China National Petroleum Corporation has obtained patents related to shale evolution simulation, performing quantitative modeling of shale evolution to provide precise support for oil and gas development.

April 2 News, the State Intellectual Property Office’s information shows that China National Petroleum Corporation has applied for a patent titled “Simulation Method and Device for Quantitative Characterization of Shale Component and Physical Property Co-evolution Process,” with authorization announcement number CN120491212B, granted on March 31, 2026. The application publication number is CN120491212A, application number CN202510390250.9, published on March 31, 2026, filed on March 31, 2025. Inventors are Gong Deyu, Yang Wei, Yang Chun, Wang Ruiju. The patent agency is Beijing Sanyou Intellectual Property Agency Co., Ltd., patent attorney Wang Shoufeng. Classification codes are G01V20/00, G01D21/02.

The patent abstract states that the invention provides a simulation method and device for co-evolution process of shale component and physical properties, involving the technical field of unconventional oil and gas reservoir evaluation. The method includes: determining shale component and physical property parameters, and based on these parameters, calculating a comprehensive index of shale reservoir performance; using preset empirical constants, initial experimental conditions, and current experimental conditions to determine shale evolution coefficient based on the corresponding comprehensive index, temperature, and pressure; and based on preset empirical coefficients, the temperature difference and pressure difference between current and initial conditions, as well as the physical parameters of shale samples, determining shale pore characteristic factors. The device executes the above method. The embodiments of the invention provide methods and devices that can offer more precise technical support for the development of shale oil and gas reservoirs.

China National Petroleum Corporation was established on November 5, 1999, and listed on the Shanghai Stock Exchange on November 5, 2007. Its registered address is in Beijing, with office addresses involving Beijing and Hong Kong. It is a leading enterprise in the domestic oil and gas industry, covering the entire industry chain including exploration, development, refining, and sales, with strong resource control and industrial synergy advantages.

Main businesses include exploration, development, production, transportation, and sales of crude oil and natural gas, as well as new energy businesses; refining of crude oil and petroleum products; production and sales of chemical products and new materials; sales of refining products and non-oil products; and natural gas transportation and sales. The industry classification is Petrochemical - Refining and Trading - Refining and Chemical Industry. Concept sectors include main polyethylene, Sinopec-related, and oil reform concepts.

In 2025, China National Petroleum’s operating revenue reached 2,864.469 billion yuan, ranking first among five industry companies, far exceeding the industry average of 1,146.327 billion yuan and the median of 75.56B yuan, surpassing the second-ranked Sinopec with 2,783.583 billion yuan. The main business composition includes refining products accounting for 68.87%, natural gas 42.66%, crude oil 42.26%, etc. Net profit in 2025 was 172.01B yuan, also ranking first in the industry, significantly ahead of the industry average of 41.17B yuan and median of 12.0568 million yuan, with Sinopec’s net profit at 35.25 billion yuan.

Recent patent situation of China National Petroleum Corporation is as follows:

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