Sou Hu Cai Jing·2026-02-17 05:55Group 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]