What Happened to the Big Chevron Oil Discovery in the Gulf of Mexico?

In the Fall of 2006, this story hit about the discovery of a huge amount of Oil by Chevron in the Gulf of Mexico. I know it takes years to get this oil to market, but in this time where we seem to have an “oil crisis” as said on CNBC, you’d think that you’d hear all about the status of that discovery. They said it was supposed to increase the supply in the United States by 50%. There were also other major discoveries in 2006. Since 2006, I haven’t been able to find any information on these major finds at all. Was it not as big as we thought? Is there a cover up? What happened?