Sou Hu Cai Jing·2026-02-17 18:56Group 1 - The core point of the article is that China Petroleum (601857) has been granted a new invention patent for a method of evaluating carbonate reservoir types after acid fracturing, which enhances its technological capabilities in the oil and gas sector [1] - The patent, titled "A Method for Evaluating the Types of Carbonate Reservoirs After Acid Fracturing in Fractured Caves," was authorized on February 17, 2026, and aims to improve the assessment of reservoir types and the effectiveness of acid fracturing operations [1] - In 2023, China Petroleum has received a total of 342 patent authorizations, representing an increase of 80.95% compared to the same period last year [1] Group 2 - In the first half of 2025, China Petroleum invested 9.899 billion yuan in research and development, which is a year-on-year increase of 2.51% [1] - The company has made investments in 1,300 enterprises and participated in 443 bidding projects, indicating its active engagement in the market [2] - China Petroleum holds 105 trademark registrations and 48,574 patent records, along with 168 administrative licenses, showcasing its extensive intellectual property portfolio [2]