Summary
Working gas in storage was 3,496 Bcf as of Friday, September 14, 2012, according to EIA estimates. This represents a net increase of 67 Bcf from the previous week. Stocks were 320 Bcf higher than last year at this time and 278 Bcf above the 5-year average of 3,218 Bcf. In the East Region, stocks were 76 Bcf above the 5-year average following net injections of 44 Bcf. Stocks in the Producing Region were 150 Bcf above the 5-year average of 974 Bcf after a net injection of 20 Bcf. Stocks in the West Region were 52 Bcf above the 5-year average after a net addition of 3 Bcf. At 3,496 Bcf, total working gas is above the 5-year historical range.

Working gas stocks in the Producing Region, for the week ending September 14, 2012, totaled 1,124 Bcf, with 217 Bcf in salt cavern facilities and 907 Bcf in nonsalt cavern facilities. Working gas stocks increased 10 Bcf in the salt cavern facilities and increased 10 Bcf in the nonsalt cavern facilities since September 7. An historical series of the salt and nonsalt subtotals of the Producing Region is available for download at: wngsr_producing_region_salt.xls.

http://ir.eia.gov/ngs/ngs.html