* U.S. concerned over seep detected near BP well
* BP aims to keep new cap closed as long as possible
* British PM Cameron visits Washington this week
(Adds details, background, WSJ report)
By Chris Baltimore
HOUSTON, July 18 Engineers monitoring BP Plc's
damaged well in the Gulf of Mexico detected seepage on the
ocean floor that could mean problems with the cap that has
stopped oil from gushing into the water, the U.S. government's
top oil spill official said on Sunday.
Earlier on Sunday, BP officials had expressed hope that the
test of the cap which began Thursday could continue until a
relief well can permanently seal the leak next month. Oil
gushed from the deepsea Macondo well for nearly three months
until the new cap was put in place last week.
But late on Sunday, the U.S. government released a letter
to BP Chief Managing Director Bob Dudley from retired Coast
Guard Admiral Thad Allen that referred to an unspecified type
of seepage near the mile-deep (1.6 km-deep) well along with
"undetermined anomalies at the well head."
"I direct you to provide me a written procedure for opening
the choke valve as quickly as possible without damaging the
well should hydrocarbon seepage near the well head be
confirmed," Allen wrote.
BP did not respond to requests for comment on Allen's
The worst oil spill in U.S. history has caused an economic
and environmental disaster in five states along the Gulf Coast,
hurt President Barack Obama's approval ratings and complicated
traditionally close ties with Britain.
Those concerns are sure to be discussed when British Prime
Minister David Cameron meets Obama in Washington on Tuesday.
The plan had been for BP to resume siphoning the oil after
the completion of the pressure tests on the well, which extends
2.5 miles (4 km) under the seabed, to judge if it is able to
withstand the process to seal the leak.
But Doug Suttles, BP's chief operating officer, said the
company now hopes to keep the damaged well shut until the
relief well is completed in August and the leak is sealed off
with heavy drilling mud and cement.
"We're hopeful that if the encouraging signs continue that
we'll be able to continue the integrity test all the way to the
point that we get the well killed," he told reporters before
Allen issued his statement. "Clearly we don't want to reanimate
flow into the Gulf if we don't have to."
Suttles' statement could indicate diverging viewpoints
between BP and the U.S. government on plans for the well
integrity test. It prompted Allen -- who will ultimately make
the final call on the test -- to issue a statement that
"nothing had changed" in the joint plan going forward.
When BP choked off the flow a mile (1.6 km) under the
water's surface with a new, tighter cap on Thursday, it was the
first time oil has not spewed since an April 20 explosion on an
offshore rig killed 11 workers and triggered the disaster.
U.S. authorities probing the spill are looking into why
workers missed signs of an impending explosion and have drawn
up a list of more than 20 anomalies in the crew's response to
them, the Wall Street Journal reported.
Billy Nungesser, president of Plaquemines Parish in
Louisiana, said the new cap was good news after a three-month
losing battle to try to clean up oil hitting fragile marshlands
as more lapped ashore.
"We're very optimistic," Nungesser told the "Fox News
Sunday" program. "We see light at the end of the tunnel. It's a
very long tunnel but today we're making progress."
In Boothville, Louisiana, where a sign on a roadside snack
stand said "Thank you, Jesus, the well is capped," residents
were happy but frustrated at the economic toll the spill is
Obama -- under fire to push BP to plug the leak and clean
up a spill that has fouled beaches and ravaged fishing, tourism
and drilling industries -- welcomed the success of the new cap
but said there was much work ahead on a permanent solution.
Beyond monitoring the meeting between Cameron and Obama, BP
and its lobbyists are keeping a close eye on the U.S.
congressional debate over an energy bill that could include
reforms meant to prevent a repeat of Gulf of Mexico spill.
Lawmakers are considering a range of new rules that could
require tougher safety regulations on offshore drilling or bar
companies like BP from new offshore exploration leases.
The crisis took on a new twist over the weekend as the
British government said there was no evidence of a connection
between BP and last year's release of a Libyan man convicted of
the 1988 airline bombing over Lockerbie, Scotland, that killed
270 people, most of them Americans.
The U.S. Senate Foreign Relations Committee has scheduled a
July 29 hearing on possible ties between BP and the release of
Abdel Basset al-Megrahi, a Libyan intelligence officer who was
the only person convicted of the bombing of Pan Am Flight 103.
BP has said it lobbied the British government about slow
progress in resolving a different prisoner transfer agreement
with Libya in 2007 but was not involved in Megrahi's release.
(Additional reporting by Paul Eckert in Washington, Eileen
O'Grady in Houston, Alexandria Sage in Louisiana; Writing by
Deborah Charles; Editing by John O'Callaghan and Jackie Frank)