CNPC Exploration and Development Company Ltd is a subsidiary of PetroChina Company Ltd and the joint venture PetroChina and CNODC, where each of both holds 50% share. PetroChina and CNODC are the 100% subsidiaries of CNPC.

JSC Exploration & Production KazMunaiGas is engaged into production of crude oil at the oil fields in west and south regions of Kazakhstan. EP KMG is a subsidiary of JSC National Company KazMunaiGaz.