Sou Hu Cai Jing·2026-01-05 01:33Group 1 - The core viewpoint of the news is the application for a patent by China National Petroleum Corporation (CNPC) and China Petroleum Group Engineering Technology Research Institute for a method, system, equipment, and medium for constructing a drilling fluid rheological model, aimed at improving the accuracy of drilling fluid rheological characteristics simulation [1] Group 2 - CNPC was established in 1990 and is primarily engaged in oil and gas extraction, with a registered capital of 48.69 billion RMB. The company has invested in 107 enterprises and participated in 5,000 bidding projects, holding 1,447 trademark records and 5,000 patent records [2] - China Petroleum Group Engineering Technology Research Institute was founded in 2006, focusing on research and experimental development, with a registered capital of approximately 570.39 million RMB. The institute has invested in 4 enterprises and participated in 571 bidding projects, holding 31 trademark records and 2,200 patent records [2]