中国石油申请一种页岩气井产能潜力评估方法专利，提高页岩气产能潜力评估的可靠性及准确性

Group 1 - The core viewpoint of the news is that China National Petroleum Corporation (CNPC) has applied for a patent related to a method for evaluating the production potential of shale gas wells, which aims to enhance the reliability and accuracy of such assessments [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, holding 38 trademark records and 5,000 patent records, along with 168 administrative licenses [2].