A few hours ago, Admiral Allen and BP made separate announcements that the Macondo well at Mississippi Canyon Block 252, has been successfully killed from the bottom by the relief well. After 2 months of keeping the relief well on hold while the BP/US government partnership undertook various high risk operations from the top of the well, they've finally completed the kill that should have be done long ago. They also announced that they will now permanently plug and abandon all the wells involved, including the Macondo well and the two relief wells. I would expect that BP will sell their interest in this property to another offshore operator for eventual redrilling and production of this large oil reservoir. For the first time since this crisis started, Allen called the well "dead". BP said that the casing and annulus were "sealed".
This catastrophe, lasting 152 days, killed 11 good men, spilled 5 million barrels of oil into the Gulf of Mexico, killing countless sea life and costing thousands of jobs has been an odyssey for everyone involved. BP was at all times opaque in its communication, spending tens of millions of dollars in public relations, pretending to be forthcoming when being everything but; the US government served as its enabler, even allowing BP to conceal key information including the actual flow rate of the well.
The environmental damage will take years to understand; the legal battles will also drag on for years. In the meantime, the deepwater industry has learned a lot from this disaster; let's hope they actually use this knowledge to make this kind of exploration safer so this never happens again.