Obama official: 'Very close' to containing Gulf of Mexico oil well

The long-leaking deepwater well that spewed massive amounts of oil into the Gulf of Mexico is "very close" to being permanently sealed, a top Obama administration official said Wednesday.

The optimism was accompanied by BP's announcement Wednesday that the static kill technique, which pumps heavy mud into the busted well, appeared to be working.

"It's very close, in terms of containing the well," said Carol Browner, the Obama administration's energy czar, noting that no oil is leaking. BP capped the well last month, stopping the flow; the static kill is part of a more permanent solution.

Browner was careful to caution that while the well may soon be sealed, the environmental response effort to the thousands of gallons spewed into the Gulf would continue as long as necessary.

"We do feel like this has been an important turning point," she said on ABC's "Good Morning America."

BP is looking to kill the well sometime this month, according to The New York Times, more than 100 days since the initial explosion that triggered the leak and worst oil spill in U.S. history.

Browner, meanwhile, said that relief wells being drilled "could be done in as little as two weeks."

This post was updated at 10:46 a.m.