Group 1 - The core point of the news is that China National Petroleum Corporation (CNPC) has applied for a patent for an integrated evaluation device and method for the displacement and imbibition effects in tight oil reservoirs, indicating a focus on enhancing oil recovery techniques [1] Group 2 - CNPC was established in 1999 and is primarily engaged in the oil and natural gas extraction industry, with a registered capital of 18,302,097,000 RMB [2] - The company has made investments in 1,296 enterprises and participated in 443 bidding projects, showcasing its extensive involvement in the industry [2] - CNPC holds 38 trademark registrations and 5,000 patent records, along with 168 administrative licenses, reflecting its significant intellectual property portfolio [2]