Group 1 - The State Intellectual Property Office of China has granted a patent to China National Petroleum Corporation (CNPC) for a device called "an array acoustic logging instrument with sound insulation short section," with authorization announcement number CN116357306B, applied for on December 2021 [1] - CNPC, established in 1990 and headquartered in Beijing, primarily engages in oil and gas extraction, with a registered capital of 48.69 billion RMB [1] - CNPC has invested in 109 companies, participated in 5,000 bidding projects, holds 1,439 trademark registrations, and has 5,000 patents, along with 28 administrative licenses [1] Group 2 - China Petroleum Logging Co., Ltd., established in 2002 and located in Xi'an, focuses on extraction and auxiliary activities, with a registered capital of 223.498 million RMB [1] - China Petroleum Logging Co. has invested in 3 companies, participated in 5,000 bidding projects, holds 19 trademark registrations, and has 1,723 patents, along with 558 administrative licenses [1]