China National Petroleum Corporation has obtained patents related to shale pore evaluation, providing methods and devices to accurately quantify and assess the effectiveness of shale pores.

April 2 News, the State Intellectual Property Office information shows that China National Petroleum Corporation has applied for a patent titled “A Method and Device for Shale Pore Effectiveness Evaluation and Processing,” with authorization announcement number CN120331753B, granted on March 31, 2026. The application publication number is CN120331753A, application number CN202510396897.2, with publication date March 31, 2026, and application date March 31, 2025. Inventors are Gong Deyu, Yang Wei, Wang Ruiju, Yang Chun. The patent agency is Beijing Sanyou Intellectual Property Agency Co., Ltd., patent attorney Wang Shoufeng. Classification codes include E21B47/00, G01N15/08, G01N1/28, E21B41/00.

The patent abstract states that the invention provides a method and device for evaluating shale pore effectiveness, involving the technical field of oil and gas field development. The method includes: obtaining a pore structure complexity index, a cumulative ink bottle pore volume ratio, an improved pore structure complexity index, and an improved cumulative ink bottle pore volume ratio; calculating a pore effectiveness index based on the pore structure complexity index and the cumulative ink bottle pore volume ratio, and calculating an improved pore effectiveness index based on the improved indices; evaluating the pore effectiveness of shale samples based on these indices to obtain the evaluation results. The device executes the above method. The embodiment of the invention provides a method and device for evaluating shale pore effectiveness, capable of accurately and quantitatively assessing shale pore effectiveness.

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 locations in Beijing and Hong Kong. It is a leading company in the domestic oil and gas industry, with core businesses covering exploration, development, refining, and sales, possessing full industry chain advantages, and is highly investment-worthy.

China National Petroleum’s main businesses include exploration, development, production, transportation, and sales of crude oil and natural gas, as well as new energy businesses. It belongs to the Shenwan industry category of Petrochemical - Refining and Trading - Refining and Chemical, with concept sectors including polyethylene, Sinopec-related, and oil reform concepts.

In 2025, China National Petroleum’s revenue reached 2,864.469 billion yuan, ranking 1st out of 5 in the industry, far exceeding the industry average of 1,146.327 billion yuan and the median of 75.56B yuan, surpassing the second-ranked Sinopec’s 2,783.583 billion yuan. Among its main businesses, refining products accounted for 1.97T yuan, or 68.87%. Net profit was 172.01B yuan, also ranking 1st out of 5, higher than the industry average of 41.17B yuan and median of 12.06M yuan, far exceeding Sinopec’s 35.25 billion yuan.

Recent patent applications by China National Petroleum Corporation are as follows:

[The list continues with additional patents, omitted here for brevity.]

Statement: Market risks exist; investment should be cautious. This article is automatically published by an AI model based on third-party databases and does not represent Sina Finance’s views. All information herein is for reference only and does not constitute personal investment advice. Please refer to actual announcements for accuracy. For questions, contact biz@staff.sina.com.cn.