Group 1 - The core viewpoint of the article highlights that China National Petroleum Corporation (CNPC) has applied for a patent for a method and device for identifying geothermal water layers, which aims to improve the accuracy and efficiency of geothermal water layer identification [1] Group 2 - The patent application, published as CN121454646A, was filed on October 2025 and includes a method that utilizes characteristic data from target drilling, such as logging data, core data, and water chemistry data, to achieve accurate identification of geothermal water layers [1] - The company, established in 1999 and based in Beijing, primarily engages in oil and natural gas extraction, with a registered capital of 18,302,097,000 RMB [1] - CNPC has made investments in 1,298 companies and participated in 443 bidding projects, holding 38 trademark records and 5,000 patent records, along with 168 administrative licenses [1]