Group 1 - The core point of the article is that China National Petroleum Corporation has obtained a patent for a method, device, equipment, and medium for calculating layer velocity data [1] - The patent was granted with the announcement number CN114861515B and the application date was February 2021 [1] - China National Petroleum Corporation was established in 1999 and is primarily engaged in oil and gas extraction [1] Group 2 - The registered capital of China National Petroleum Corporation is 18,302,097,000 RMB [1] - The company has made investments in 1,285 enterprises and participated in 445 bidding projects [1] - The company holds 38 trademark registrations and has 5,000 patent records, along with 168 administrative licenses [1]