Gas - Industry Activities
Natural Gas Storage - Underground Storage Facility
Gas in an underground storage facility is divided into two categories, working gas (top gas) and cushion gas (base gas).
Working gas (top gas) - the 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 If the Conditions allow it, a percentage or all of the working gas capacity could be injected and withdrawn more than once during any season.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.
For more detailed information about natural gas storage, visit the following websites:
|
![](https://webarchive.library.unt.edu/eot2008/20090116003015im_/http://www.ferc.gov/images/clear.gif) |
![](https://webarchive.library.unt.edu/eot2008/20090116003015im_/http://www.ferc.gov/images/cnr_tl_DBFADD.gif) |
![](https://webarchive.library.unt.edu/eot2008/20090116003015im_/http://www.ferc.gov/images/clear.gif) |
![](https://webarchive.library.unt.edu/eot2008/20090116003015im_/http://www.ferc.gov/images/cnr_tr_DBFADD.gif) |
|
Natural Gas Storage
General Information
Jurisdictional Storage Fields
Storage Projects
Certificated Storage Projects Since 2000
|
|
![](https://webarchive.library.unt.edu/eot2008/20090116003015im_/http://www.ferc.gov/images/cnr_bl_DBFADD.gif) |
![](https://webarchive.library.unt.edu/eot2008/20090116003015im_/http://www.ferc.gov/images/clear.gif) |
![](https://webarchive.library.unt.edu/eot2008/20090116003015im_/http://www.ferc.gov/images/cnr_br_DBFADD.gif) |
|