventory in a storage reservoir to maintain adequate reservoir pressure and deliverability rates throughout the withdrawal season.


Given the changes created by fracking and other drilling methods, on must wonder whether the FERC definition still make sense.

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