Sou Hu Cai Jing·2026-01-30 03:20Group 1 - The State Intellectual Property Office of China has granted a patent to China National Petroleum Corporation (CNPC) for a method, device, equipment, and medium related to "water drive front edge characterization," with the announcement number CN116927732B and an application date of April 2022 [1] - CNPC, established in 1990 and headquartered in Beijing, primarily engages in oil and natural gas extraction, with a registered capital of 48.69 billion RMB [1] - CNPC has made investments in 109 companies, participated in 5,000 bidding projects, holds 1,439 trademark records, and has 5,000 patent records, along with 28 administrative licenses [1] Group 2 - China National Petroleum Group Logging Company, founded in 2002 and located in Xi'an, focuses on extraction-related professional and auxiliary activities, with a registered capital of 223.498 million RMB [1] - The logging company has invested in 3 enterprises, participated in 5,000 bidding projects, holds 19 trademark records, and has 1,726 patent records, along with 558 administrative licenses [1]