- Associated Press - Thursday, July 22, 2010

ON THE GULF OF MEXICO | The temporary cap on BP’s ruptured oil well will stay closed even if ships evacuate the Gulf of Mexico during a tropical storm, the federal government’s spill chief said Thursday.

Growing confidence in the mechanical plug’s security convinced scientists it was safe to leave it unmonitored for a few days. Retired Coast Guard Adm. Thad Allen said said they will decide by early Friday whether dozens of ships in the area will leave.

“While this is not a hurricane, it’s a storm that will have probably some significant impacts, so we’re taking appropriate cautions,” Adm. Allen said.

Forecasters at the U.S. National Hurricane Center in Miami said the storm system already has caused flooding in Puerto Rico, the Dominican Republic and Haiti. It could become Tropical Storm Bonnie by early Friday and reach the Gulf of Mexico by Saturday.

If work crews are evacuated, it could be two weeks before they can resume the effort to permanently plug the well. That would upset BP’s timetable, which called for finishing the relief tunnel by the end of July and sealing the blown-out well by early August.

Seas already were choppy in the Gulf, with waves up to 5 feet rocking boats as crews prepared to leave if necessary. Some boats involved in the cleanup were called into port Thursday, Coast Guard Rear Adm. Paul Zukunft said.

He also directed workers to remove oil-absorbent booms from marsh areas along the coast to prevent damage to ecologically sensitive areas.

Work on plugging the well is at a standstill just days before the expected completion of a relief tunnel to permanently throttle the free-flowing crude.

Even if the storm does not hit the area directly, it could affect the effort to contain the oil and clean it up. Hurricane Alex stayed 500 miles away last month, yet skimming in Alabama, Mississippi and Florida was curtailed for nearly a week.

Crews had planned to spend Wednesday and Thursday reinforcing with cement the last few feet of the relief tunnel that will be used to pump mud into the gusher and seal it. But BP put the task on hold and instead placed a temporary plug called a storm packer deep inside the tunnel, in the event it had to be abandoned until the storm passes.

“What we didn’t want to do is be in the middle of an operation and potentially put the relief well at some risk,” BP Vice President Kent Wells said.

The relief tunnel extends about 2 miles under the seabed. It’s now about 4 feet from the side of the well, although BP still has more than 100 feet to drill diagonally before the tunnel reaches the well. BP plans to insert a final string of casing, or drilling pipe, cement it into place, and give it a week to set, before attempting to punch through to the blown-out well and seal it.

The two rigs drilling relief tunnels will disconnect from the well if they have to evacuate the site. All appeared quiet on the rigs Thursday afternoon.

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