关键词: 油气领域　技术创新　专利信息　专利申请　研发活动

Abstract: Patent information is an integration of technology, law and economy, recording dynamic technological development and patent activities. It is an important lever to propel technological and economic development. Analysis of the patent trend of the world oil and gas sector is of important strategic significance to promote technological development of oil enterprises and improve their competitiveness. Based on the application data of patents in the global oil and gas sector in recent years, this paper analyzes the annual changes in the past, the patents approved in various countries as well as the patents of international oil companies and engineering and technological service companies. The analysis indicates that the quantity of applications for patents in the global oil and gas sector was obviously on the rise in the recent decade with the applications concentrated in the areas of oil refining, oil and gas production, and drilling business. CNPC and Sinopec rank themselves on the forefront of the world for their application numbers of patents for the first time. International oil companies and engineering and technological service companies have attached great importance to global distribution of patents.

Key words: oil and gas sector, technological creation, patent information, application for patent, research and development activities