North Glass Research Institute Tengzhou Composites and COOEC Obtain Patents for Subsea Manifold Protective Caps, Achieving Manifold System Protection and Convenient Opening/Closing for Subsea ROVs

March 21 News, according to the State Intellectual Property Office information, Beibo Institute (Tengzhou) Composite Materials Co., Ltd. and China National Offshore Oil Corporation Engineering Co., Ltd. applied for a patent titled “Protective Cover and Protective Structure for Connecting Underwater Manifold Support Frame,” with the authorization announcement number CN117027711B, granted on March 17, 2026. The application publication number is CN117027711A, application number CN202311046755.0, published on March 17, 2026. The application was filed on August 19, 2023. Inventors include Meng Zhan-guang, Zhong Ji-bin, Liu Xiao-bin, Zhao Xiao-lei, Lü Ying-chuang, Zhang Chi, Wei Peng-fei, Yin Zhi-sheng, Zhao Xing-han. The patent agency is Beijing Power Patent Agency (Special Partnership), patent agent Mao Yu-tian. Classification codes are E21B33/037, E06B5/00, E05B15/00, E05B63/00, E05B65/00, E21B41/00.

Patent Abstract: The invention relates to a protective cover and protective structure for connecting with an underwater manifold support frame, comprising a cover body made of composite material, including a cover plate with downward extending side plates along its circumference; a lifting plate below one side of the cover plate, with side through long holes for the lifting plate to pass through; a first upper long hole and a through first upper circular hole on the cover plate, with a first locking slider sliding inside the first upper long hole; the first locking slider connected to the lifting plate via a detachable connector; a limit plate below the lifting plate, with a limit long hole, and a limit moving rod for limiting connection; the limit plate is detachably connected to the cover plate via a fixed connector; a pin extends from one end in the side through long hole direction and is detachably connected to the lifting plate. This design effectively protects the manifold system and allows easy flipping and opening of the ROV at 1000m underwater.

Tianyancha data shows that Beibo Institute (Tengzhou) Composite Materials Co., Ltd. was established on January 26, 2011. The legal representative is Zhang Weijun. The industry is non-metallic mineral products. The company is medium-sized with registered capital of 145 million RMB, paid-in capital is not specified. The registered address is No. 1599, Xinhua Road, Jiangtun Town, Zaozhuang City, Shandong Province. The company has invested in 0 external enterprises, participated in 307 bidding projects, has 0 trademark information, 169 patent items, and 47 administrative licenses.

Recent patent filings by Beibo Institute (Tengzhou) Composite Materials Co., Ltd.:

Oilfield Engineering was established on April 20, 2000, listed on the Shanghai Stock Exchange on February 5, 2002, with registered and office addresses in Tianjin. It is a leading enterprise in China’s offshore oil and gas engineering field, providing full industry chain services and one-stop solutions for offshore oil and gas development.

Main business includes providing design, onshore manufacturing, offshore installation, commissioning, and maintenance services for offshore oil and gas resource development. It belongs to the Shenwan industry category of Petroleum & Petrochemical - Oilfield Engineering - Oil & Gas and Refining. It involves concepts like combustible ice, oil reform, and natural gas.

In 2025, the company’s revenue reached 27.163 billion RMB, ranking first in the industry, far surpassing the second-ranked BomiTech with 1.9 billion RMB. The industry average and median are both 1.4532 billion RMB. Net profit in 2025 was 2.112 billion RMB, also ranked first, with the second-ranked BomiTech at 61.1479 million RMB, and the industry average and median both at 1.087 billion RMB.

Recent patent filings by China National Offshore Oil Corporation Engineering Co., Ltd.: