Tags petrolvietnam drilling PetroVietnam acquires Chevron assets Thursday, Jun 18, 2015 Vietnam Oil and Gas Group, better known as PetroVietnam, acquired two oil and gas exploration and exploitation companies and a pipeline company owned by Chevron, one of the biggest multinational energy corporations in the United Sates. Falling oil prices hit VN-Index Saturday, Nov 29, 2014 Stocks fell away yesterday on both exchanges despite improved trading, dragged down by oil and gas shares.