Group 1 - The State Intellectual Property Office of China has granted a patent for a "Directional Well Tubing Retrieval Process" to Daqing Oilfield Co., Ltd. and China National Petroleum Corporation, with the announcement number CN115874958B and application date in August 2021 [1] - Daqing Oilfield Co., Ltd., established in 2000 and located in Daqing City, focuses on oil and gas extraction, with a registered capital of 4,750 million RMB. The company has invested in 34 enterprises, participated in 5,000 bidding projects, holds 11 trademark registrations, 4,843 patents, and possesses 7,409 administrative licenses [1] - China National Petroleum Corporation, founded in 1999 and based in Beijing, also specializes in oil and gas extraction, with a registered capital of 18,302 million RMB. The company has invested in 1,300 enterprises, participated in 443 bidding projects, holds 38 trademark registrations, 5,000 patents, and has 168 administrative licenses [1]