KazMunaiGas Kashagan gets $0.6 billion advance from Vitol

MOSCOW, Sept 22 (Reuters) - KazMunaiGas Kashagan (KMGK), a subsidiary of Kazakhstan's state oil company KazMunaiGas, has extended a deal with international trader Vitol on pre-export financing of oil supplies from the Kashagan field with an additional prepayment of $600 million, the subsidiary's press-service reported