Group 1 - The core point of the news is that China National Petroleum Corporation (CNPC) has applied for a patent for an integrated operation string setting method, system, equipment, and medium, aimed at optimizing the efficiency and safety of well preparation operations [1] Group 2 - The patent application was published under the number CN121273235A, with an application date of July 2024 [1] - The method involves constructing a downhole rock debris movement control equation based on wellbore condition data, iteratively calculating the downhole flow field, and establishing a rock debris migration model [1] - The integrated tool string configuration method aims to achieve optimal debris carrying capacity while ensuring safety during deployment, thereby shortening the well preparation cycle [1] Group 3 - CNPC was established in 1999 and is primarily engaged in oil and gas extraction, 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, holding 38 trademark records and 5,000 patent records [2] - CNPC also possesses 168 administrative licenses, indicating a significant operational footprint in the industry [2]