Sou Hu Cai Jing·2025-07-01 20:51Group 1 - The State Intellectual Property Office of China has published a patent application by China National Petroleum Corporation (CNPC) and China Petroleum Group Eastern Geophysical Exploration Co., Ltd. for a method and related device to improve the quality of low signal-to-noise ratio data reconstruction, with publication number CN120233408A and application date of December 2023 [1] - The patent describes a method that includes constructing a regular observation system based on an irregular observation system, determining first and second reconstruction paths, obtaining initial reconstruction data, and iteratively refining this data until a preset termination condition is met [1] Group 2 - China National Petroleum Corporation, established in 1990, is primarily engaged in oil and gas extraction, with a registered capital of 48.69 billion RMB and has invested in 113 companies, participated in 5,000 bidding projects, and holds 1,446 trademark records and 5,000 patent records [2] - China Petroleum Group Eastern Geophysical Exploration Co., Ltd., founded in 2000, focuses on professional technical services, with a registered capital of approximately 1.53 billion RMB, having invested in 31 companies, participated in 1,996 bidding projects, and holds 100 trademark records and 3,215 patent records [2]