Academy of Chinese Energy Strategy, China University of Petroleum(Beijing), Changping, Beijing 102249, China;
Policy Research Office, China National Petroleum Corporation, Beijing 100007, China;
Academy of Chinese Energy Strategy, China University of Petroleum(Beijing), Changping, Beijing 102249, China;
Policy Research Office, China National Petroleum Corporation, Beijing 100007, China;
Academy of Chinese Energy Strategy, China University of Petroleum(Beijing), Changping, Beijing 102249, China;