Sou Hu Cai Jing·2026-01-23 21:52Group 1 - China National Petroleum Corporation (CNPC) has recently obtained a new invention patent titled "Method, System, Equipment, and Medium for Identifying Water Invasion Volume During the Extraction Process of Water-Gas Reservoir Wells" with application number CN202311451382.5, authorized on January 23, 2026 [1] - The patent provides a method for identifying water invasion volume during the extraction process, which includes establishing an equivalent water invasion model based on the relative position of water and gas zones, and iterating a material balance model to evaluate water body and guide gas well drainage [1] - The company has received a total of 152 patent authorizations this year, representing a 210.2% increase compared to the same period last year [2] Group 2 - In the first half of 2025, CNPC invested 9.899 billion yuan in research and development, reflecting a year-on-year increase of 2.51% [2] - CNPC has made external investments in 1,297 enterprises and participated in 443 bidding projects [2] - The company holds 105 trademark records and 48,144 patent records, along with 168 administrative licenses [2]