GENEVA, June 30 -- 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/CN2024/126990) for "DOWNHOLE LIFTING ENERGY STORAGE TUBING STRING, DOWNHOLE MONITORING SYSTEM AND DOWNHOLE LIFTING ENERGY STORAGE METHOD" on Oct 24, 2024. With publication no. WO/2025/130330, the details related to the patent application was published on Jun 26, 2025.
Notably, the patent application was submitted under the International Patent Classification (IPC) system, whic...