The Bureau of Safety and Environmental Enforcement (BSEE) Hurricane Response Team reported earlier that some 78% of crude oil and 48.3% of the natural gas production has been shut-in by Tropical Storm Isaac (soon to be Hurricane Isaac).  As of 3:00 PM EST this probably became 80% of oil and over 50% of that natural gas production.  There are many other companies of course which are affected, but this has companies such as BP plc (NYSE: BP), Exxon Mobil Corp. (NYSE: XOM), Chevron Corp. (NYSE: CVX), Apache Corp. (NYSE: APA), and Royal Dutch Shell PLC (NYSE: RDS-A) all on watch.

• Personnel have been evacuated from a total of 346 production platforms, equivalent to 58.05 percent of the 596 manned platforms in the Gulf of Mexico.
• Personnel have been evacuated from 41 rigs, equivalent to 53.9 percent of the 76 rigs currently operating in the Gulf.
• It is estimated that approximately 78.02 percent of the current daily oil production in the Gulf of Mexico has been shut-in and that approximately 48.13 percent of the current daily natural gas production in the Gulf of Mexico has been shut-in.

As a reminder, here is a map of the oil and gas offshore infrastructure tracked by NOAA: