Sou Hu Cai Jing·2026-01-23 21:40Group 1 - China National Petroleum Corporation (CNPC) has recently obtained a new invention patent titled "Composite System of Wax-Preventing Strains and Preparation Method for Crude Oil Production," with the application number CN202311416422.2 and an authorization date of January 23, 2026 [1] - The patent describes a composite system for preventing wax in crude oil production, consisting of curved rod bacteria and spore bacteria along with a nutrient formula. The preparation method involves mixing components, sterilizing, cooling, inoculating, and incubating to obtain the final product [1] - The application of this wax-preventing strain composite system in oil wells can effectively prevent the deposition of petroleum wax on the pumping rods and wellbore, ensuring prolonged effectiveness without affecting production time [1] Group 2 - In 2023, CNPC has received a total of 152 patent authorizations, representing a 210.2% increase compared to the same period last year [1] - For the first half of 2025, CNPC reported a research and development investment of 9.899 billion yuan, which is a year-on-year increase of 2.51% [1] - CNPC has made investments in 1,297 companies and participated in 443 bidding projects, along with holding 105 trademark information and 48,144 patent information [2]