CNOOC Engineering Applied for Tension Measurement Device Patent, Real-time Measurement of Tension Tendon Tension, Dual-system Cross-verification Easy to Maintain

2026-03-22 06:59:37

March 21 News, the State Intellectual Property Office’s information shows that China National Offshore Oil Corporation (CNOOC) has applied for a patent titled “Real-time Tension Measurement Device for Tension Legs Platform Tendons.” The application publication number is CN121702593A, the application number is CN202511571934.5, the publication date is March 20, 2026, and the application date is October 30, 2025. The inventors are Deng Shi, Fan Shuwei, Li Shuai, Yang Xiaolong, Zhang Shiyuan, Zhang Fafu, Liu Xuping, Zhang Guanglei, Chen Zhongge, Ma Bangyong, Kong Fanxu. The patent agency is Tianjin Sanyuan Patent and Trademark Agency Co., Ltd., with patent agent Hu Wanming. The classification codes are G01L1/24 and G01L5/00.

Patent Abstract: The invention discloses a real-time tension measurement device for tendons of a tension legs platform. The device includes a rocker arm, a first shackle, and a second shackle, with the first and second shackles connected at opposite ends of the rocker arm. The first shackle is connected to the platform, and the second shackle is connected to the tendon, positioning the rocker arm between the platform and the tendon. The rocker arm is equipped with a first fixed block and a second fixed block, connected via a tension adjustment arm, which in turn is connected to an optical fiber force sensor. When the rocker arm undergoes micro-deformation, the tension adjustment arm deforms synchronously, and the optical fiber force sensor outputs signals through a cable to measure the tension of the tendon. The invention provides a system with two measurement setups for verification, simple structure, easy operation, and convenient maintenance and replacement.

CNOOC Engineering was established on April 20, 2000, and listed on the Shanghai Stock Exchange on February 5, 2002. Its registered and office address is in Tianjin. It is a leading enterprise in China’s offshore oil and gas engineering field, providing full industry chain services for offshore oil and gas development, with strong technical capabilities and extensive project experience.

Main business includes providing design, onshore manufacturing, offshore installation, commissioning, and maintenance services for offshore oil and gas resources. It belongs to the Shenwan industry category of Petrochemical - Oilfield Services - Oil & Gas and Refining Engineering, involving concepts such as combustible ice, oil and gas reform, and natural gas.

In 2025, CNOOC Engineering achieved revenue of 27.163 billion yuan, ranking first among two companies in the industry, far surpassing the second-ranked BomiTech with 1.9 billion yuan. The industry average and median are both 14.532 billion yuan. Net profit in 2025 was 2.112 billion yuan, also ranking first in the industry, with the second-ranked BomiTech at 61.45 million yuan. The industry average and median are both 1.087 billion yuan.

Recent patent applications by China National Offshore Oil Corporation include:

No.	Patent Name	Type	Legal Status	Application Number	Application Date	Publication Number	Publication Date	Inventors
1	Underwater Cleaning Robot Double-View Closed-Loop Adaptive Cleaning Brush System	Invention Patent	Published	CN202610154744.1	2026-02-04	CN121650825A	2026-03-13	Xiong Mingyang, He Yakun, Zhao Gang, Li Wei, Huang Zhuangqin, Wang Dan, Wang Haoyu, Zhong Guoqiang, Wang Wei, Ye Jianlin, Zhang Yuanjie, Zhang Jian, Liu Jiying, Li Chengfeng, Yang Pengpeng, Peng Yanqing
2	Modular Connection Device for LNG Land Terminal Transport Beam and Support Column Node	Invention Patent	Effective after substantive examination, published	CN202511845901.5	2025-12-09	CN121407656A	2026-01-27	Yang Jian, Su Juan, Fu Yu, Shen Gang, Zhang Zhaojun, Li Lei, Zhu Guanghui, Li Wenjie, Sun Peng, Hou Xiaomeng
3	Design Method for 3D Seismic Isolation System of Ultra-Large LNG Storage Tank	Invention Patent	Published	CN202511818066.6	2025-12-04	CN121683227A	2026-03-17	Han Xiaokang, Zhao Menglong, Chen Hang, Zhang Liangfeng, Deng Bin, Xiao Cao, Wang Shun, Zhang Shan, Luo Zhongcheng, Li Yang, Cai Xuesong, Qu Xianqiang
4	Intelligent Welding Process Method for Marine Platform TKY Pipe Node Saddle	Invention Patent	Published	CN202511725558.0	2025-11-24	CN121670081A	2026-03-17	Tian Lei, Wang Bingming, Zhang Jianli, Yang Fengyan, Zhou Zhenhua, Sun Xiaofei, Dong Lutao, Chen Xin, Xu Wei, Li Weifeng
5	Single-Point Mooring System Liquid Slip Ring Installation and Testing Device	Invention Patent	Effective after substantive examination, published	CN202511687139.2	2025-11-18	CN121431061A	2026-01-30	Han Yanbo, Liang Guangqiang, Gao Zhilin, Wu Lei, Xiao Wen Sheng, Zhang Kai, Zhao Hongtao, Lu Xue, Gu Tiantao, Zuo Sheng, Zhang Shousen, Su Sheng’en, Fan Haiyang, Zhu Yi, Li Jianyong, Feng Aimin, Qin Ning, Meng Jia, Wei Xiaokang, Gao Zhibin, Liu Chao
6	Bearing Seal Device for Single-Point Mooring System	Invention Patent	Effective after substantive examination, published	CN202511678498.1	2025-11-17	CN121111988A	2025-12-12	Liang Guangqiang, Han Yanbo, Liu Bo, Zhang Shousen, Wu Lei, Liang Xianchao, Li Tuoyi, Xiao Wen Sheng, Gu Tiantao, Zuo Sheng, Zhu Yi, Wei Xiaokang, Liu Chao, Ma Bangyong, Zhang Pengfei
7	Method for Micro-Hardness Regulation of GMAW Root Weld of Acidic Sea Pipe	Invention Patent	Effective after substantive examination, published	CN202511641750.1	2025-11-11	CN121491493A	2026-02-10	Sun Youhui, Li Lixia, Yang Xiaofei, Liu Yongzhen, Li Zixuan, Lu Xinyu, Wu Xiaogang, Huang Jiangzhong, Ma Lishun, Zhou Xicheng, Zhao Cuihua, Sun Qiang, Xie Yinan
8	Subsea Plug-and-Play Connector	Invention Patent	Published	CN202511651233.2	2025-11-11	CN121566193A	2026-02-24	Wang Huifeng, Dong Xiaoyu, Jiang Donglei, Zhang Fei, Zhang Xu, Wei Xingchao, Ma Jianqiang, Ren Chenggang, Liu Tongliang, Chen Bin, Su Jian, Li Nan, Wang Yongqiang, Li Bin, Zhang Yangyang, Zhu Lin, Du Xinyu, Gu Xinyu
9	Support Structure and Removal Method for Subsea Pile-Driven Pipe Rack	Invention Patent	Effective after substantive examination, published	CN202511644184.X	2025-11-11	CN121573477A	2026-02-27	Wei Jiaguang, Liu Tao, Wang Zhen, Xie Weiwei, Wang Jiqiang, Qin Licheng, Shu Wei, Huang Shandian, Xu Shanzhi, Yang Hua, Wang Xingke
10	Underwater Large Suction Anchor Cylinder Pairing Device and Construction Method	Invention Patent	Published	CN202511641453.7	2025-11-11	CN121607868A	2026-03-06	Yan Bingsuo, Zhong Jibin, Feng Jialiang, Hu Xiaowei, Xu Chenyue, Gao Chaoyu, Gao Yuelong, Ren Guangxin, Liu Bo, Jiang Jia, Zhang Lianshuang, Wu Yixu, Wang Liming, Song Kai, Yu Zaifang, Zhou Bo
11	Method for Regulating Hardness of Acidic Sea Pipe Welding Surface of T-joint	Invention Patent	Published	CN202511641651.3	2025-11-11	CN121607747A	2026-03-06	Sun Youhui, Wang Jinsheng, Liu Yongzhen, Yang Xiaofei, Li Zixuan, Ma Lishun, Wu Xiaogang, Xin Ping, Song Guoxiang, Xie Yinan, Xu Hu, Bi Xiaojian, Cheng Zhengjun
12	Adjustable Gap Modular Isolation Block Structure for Turntable Bearing	Invention Patent	Effective after substantive examination, published	CN202511629313.8	2025-11-07	CN121111889A	2025-12-12	Duan Tongjiang, Gao Junchong, Du Shanshan, Zhang Di, Liu Bo, Wu Guangfu, Zhang Guanglei, Zhang Haiyan, Wang Man, Wang Zhongqiang, Liu Shibo
13	Underwater Pipeline Welding Quality Control Device for Shallow Water Projects	Invention Patent	Effective after substantive examination, published	CN202511624507.9	2025-11-07	CN121468093A	2026-02-06	Yan Bingsuo, Li Wei, Wang Xianfeng, Yang Hongping, Ma Qichao, Zhao Ruiyun, Lü Yingchuang, Xing Youwei, Tang Quanchang, Yi Minjie, Yu Benshui, Zhuang Suke, Tang Kaiyin, Liu Ran, Zhao Qingjie, Yang Zhong
14	Method for Vibratory Installation of Underwater Steel Cylinders with Uneven Soil Distribution	Invention Patent	Published	CN202511622838.9	2025-11-07	CN121556465A	2026-02-24	Huang Shandian, Shao Liangliang, Wang Zhen, Xie Weiwei, Dong Zhenqiang, Wang Zhiqiang, Liu Bin, Liang Xuexian, Zhang Xiaotian, Sun Fengju, Shang Tao, Zhou Bo
15	Gravity Type Flow Barrier Device	Invention Patent	Published	CN202511614811.5	2025-11-06	CN121608860A	2026-03-06	Liu Jianfeng, Du Ying, Wang Yandu, Jiang Yufei, Zhao Gang, Wei Yuxuan, Zheng Xingzhou, Han Jingyan, Liu Guanliang, Chen Shengli
16	Modular Top Cover for LNG Storage Tank	Invention Patent	Published	CN202511616312.X	2025-11-06	CN121654274A	2026-03-13	Wang Kaifeng, Yang Jian, Zhang Zhaojun, Wei Xiongbiao, Su Juan, Ren Pengcheng, Shi Lei, Lu Jing, Song Guangran, Yang Tao, Jia Haojie, Ai Qichang, Zhao Bu, Yin Xiaoming, Sun Chao
17	Underwater Dredging Machine Umbilical Cable Protection Device	Invention Patent	Effective after substantive examination, published	CN202511599639.0	2025-11-04	CN121295782A	2026-01-09	Gao Wei, Zheng Yongjun, Liu Ya, Rong Kejia, Zhang Jian, Shang Baoqiang, Wei Yueqiao, Liu Xuan, He Yamin, Zhang Yan
18	Experimental Measurement Device for Lateral Instability of Pipelines	Invention Patent	Effective after substantive examination, published	CN202511595259.X	2025-11-03	CN121475844A	2026-02-06	He Yang, Zhao Dang, Zhang Ying, Xiong Hairong, Li Qing, Hu Chunhong, Li Xiufeng, Yu Zhibing, Wang Bo, Yuan Jiankang, Wang Zhuo, Xia Richa, Ren Cuiqing, Wang Lin, Zhai Mo
19	Underwater Leveling Method for Single-Point Pipe Rack	Invention Patent	Effective after substantive examination, published	CN202511595260.2	2025-11-03	CN121493162A	2026-02-10	Bu Qingbin, Bu Qingjiang, Fu Xiangling, Wang Kai, Hu Dengfang, Li Wencheng, Wang Ronghua, Er Hongchuan, Tian Yang, Liu Fuzhi, Zhang Enhau, Cui Lizhong
20	Distributed Power Supply-Based Fire Automatic Alarm System Design Method	Invention Patent	Published	CN202511590295.7	2025-11-03	CN121545278A	2026-02-17	Chen Xiaoxu, Wang Naimin, Lü Xinze, Dun Zhangjing, Li Jun, Ma Guoyin, Ma Siyao, Chen Jian, Yin Xuedong, Zuo Jiao, Ye Qingsong, Shao Kui zhi, Zhang Weigang, Han Chao, Zhou Jiahe, Chen Zhiwei
21	Large Rotary System Locking Device	Invention Patent	Effective after substantive examination, published	CN202511595335.7	2025-11-03	CN121573104A	2026-02-27	Liu Bo, Ji Zhiyuan, Dong Baohui, Li Tuoyi, Shen Xiongwai, Hu Haifeng, Qiao Xiaoguo, Zhang Wenbo, Li Xueyan, Su Hehe, Zhang Siqi
22	Deep Learning-Based Prediction of Marine Environment for Adaptive Offshore Wind Power Devices and Optimization Method	Invention Patent	Effective after substantive examination, published	CN202511575119.6	2025-10-31	CN121408157A	2026-01-27	Li Wenjie, Yang Jian, Wei Xiongbiao, Su Juan, Fu Yu, Zhang Zhaojun, Jiang Yongsheng, Chen Cheng, Zhu Guanghui, Su Longlong, Su Jingwei, Tong Shuqian, Yi Jiming, Chen Xu
23	Grouting System for Large-Scale Pipe Rack Grouting Operations	Invention Patent	Effective after substantive examination, published	CN202511574621.5	2025-10-31	CN121407574A	2026-01-27	Bu Qingbin, Wang Kai, Hu Dengfang, Li Wencheng, Bu Qingjiang, Wang Ronghua, Zhang Qianpeng, Zhang Yongguo, Hong Tengfei, Song Xiaoxiu, Wang Dongjian, Zhao Hai
24	Real-time Tension Measurement Device for Tension Legs Platform Tendons	Invention Patent	Published	CN202511571934.5	2025-10-30	CN121702593A	2026-03-20	Deng Shi, Fan Shuwei, Li Shuai, Yang Xiaolong, Zhang Shiyuan, Zhang Fafu, Liu Xuping, Zhang Guanglei, Chen Zhongge, Ma Bangyong, Kong Fanxu
25	Towing Device for Forklifts	Invention Patent	Effective after substantive examination, published	CN202511555852.1	2025-10-29	CN121269578A	2026-01-06	He Guanghua, Liu Ning, Liu Guangbin, Yang Hongyuan, Zhang Zeqing, Wang Lei, Guo Youliang, Lu Xue, Ni Yaxu, Zhang Wenbin, Shang Biao, Shi Yuntao
26	Single-Point Large Three-Row Cylindrical Roller Turntable Bearing with Soft Grinding Machine	Invention Patent	Effective after substantive examination, published	CN202511545783.6	2025-10-28	CN121132414A	2025-12-16	Lü Bao, Zhang Shousen, Duan Tongjiang, Du Shanshan, Ma Bangyong, Zhao Ming, Li Junji, Li Yiyuan, Wu Guangfu, Niu Yaohui, Wang Xinhui
27	H-Beam Over-Welding Hole Grinding Device and Method	Invention Patent	Effective after substantive examination, published	CN202511550277.6	2025-10-28	CN121315750A	2026-01-13	Liu Yuxi, Yang Jianguo, Li Senhao, Du Zhaoxia, Chen Li, Zhang Kai, Jiang Ruijing, Zhang Zeqing, Liu Ruifeng, Shi Dongdong, Min Bo, Liu Hong, Liu Bo, Geng Xiaomin, Jia Xueqing, Nie Chuan
28	Phase-Stage Pressure Relief Valve Interlock System	Invention Patent	Effective after substantive examination, published	CN202511546454.3	2025-10-28	CN121408515A	2026-01-27	Wang Tao, Liu Jifei, Zhang Ruifeng, Zhang Chunge, Ju Wenjie, Sun Hao, Dai Lei, Li Wei, Yan Xuelian, Zhang Shuyan, Zhang Hong
29	Multi-Process Deep-Sea Autonomous Pipe Welding System	Invention Patent	Effective after substantive examination, published	CN202511530900.1	2025-10-24	CN121402755A	2026-01-27	Li Huailiang, Xue Long, Li Lixia, Wu Xiaogang, Sun Youhui, Zhang Ruiying, Huang Jiqiang, Guo Liwei, Fan Zhonghao, Li Lianbo, Su Yanfu
30	Underwater Electric Control Liquid Energy Storage Valve Controller and Valve	Invention Patent	Granted	CN202511502835.1	2025-10-21	CN121025241B	2026-01-02	Hou Lidong, Jin Ruijian, Zhang Fei, Zhang Niantao, Wang Yuchen, Li Bin, Shi Lei, Sun Wei
31	Tension Leg Floating Wind Turbine Retrieval Method	Invention Patent	Effective after substantive examination, published	CN202511503008.4	2025-10-21	CN121376081A	2026-01-23	Li Huailiang, Yang Xiaolong, Zhang Guanglei, Wu Haibo, Li Jinghui, Shi Jinkun, Wang Bin, Yang Hui, Huang Shandian, Chen Feng, Qiao Xiaoguo, Zhang Zhenyou
32	Underwater Pipeline Backfill Damage Assessment Test Device	Invention Patent	Effective after substantive examination, published	CN202511502161.5	2025-10-21	CN121409555A	2026-01-27	Hu Chunhong, Ma Kunming, Sun Guomin, He Yang, Ju Wenjie, Wang Leqin, Zhao Dang, Zhang Ying, Yuan Jiankang, Zhai Mo, Li Xu, Pan Yueran, Wang Wei, Zhang Boshuai
33	Telescopic Pipeline Welding Preheating Device	Invention Patent	Effective after substantive examination, published	CN202511502169.1	2025-10-21	CN121447378A	2026-02-03	Xu Wei, Liang Jie, Wang Wei, Chen Xin, Li Haiyang, Li Weifeng, Wang Hongliang, Yang Hexin, Liu Chenlong, Wang Xuanxuan, Yin Kaihua
34	Protective Cover Structure for Bolts and Nuts	Invention Patent	Effective after substantive examination, published	CN202511502342.8	2025-10-21	CN121497720A	2026-02-10	Wang Zhonghua, Shi Xinmin, Zhang Sanhua, Yu Qi, Wang Liguo, Liu Jiangtao, Song Guangquan, Tian Zhenxing, Wang Guozhu, Zhang Jieyin, Liu Qingchang, Yu Qianyi, Miao Yunshi
35	Water Displacement Process for Deep Water Single-Column Oil Storage and Unloading	Invention Patent	Effective after substantive examination, published	CN202511458128.7	2025-10-13	CN121317037A	2026-01-13	Shao Hailong, Su Feng, Li Changwei, Wang Aijun, Zhou Peng
36	Guide Ring and Hydraulic Impact Hammer	Invention Patent	Effective after substantive examination, published	CN202511445127.9	2025-10-10	CN121363207A	2026-01-20	Bu Qingbin, Fu Xiangling, Wang Kai, Hu Dengfang, Bu Fanxu, Wang Chao, Er Hongchuan, Xu Tiewei, Zhou Lin, Zhang Laifeng, Zhu Shiha, Guo Yongchang
37	Real-time Feedback System for Root Welding Penetration of STT	Invention Patent	Effective after substantive examination, published	CN202511445126.4	2025-10-10	CN121491483A	2026-02-10	Li Weifeng, Xu Wei, Wang Wei, Chen Xin, Liu Hailin, Wang Zhijiang, Yuan Jie, Zhai Zhiguo, Lin Yongzhang, Liu Ran
38	Binocular Vision and IMU Hybrid System for Welder Gun Operation Posture Collection	Invention Patent	Published	CN202511445124.5	2025-10-10	CN121589495A	2026-03-03	Li Weifeng, Chen Xin, Wang Wei, Liu Hailin, Xu Wei, Lin Yongzhang, Yuan Jie, Zhai Zhiguo, Liu Ran, Wu Shaojie, Guo Lianjing, Chen Yiming, He Fengshan, Wang Hongliang, Jia Xueqing
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