Sou Hu Cai Jing·2026-02-06 06:21Group 1 - The core point of the article is that China National Offshore Oil Corporation (CNOOC) has obtained a patent for a method, device, equipment, and medium for determining geological strata, with the patent announcement number CN116338793B and an application date of April 2023 [1] - CNOOC was established in 1983 and is based in Beijing, primarily engaged in oil and gas extraction, with a registered capital of 11,380 million RMB [1] - CNOOC has invested in 45 companies, participated in 5,000 bidding projects, holds 279 trademark registrations, and has 5,000 patent records, along with 28 administrative licenses [1] Group 2 - CNOOC International Energy Services (Beijing) Co., Ltd. was founded in 2013 and is also focused on oil and gas extraction, with a registered capital of 130 million USD [1] - This subsidiary has participated in 260 bidding projects, holds 100 patent records, and has 1 administrative license [1]