Sou Hu Cai Jing·2026-01-07 12:14Group 1 - The State Intellectual Property Office of China shows that China National Petroleum Corporation, Beijing Petroleum Machinery Co., Ltd., and China Petroleum Group Kunlun Manufacturing Co., Ltd. have applied for a patent titled "A Precision Unclogging Device and Unclogging Method," with publication number CN121273248A, and application date of July 2024 [1] - The patent pertains to drilling technology in the oil and gas sector, proposing a precision unclogging device that includes a housing, power module, anchoring module, vibration module, and a sound wave transceiver module [1] - The sound wave transceiver module is designed to emit and receive sound signals to identify the location of clogging points in the drill string, controlling the activation and deactivation of the anchoring and vibration modules [1] Group 2 - China National Petroleum Corporation, established in 1990, is primarily engaged in oil and gas extraction, with a registered capital of 48.69 billion RMB [2] - The company has made investments in 107 enterprises, participated in 5,000 bidding projects, and holds 1,447 trademark records and 5,000 patent records [2] - Beijing Petroleum Machinery Co., Ltd., founded in 1955, focuses on automotive manufacturing, with a registered capital of approximately 4.48 billion RMB [2] - The company has invested in 3 enterprises, participated in 809 bidding projects, and holds 20 trademark records and 991 patent records [2] - China Petroleum Group Kunlun Manufacturing Co., Ltd., established in 2023, is involved in the oil, coal, and other fuel processing industries, with a registered capital of 580 million RMB [2] - The company has invested in 8 enterprises, participated in 24 bidding projects, and holds 50 patent records [2]