Sou Hu Cai Jing·2026-01-30 03:20Group 1 - China Petroleum & Chemical Corporation (Sinopec) has applied for a patent titled "Directional Cooling Working Blade Drill Bit," with publication number CN121407849A, filed on October 2025. The invention includes a drill body and multiple cutting teeth, featuring at least one injection tooth with a hard alloy matrix and a composite layer on its top surface. The design aims for precise cooling, structural toughness, and high compatibility [1] - Sinopec was established in 2000 and is based in Beijing, primarily engaged in oil and gas extraction. The company has a registered capital of approximately 12.17 billion RMB and has invested in 269 enterprises, participated in 5,000 bidding projects, and holds 5,000 patent records [1] Group 2 - Sinopec Petroleum Machinery Co., Ltd. was founded in 1998 and is located in Wuhan, focusing on specialized equipment manufacturing. The company has a registered capital of approximately 955.67 million RMB, has invested in 15 enterprises, participated in 1,807 bidding projects, and holds 1,819 patent records [2]