Sou Hu Cai Jing·2026-01-22 10:32Group 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, and device related to pressure flow control in pressure-controlled drilling [1] - The patent application, published as CN121363419A, was filed on July 2024 and focuses on real-time control of throttle valve opening to adjust pressure flow during drilling operations [1] - The method involves real-time acquisition of drilling data and sensor data, determining upstream and downstream sampling points, and calculating the throttle valve opening based on these data points [1] Group 2 - China National Petroleum Corporation was established in 1990, located in Beijing, primarily engaged in oil and gas extraction, with a registered capital of 48.69 billion RMB [2] - CNPC has invested in 107 companies, participated in 5,000 bidding projects, and holds 1,441 trademark records and 5,000 patent records [2] - China Petroleum Group Engineering Technology Research Institute, founded in 2006, also based in Beijing, focuses on research and experimental development with a registered capital of approximately 570.39 million RMB [2] - The research institute has invested in 4 companies, participated in 579 bidding projects, and holds 33 trademark records and 2,228 patent records [2]