Work is to resume on an oil field hit by religious violence earlier this month which left a British security official in hospital.
A G4S worker was left with broken bones after being attacked by a mob over an alleged religious insult at the Schlumberger camp near the Rumaila oil field.
The incident came just days after Baker Hughes had seen its plant overrun by protesters.
Both incidents related to the removal of flags of Imam Hussein, sparking calls from the Iraqi president Nuri al-Maliki for the security worker to be deported.
But two weeks after the incidents, the companies are now starting to resume operations in the country, after talks with Iraqi oil officials.
Schlumberger staff are believed to have started returning to work this week, while Baker Hughes, which had declared force majeure in Iraq, said it was now starting the process of resuming work.
“We have initiated the resumption of operations,” said Baker Hughes strategy vice president Derek Mathieson.
“Within the coming weeks, we will be working toward becoming fully operational,” he said.