INTERNATIONAL PATENT: PETROCHINA COMPANY LIMITED, 中国石油天然气股份有限公司 FILES APPLICATION FOR "PERMEABILITY EVALUATION METHOD AND APPARATUS BASED ON OIL-BASED MUD ELECTRICAL IMAGING LOGGING"

GENEVA, Nov. 23 -- PETROCHINA COMPANY LIMITED (9 Dongzhimen North StreetDongcheng District, Beijing 100007), 中国石油天然气股份有限公司 (中国北京市东城区东直门北大街9号) filed a patent application (PCT/CN2024/140026) for "PERMEABILITY EVALUATION METHOD AND APPARATUS BASED ON OIL-BASED MUD ELECTRICAL IMAGING LOGGING" on Dec 17, 2024. With publication no. WO/2025/236660, the details related to the patent application was published on Nov 20, 2025.

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