Group 1 - China National Petroleum Corporation (CNPC) applied for a patent titled "Three-dimensional Tomographic Inversion Continuous Parallel Computing Method and Device" with publication number CN120144234A, filed on December 2023 [1] - The patent aims to enhance oil exploration technology by providing a method for three-dimensional tomographic inversion using a parallel computing model that leverages multi-node and multi-core CPUs in a cluster environment [1] - This innovation is expected to improve exploration and production efficiency by utilizing high-performance computing capabilities, thus providing a foundational guarantee for large-scale production applications [1] Group 2 - CNPC, established in 1990 and based in Beijing, primarily engages in gas production and supply, with a registered capital of 48.69 billion RMB [2] - The company has made investments in 112 enterprises and participated in 5,000 bidding projects, holding 1,446 trademark records and 5,000 patent records [2] - China Petroleum Group Eastern Geophysical Exploration Co., Ltd., founded in 2000 and located in Baoding, focuses on professional technical services with a registered capital of approximately 1.53 billion RMB [2] - This subsidiary has invested in 31 enterprises, participated in 1,974 bidding projects, and holds 100 trademark records and 3,218 patent records [2]