INTERNATIONAL PATENT: CHINA NATIONAL PETROLEUM CORPORATION, 中国石油天然气集团有限公司 FILES APPLICATION FOR "POLYMER MICROSPHERE PROFILE CONTROL AND WATER SHUTOFF AGENT, PREPARATION METHOD THEREFOR AND USE THEREOF"

GENEVA, April 27 -- CHINA NATIONAL PETROLEUM CORPORATION (9 Dongzhimen North Street, Dongcheng DistrictBeijing 100007), 中国石油天然气集团有限公司 (中国北京市东城区东直门北大街9号) filed a patent application (PCT/CN2024/092535) for "POLYMER MICROSPHERE PROFILE CONTROL AND WATER SHUTOFF AGENT, PREPARATION METHOD THEREFOR AND USE THEREOF" on May 11, 2024. With publication no. WO/2025/081789, the details related to the patent application was published on Apr 24, 2025.

Notably, the patent application was submitted under the International Patent Classification (IPC) system, which...