Group 1 - The core viewpoint of the news is that Sinopec has applied for a patent for a method to enhance EUR (Estimated Ultimate Recovery) in deep shale gas wells, indicating a focus on improving production efficiency in the oil and gas sector [1] - The patent application, titled "Method for Improving EUR and Its Application in Deep Shale Gas Wells," was filed on January 2024, showcasing Sinopec's commitment to innovation in extraction techniques [1] - The proposed method includes a series of steps such as designing a horizontal well drilling plan, conducting non-uniform limit flow perforation design, and implementing a staged fracturing process to enhance gas production [1] Group 2 - Sinopec, established in 2000, is primarily engaged in oil and gas extraction, with a registered capital of approximately 12.17 billion RMB and has invested in 263 companies [2] - Sinopec has participated in 5,000 bidding projects and holds 5000 patent records, indicating a strong presence in the industry [2] - The Sinopec Petroleum Engineering Technology Research Institute, founded in 2022, focuses on research and development with a registered capital of 300 million RMB and has invested in 3 companies [2]