* Conoco reduces Ekofisk oil output
* Maersk cuts Danish oil and gas output
COPENHAGEN/OSLO, Dec 5 (Reuters) - North Sea oil and gasproducers have cut some production and moved staff from alimited number of platforms to shore because of a major storm,the companies said on Thursday.
ConocoPhillips reduced output at its huge Ekofiskfield in the North Sea while Maersk Oil, a unit of Danishshipping firm A.P. Moller-Maersk reduced oil outputand stopped gas exports from its Tyra field in the Danish partof the North Sea.
"With weather conditions expected to peak on Thursdayafternoon, we have relocated a number of personnel onshore andto the Ekofisk complex," a Conoco spokesman said. "Productionwill be partly impacted (at Ekofisk) until we can safely resumefull operations."
The firm did not provide any further details.
Ekofisk, one of the oldest and biggest fields in the NorthSea was expected to produce around 102,000 barrels of oil perday, the Norwegian Petroleum Directorate said earlier.
Statoil said it has moved 33 non-essentialpersonnel off its Troll B platform but production was notaffected. BP has also moved some non essential people off theValhall platform in Norway but production there was notimpacted.
Talisman Sinopec earlier said it has closed its BuchanAlpha platform in the UK sector of the North Sea ahead of anapproaching winter storm.
A storm in the North Sea was expected to generate waves ofup to 10 metres before subsiding late on Thursday or earlyFriday.