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The picture below illustrates the various types of geologic formations used for underground natural gas storage. As noted, the majority of underground gas storage facilities make use of depleted oil and gas fields. Other facilities are found...
PHMSA is reaching out to state entities who have the safety authority over the downhole portion (wells/reservoir/salt cavern) of intrastate natural gas underground storage facilities to participate in our underground storage safety program. To participate, state...
When transmission pipelines traverse through areas of high consequence to people, property or the environment, they are required to follow PHMSA's Integrity Management (IM) requirements. An IM approach identifies specific threats to the pipeline that operators must address through a plan to...
On October 23, 2015, an underground natural gas storage well, Southern California Gas Company’s (SoCal Gas) Aliso Canyon Well SS25, failed. The failure resulted in a sustained and uncontrolled natural gas leak in an area known as Porter Ranch in Los Angeles, California. Over 5,000...