* Transocean says Marianas rig stable, no injuries
* Rig working 46 miles off Ghana for Eni for $450,000/day
* Marianas drilled first well at Macondo in Gulf of Mexico
* Rig maintenance flagged internally in early 2010--report
(Adds more on Eni in Ghana, background on rig)
By Braden Reddall and Jennifer Ablan
SAN FRANCISCO/NEW YORK, July 6 Transocean Ltd
RIGN.VX(RIG.N) evacuated 108 nonessential personnel from a
deepwater rig working off Ghana for Eni SpA (ENI.MI) after it
took on water on Wednesday.
Fears for the rig's safety, with memories of the Deepwater
Horizon disaster still fresh, sent Transocean shares down more
than 3 percent and weighed down the stocks of competitors.
The company said the situation was under control on the
Transocean Marianas, which is working 46 miles (74 km) off
Ghana's bustling port of Takoradi.
"The rig is stable at this time. There are no injuries,"
spokesman Guy Cantwell said.
After the evacuations by helicopter, 13 staff remained on
the rig, he said. The company was conducting an investigation
and looking into ways to fix the problem.
Cantwell declined to comment on the amount of water on
board the Marianas. A U.S.-based official at Eni declined to
comment and a spokesman in Milan was not immediately available
Eni announced a successful appraisal and testing of the
Sankofa discovery off Ghana in April. [ID:nLDE73B0PF]
The Marianas, a semisubmersible that entered service in
1979 and was updated in 1998, is on a contract with Eni at a
rate of $450,000 per day. It is capable of drilling in 7,000
feet of water (2,100 meters) to depths of 25,000 feet.
The shares of Transocean, the world's largest offshore
drilling contractor, fell as much as 5 percent when the news
emerged and closed 3.2 percent lower at $62.23. The shares of
rival Noble Corp (NE.N) shed 3.4 percent, while Diamond
Offshore Drilling Inc (DO.N) ended 1.2 percent down.
The shares of Switzerland-based Transocean have risen more
than 50 percent off their lows last summer after BP Plc's
(BP.L) Macondo well blowout in the Gulf of Mexico destroyed
Transocean's Deepwater Horizon rig.
The Marianas, which moved out of the Gulf of Mexico last
year due to the U.S. deepwater drilling moratorium that
followed, happened to drill the first well at the Macondo
prospect in 2009, before the rig was damaged by Hurricane Ida.
The Marianas was also one of four rigs examined in a
confidential Transocean report on U.S. safety conducted prior
to the Macondo blow-out, as reported by the New York Times last
August, in which some workers expressed concern about both
maintenance and safety procedures.
(Reporting by Braden Reddall and Jennifer Ablan; editing by
Richard Chang, Tim Dobbyn, Matthew Lewis and Andre Grenon)