Abstract: With rapid development of information，science and technology，patent analysis is becoming more and more important in the era of knowledge economy.In process of patent analysis，patent analysis is based on thought that combining patent date analysis with technical analysis，and combining patent analysis software with artificial analysis.In analysis of horizontal well drilling rig，IPC analysis was used to analyze patent data through patent analysis software.Thus IPC needs to be analyzed was determined.Then technical analysis was carried out on patent data of IPC.Technical efficacy maps were constructed through technical analysis and direction for research and development of horizontal well drilling rig was get.