CNPC Exploration and Development Company Ltd. is a subsidiary of PetroChina Ltd. and China National Oil and Gas Exploration and Development Company Ltd., which own equal interest stakes in its authorized capital, and are 100% subsidiaries of China National Petroleum Corporation.

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.