Adhesive hydrogels for wet environments show great promise in a broad range of applications,such as biomedical engineering[1],surgical materials[2],underwater sensing and deep-sea exploration[3].A longstanding challen...Adhesive hydrogels for wet environments show great promise in a broad range of applications,such as biomedical engineering[1],surgical materials[2],underwater sensing and deep-sea exploration[3].A longstanding challenge in this field is achieving instant,robust,and repeatable underwater adhesion,which stems from the adhesion prevention or deterioration by water through versatile mechanisms[4].Biological underwater adhesives secreted by organisms like mussels,sandcastle worms,and barnacles have inspired studies into their adhesive mechanisms,thereby guiding the design of synthetic counterparts[4].However,traditional optimization methods for developing such hydrogels remain reliant on experimental trial and error,which is costly and time-consuming,significantly hindering the development of advanced adhesive materials.展开更多
Marine risers play a key role in the deep and ultra-deep water oil and gas production. The vortex-induced vibration （VIV） of marine risers constitutes an important problem in deep water oil exploration and productio...Marine risers play a key role in the deep and ultra-deep water oil and gas production. The vortex-induced vibration （VIV） of marine risers constitutes an important problem in deep water oil exploration and production. VIV will result in high rates of structural failure of marine riser due to fatigue damage accumulation and diminishes the riser fatigue life. In-service monitoring or full scale testing is essential to improve our understanding of V1V response and enhance our ability to predict fatigue damage. One ma- rine riser fatigue acoustic telemetry scheme is proposed and an engineering prototype machine has been developed to monitor deep and ultra-deep water risers＇ fatigue and failure that can diminish the riser fatigue life and lead to economic losses and eco-catastrophe. Many breakthroughs and innovation have been achieved in the process of developing an engineering prototype machine. Sea trials were done on the 6th generation deep-water drilling platform HYSY-981 in the South China Sea. The inclination monitoring results show that the marine riser fatigue acoustic telemetry scheme is feasible and reliable and the engineering prototype machine meets the design criterion and can match the requirements of deep and ultra-deep water riser fatigue monitoring. The rich experience and field data gained in the sea trial which provide much technical support for optimization in the engineering prototype machine in the future.展开更多
基金supported by the Beijing Nova Program(20220484096)Science Foundation of China University of Petroleum-Beijing(2462023QNXZ005)Young Elite Scientist Sponsorship Program by Beijing Association for Science and Technology(BYESS20244155).
文摘Adhesive hydrogels for wet environments show great promise in a broad range of applications,such as biomedical engineering[1],surgical materials[2],underwater sensing and deep-sea exploration[3].A longstanding challenge in this field is achieving instant,robust,and repeatable underwater adhesion,which stems from the adhesion prevention or deterioration by water through versatile mechanisms[4].Biological underwater adhesives secreted by organisms like mussels,sandcastle worms,and barnacles have inspired studies into their adhesive mechanisms,thereby guiding the design of synthetic counterparts[4].However,traditional optimization methods for developing such hydrogels remain reliant on experimental trial and error,which is costly and time-consuming,significantly hindering the development of advanced adhesive materials.
基金supported in part by the National Science and Technology Major Project of China (2011ZX 05026-001-06)the National Natural Science Foundation of China (51249005 60972153)
文摘Marine risers play a key role in the deep and ultra-deep water oil and gas production. The vortex-induced vibration （VIV） of marine risers constitutes an important problem in deep water oil exploration and production. VIV will result in high rates of structural failure of marine riser due to fatigue damage accumulation and diminishes the riser fatigue life. In-service monitoring or full scale testing is essential to improve our understanding of V1V response and enhance our ability to predict fatigue damage. One ma- rine riser fatigue acoustic telemetry scheme is proposed and an engineering prototype machine has been developed to monitor deep and ultra-deep water risers＇ fatigue and failure that can diminish the riser fatigue life and lead to economic losses and eco-catastrophe. Many breakthroughs and innovation have been achieved in the process of developing an engineering prototype machine. Sea trials were done on the 6th generation deep-water drilling platform HYSY-981 in the South China Sea. The inclination monitoring results show that the marine riser fatigue acoustic telemetry scheme is feasible and reliable and the engineering prototype machine meets the design criterion and can match the requirements of deep and ultra-deep water riser fatigue monitoring. The rich experience and field data gained in the sea trial which provide much technical support for optimization in the engineering prototype machine in the future.
