| The global marine oil and gas resources are abundant and the reserves are huge.It has become the focus of oil and gas resources exploitation in the world.The research on mining equipment and technology has been highly valued by all offshore oil and gas exploration countries.The guide rope tensioner is an important part of the heave compensation system and is an indispensable high-end equipment for offshore oil and gas exploration.Due to the late start of China's offshore oil equipment and weak foundation,the research on tensioner technology is still in its infancy.At present,only a few foreign large-scale marine equipment companies have mastered the design and manufacturing technology of guide rope tensioners.Its production design of the guide rope tensioner has been widely used in offshore drilling platforms.Therefore,this paper studies the guide rope tensioner system and designs a set of guide rope tensioner system based on the cylindrical FWPSO to realize the heave compensation function under complex sea conditions.A design method of guide rope tensioner system based on cylindrical FWPSO is proposed.According to the condition of the cylindrical FWPSO platform and the tensioning method,the principle design of the wire rope guide rope tensioner system is carried out,and the constant tension output of the system is realized by the movable pulley block,the hydraulic cylinder and the air pressure container;according to the deck of the cylindrical FWPSO Distribution,considering the effective utilization of the platform,the layout design of the guide rope tensioner system was carried out;the main components of the guide rope tensioner system were designed and calculated according to ASME and API standards,and some key components were evaluated.Nuclear,a pilot rope tensioner with heave compensation function was initially designed.Based on the designed guide rope tensioner system,the mathematical model of the guide rope tensioner system is established,and the formula of the stiffness and tension of the guide rope tensioner is derived.The simulation model of the guide rope tensioner system was established by AMESim software,and the influence of the structural parameters of the guide rope tensioner system on the performance of the guide rope tensioner was studied.Based on the NLPQL algorithm,the structural parameters of the guide rope tensioner system are optimized,and the optimal combination of the structural parameters of the guide rope tensioner is obtained,so that the guide rope tensioner can achieve the best performance under the optimal parameter combination.According to the target working environment of the designed guide rope tensioner system,the guide rope tensioner system model was established in OrcaFlex software,and the dynamics of the guide rope in working sea conditions,once a year,and once in ten years were studied.The tension characteristics and the trajectory of the blowout preventer prove that the guide rope tensioner in this design can meet the normal working and survival requirements.The parameter sensitivity analysis of the environmental factors affecting the heave compensation performance of the guide rope tensioner system and the tension of the tensioner are analyzed.The influence of various factors on the performance of the guide rope tensioner is obtained,and the guide rope for design and development is finally proved.The tensioner system is capable of meeting the heave compensation function under complex conditions. |
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