The top kill effort of the well failed and now they are trying the junkshot option.However with low success probability either.
The top kill method consists of a mud and cement mixture being forced down the broken well in an effort to push the oil back and eventually stoping the flow of oil by means of drying/setting. It has a 60- to 70-percent chance of working, as the method has never been attempted at such depths. However, the latest reports has shown that this method has yet failed. The next attempt at Junkshot will actually be more difficult due to the mud blocking the junk shot particles from entering deep into the well, which essentially means that the Top Kill severed the Junk Shot probability.
The Top Kill failed because the oil basicly liquified the mud as such that it was seeping out of the well piping leaks.
The leak started more than a month ago, and the Gulf region has been declared a federal disaster — more than 20-percent of fisheries have been shut down.