According to the news from Securities Star, according to the data of Tianyancha APP, PetroChina (601857) has obtained a new invention patent authorization, the patent name is "Method and exploitation method for fracturing the section of ultra-short radius side-drilling horizontal well", the patent application number is CN202111264603.9, and the authorization date is April 25, 2025.

Patent Abstract: The present invention discloses a method and exploitation method for fracturing the section of ultra-short radius side-drilling horizontal well, the fracturing method may include: based on the current remaining reservoir distribution and the current reservoir pressure state of the target area, numerical simulation of the reservoir is performed to determine the fractures and fracture parameters required to exploit the remaining reservoir; based on the current state of the in-situ stress field of the target area, the fracture extension morphology under the current in-situ stress field state is determined; hydraulic injection is performed at the position of the required fracture to form a mechanical weak surface, thereby guiding the hydraulic fracture to start at the injection position. The initiation and expansion of the required fracture are guided, and the hydraulic injection is performed on the rock surface of the ultra-short radius side-drilling horizontal well section to form a mechanical weak surface, thereby guiding the hydraulic fracture to start at the injection position. During the construction process, temporary plugging agents are used to increase the net pressure of the cracks, promote the uniform expansion of multiple cracks and increase the complexity of the cracks, so as to achieve the expected fracturing effect.

PetroChina has obtained 414 new patent authorizations this year, a decrease of 25.67% from the same period last year. Combined with the company's 2024 annual report financial data, the company invested 23.014 billion yuan in research and development in 2024, a year-on-year increase of 4.77%.