The companies will use the shutdown to upgrade technological equipment and implement several environmental projects, Rompetrol said in a statement Friday. Overall costs are exoected to exceed $55 million.
It said the shutdown will not affect deliveries to customers.
Registered in the Netherlands, Rompetrol is wholly-owned by Kazakhstan’s state-run oil company KazMunayGas.
The company reported a loss of $156.8 million in 2012, narrower from $173.7 million a year earlier.