* Anadarko declares force majeure due to drilling halt
* Rigs owned by Transocean, Diamond, Noble Corp-analyst
* Still using one rig for non-drilling activities
(Adds names of rig owners, analyst's comment, background)
NEW YORK/SAN FRANCISCO, June 3 Anadarko
Petroleum Corp (APC.N), part owner of the crippled well that
has been gushing oil into the Gulf of Mexico since April, said
on Thursday it had declared force majeure on three rigs in the
Anadarko did not say which rigs were affected, but UBS
analyst Angie Sedita said they were owned by Transocean Ltd
(RIGN.S)(RIG.N), Diamond Offshore Drilling Inc (DO.N) and Noble
BP (BP.L) (BP.N) owns 65 percent of the Gulf of Mexico oil
well that ruptured on April 20 and Anadarko owns 25 percent.
Transocean is owner of the rig.
"We believe operators have invoked the force majeure clause
on a total of four rigs so far, with more expected to come,"
Sedita wrote in a note to investors on Thursday.
Force majeure relieves a company from liability when it
cannot fulfill contractual obligations because of natural and
Anadarko said it still had one rig under contract in the
Gulf, which it planned to use to continue completion, workover
and other non-drilling activities on existing wells during the
drilling moratorium issued by the federal government.
The rig kept at work is owned by Ensco Plc (ESV.N), Sedita
On June 1, Cobalt International Energy Inc (CIE.N) declared
force majeure on another Diamond-owned rig in the Gulf of
Anadarko said it would stick to its full-year and
second-quarter sales forecasts and said its spending plans for
the year were unchanged.
Anadarko's shares have fallen to $46.06, where they closed
on Thursday, from a year high of $75.07 on April 15.
(Reporting by Matt Daily in New York and Braden Reddall in San
Francisco; Editing by Derek Caney, Toni Reinhold)