Gulf relief drill hits target; well to be plugged in days

NEW ORLEANS – A relief well drilled nearly 2.5 miles beneath the floor of the Gulf of Mexico has intersected BP’s blown-out well, a prelude to plugging it once and for all, the U.S government said late Thursday.

The final seal should happen by Sunday, five agonizing months after an explosion sank a drilling rig and led to the worst offshore oil spill in U.S. history.

Retired Coast Guard Adm. Thad Allen, the government’s point man on the oil spill, said in a statement that data shows the two wells are joined. The next step will be to pump mud and cement down through the relief well to seal the ruptured well permanently from the bottom.

The gusher was contained in mid-July after a temporary cap was successfully fitted atop the well. Mud and cement were later pushed down through the top of the well, allowing the cap to be removed. But the blown-out well cannot be declared dead until it is sealed from the bottom.

The April 20 blast sank the Deepwater Horizon rig, killing 11 workers and triggering the spill that eventually spewed an estimated 206 million gallons of oil into the Gulf. BP PLC is a majority owner of the well and was leasing the rig from owner Transocean Ltd.

The disaster caused an environmental and economic nightmare for people who live, work and play along hundreds of miles of Gulf shoreline from Florida to Texas. It also spurred civil and criminal investigations, cost gaffe-prone BP chief Tony Hayward his job and brought increased governmental scrutiny of the oil and gas industry, including a costly moratorium on deepwater offshore drilling that is still in place.

BP took some of the blame for the Gulf oil disaster in an internal report issued earlier this month. But in a possible preview of its legal strategy, it also pointed the finger at its partners on the rig.