BASRA, Iraq, May 18 (Reuters) - Exxon Mobil has evacuated all its foreign staff members out of Iraq's West Qurna 1 oilfield and is flying them out to Dubai, three sources told Reuters on Saturday.

Production at the oilfield was not affected by the evacuation and work there is under way normally and being undertaken by Iraqi engineers, Iraqi oil officials said.

Staff were evacuated over several phases late on Friday and early on Saturday, either straight to Dubai or to the main camp housing foreign oil company employees in Basra province.

Those in the camp are en route to the airport now, the three sources - an employee at a security company contracted by Exxon, an Iraqi oil official, and a staff member of a foreign oil company - said. (Reporting by Aref Mohammed; Writing by Ahmed Aboulenein; Editing by Alison Williams)