The efficient development of deep oil & gas has become a major demand for strategic resource replacement in China and constitutes an important part of the deep exploration of the earth, and the drilling and production technologies are the key to realizing the vision. In this paper, the development status of deep oil & gas drilling and production technologies in China was systematically summarized, and the gap between China and other countries in terms of the advanced level was analyzed, with the technological development trends in other countries discussed. According to the major technical problems and needs of deep oil & gas in China, the focus of research and breakthroughs in the three major directions of basic frontier technology, major key technology, and intelligent technology of deep oil & gas drilling and production were put forward from three aspects of technology promotion, technology innovation, and technology transformation. The research on these key technologies to build deep oil & gas drilling and production technology systems in China is of great significance for supporting major breakthroughs in deep oil & gas exploration, enhancing profits, and ensuring national energy security.

Broadband satellite communication networks are hotspots in the current satellite communication industry and show the greatest growth in the commercial market of communication satellites. This paper compares the system construction and technology development in China with the international advanced levels in terms of satellite system deployment, satellite technology development and communication system. To boost the development of space-based information network, the paper discusses the development trend and paradigm change of broadband satellite communication networks and looks ahead to the research directions of their key technologies. Suggestions and measures are also put forward for the development of broadband satellite communication network technology in China.