Group 1 - The State Intellectual Property Office of China has granted a patent titled "A Method for Improving the Accuracy of Root Mean Square Velocity in Complex Geological Structures" to China National Petroleum Corporation and China Petroleum Group Geophysical Exploration Co., Ltd. The patent was applied for on December 2021 [1] - China National Petroleum Corporation, established in 1990 and headquartered in Beijing, primarily engages in oil and natural gas extraction. The company has a registered capital of 48,690 million RMB and has invested in 110 enterprises, participated in 5,000 bidding projects, and holds 1,436 trademark records and 5,000 patent records, along with 28 administrative licenses [1] - China Petroleum Group Geophysical Exploration Co., Ltd., founded in 2000 and located in Baoding, focuses on professional technical services. The company has a registered capital of approximately 1,532.48 million RMB, has invested in 32 enterprises, participated in 2,405 bidding projects, and possesses 100 trademark records and 3,429 patent records, in addition to 278 administrative licenses [1]