As of Friday, the U.S. Bureau of Safety and Environmental Enforcement said workers had been removed from 86 of the 737 manned platforms used to pump oil and gas from beneath the gulf. The agency estimated that platforms accounting for about 22 percent of oil production and 23 percent of natural gas output in the gulf had been shut down.
On shore, ConocoPhillips stopped all operations in the Eagle Ford shale formation, which lies across a swath of South Texas inland from the gulf. A company spokeswoman cited safety and potential disruptions in getting oil and gas from the wells to market during the storm.