Group 1 - China Petroleum (601857) has recently obtained a new invention patent titled "A Method and Device for Online Mobility Evaluation of Shale Oil Using Two-Dimensional Nuclear Magnetic Resonance," with the application number CN202511902158.2 and an authorization date of February 17, 2026 [1] - The patent involves a method for evaluating the mobility of shale oil, enhancing the accuracy of the evaluation process through a combination of low-frequency phase redundancy and echo invalidity [1] - In 2023, China Petroleum has received 342 new patent authorizations, representing an increase of 80.95% compared to the same period last year [1] Group 2 - In the first half of 2025, China Petroleum invested 9.899 billion yuan in research and development, which is a year-on-year increase of 2.51% [1] - The company has made investments in 1,300 enterprises and participated in 443 bidding projects [2] - China Petroleum holds 105 trademark records and 48,574 patent records, along with 168 administrative licenses [2]

Group 1 - Daqing Oilfield Co., Ltd. and China National Petroleum Corporation have obtained a patent for a method and device for evaluating the mobility of shale oil using two-dimensional nuclear magnetic resonance [1] - Daqing Oilfield Co., Ltd. was established in 2000, located in Daqing City, with a registered capital of 4,750 million RMB [1] - Daqing Oilfield Co., Ltd. has made investments in 34 companies and participated in 5,000 bidding projects, holding 11 trademark registrations and 7,409 administrative licenses [1] Group 2 - China National Petroleum Corporation was established in 1999, located in Beijing, with a registered capital of 18,302.097 million RMB [1] - China National Petroleum Corporation has invested in 1,300 companies, participated in 443 bidding projects, holds 38 trademark registrations, 5,000 patent registrations, and 168 administrative licenses [1]