Deepwater Horizon drilling rig explosion
Oil spill
Discovery, denial, and admission of oil spill
On the morning of April 22, (a day celebrated in more than 175 countries as Earth Day) CNN quoted Coast Guard Petty Officer Ashley Butler as saying that "oil was leaking from the rig at the rate of about 8,000 barrels of crude per day." That afternoon, as a large oil slick spread, Senior Chief Petty Officer Michael O'Berry told CNN that a submersible crew had been unable to cap the well and that, based on the rig's previous daily production, up to 336,000 gallons of oil a day could spill into the Gulf. Butler warned of a leak of up to 700,000 gallons of diesel fuel, and BP Vice President David Rainey termed the incident as being a potential "major spill."
BP on April 22 announced that it was deploying an unmanned submarine (or ROV) to the site to assess whether oil was flowing from the well. Other reports indicated that BP was using more than one ROV and that the purpose was to attempt to plug the well pipe.
The next day, April 23, a Reuters article titled "Oil spill not growing" referred to an unnamed "spokeswoman" and an ROV that "found no oil leaking from the sunken ... rig and no oil flowing from the well." Coast Guard Rear Adm. Mary Landry, interviewed by CBS, and specifically asked how much oil was emanating from the ocean floor wellhead or the broken pipes or risers, stated that no oil was emanating from either. On another TV interview the same day, Landry stated, "The fact that there is no oil spilled other than that small amount we were able to work with, that's a good thing," and expressed "cautious optimism" of zero environmental impact. Subsequently, news stories of April 23 quoted Admiral Landry as saying that no oil appeared to be leaking from either the undersea wellhead or at the water's surface, and that oil spilled from the explosion and sinking was being contained.
The following day, April 24, Landry announced that a damaged wellhead was leaking oil into the Gulf. Landry described it as "a very serious spill, absolutely." However, an AOL financial writer questioned whether it was a "serious" spill.
http://en.wikipedia.org/wiki/Deepwater_Horizon_drilling_rig_explosion#Oil_spill