After many years of exploitation,onshore oil and gas resources are about to enter a recession period.Oil and gas will mainly come from oceans in the future.Generally speaking,the exploration and production(E&P)cos...After many years of exploitation,onshore oil and gas resources are about to enter a recession period.Oil and gas will mainly come from oceans in the future.Generally speaking,the exploration and production(E&P)cost of oil from offshore is much higher than that of oil from onshore,so it is more sensitive to oil price.However,in recent years,oil price has been hovering at a low level for a long time,almost close to or even lower than the E&P cost of oil,which directly affects the development of oilfields.Besides the influence of oil price,some oilfields present the characteristics of marginal reserve scale,short peak production period and output rapidly declining.There leads to short economic life period and makes the economic benefit close to or lower than oilfield’s hurdle rate,which increases the difficulty of offshore oilfield development.As an important part of oilfield development,Floating Production Storage and Offloading unit,its investment mode and rent mode directly affect overall oilfield’s rate of return and the economic life.This paper chooses lease mode as the research object based on the analysis of investment mode,and further puts forward rent mode related with oil price through the analysis of traditional rent mode,and illustrates the advantages and disadvantages of various rent modes and their applicability so that the lessor chooses the right mode to achieve Win-Win with Oil Company and promotes the development of oilfields under low oil price.展开更多
The procedure of assessment of structural fatigue strength of an offshore floating production and storage and offloading unit (FPSO) in this paper. The emphasis is placed on the long-term prediction of wave induced lo...The procedure of assessment of structural fatigue strength of an offshore floating production and storage and offloading unit (FPSO) in this paper. The emphasis is placed on the long-term prediction of wave induced loading, the refined finite element model for hot spot stress calculation, the combination of stress components, and fatigue damage assessment based on S-N curve.展开更多
The basis, process and results of the demonstration of the main dimensions of a 75000t floating production and storage vessel are discussed in this paper. A simple but reliable orthogonal design method is applied in t...The basis, process and results of the demonstration of the main dimensions of a 75000t floating production and storage vessel are discussed in this paper. A simple but reliable orthogonal design method is applied in the main dimension optimization. The ideas of gradual approximation and feedback from various aspects are put into effect. During the demonstration, in order to make the model tally with the actual situation, the draft design is closely related to the computational analysis, so that the demonstration model can be verified at any time; the handling of the overall system is closely related to the research of each item, which is beneficial not only to the mastery of various regularities, but also to the balance of decisions. Finally, according to the computational results and the regularities obtained from analysis, the main dimensions are determined.展开更多
The internal turret mooring system for oil production storage vessels is a developing type ofoffshore floating production system suitable for deep water and harsh environmental application. In this paper, some achieve...The internal turret mooring system for oil production storage vessels is a developing type ofoffshore floating production system suitable for deep water and harsh environmental application. In this paper, some achievements in our research work are presented. The description includes: dynamic analysis of mooring system, research on performance of turret assembly, influence of vessel dimensions and hull forms on mooring performance, model tests under combined action of environmental forces in basin, and hull structural strength analysis.展开更多
基于企鹅浮式生产储卸油装置(Floating Production Storage and Offloading,FPSO)项目,对比不同安装方法的优缺点,采用盘卷安装法完成外输软管安装。采用盘卷安装法进行FPSO外输软管安装在国内鲜有实例,详细描述该方法的施工顺序和要点...基于企鹅浮式生产储卸油装置(Floating Production Storage and Offloading,FPSO)项目,对比不同安装方法的优缺点,采用盘卷安装法完成外输软管安装。采用盘卷安装法进行FPSO外输软管安装在国内鲜有实例,详细描述该方法的施工顺序和要点,可为其他类似项目的外输软管安装提供参考。展开更多
针对浮式生产储油船(Floating production storage and offloading, FPSO)在深水作业时面临的恶劣海况问题,为保证其服役期间的安全性及作业效率,需要准确计算非线性波浪荷载和运动响应。本文应用基于计算流体动力学(Computational flui...针对浮式生产储油船(Floating production storage and offloading, FPSO)在深水作业时面临的恶劣海况问题,为保证其服役期间的安全性及作业效率,需要准确计算非线性波浪荷载和运动响应。本文应用基于计算流体动力学(Computational fluid dynamics, CFD)的软件STAR-CCM+建立了针对实尺度FPSO模型的数值水池,基于Richardson外推法,针对时间步长和网格尺寸,分析了二者的收敛性和数值不确定度。使用该数值水池模拟了不同波浪工况作用下FPSO的运动响应,计算其受到的二阶波浪力,并与势流结果进行对比。结果发现,随着波陡增大,平均波浪力的CFD结果逐渐大于势流结果,且呈现差异化增大。而波陡大于1/15时,纵摇的CFD结果明显大于势流结果。说明大波陡条件下,黏性效应对平均波浪力和纵摇影响明显,为恶劣海况下预报及修正FPSO的二阶波浪力和运动提供了参考。展开更多
基于现有的渤海浮式生产储卸油装置(Floating Production Storage and Offloading,FPSO)实测数据,开展海洋核动力平台(Marine Nuclear Power Platform,MNPP)定位系统多体动力特性分析。建立MNPP定位系统的多刚体动力学模型,通过MNPP与...基于现有的渤海浮式生产储卸油装置(Floating Production Storage and Offloading,FPSO)实测数据,开展海洋核动力平台(Marine Nuclear Power Platform,MNPP)定位系统多体动力特性分析。建立MNPP定位系统的多刚体动力学模型,通过MNPP与渤海某FPSO的响应幅值算子(Response Amplitude Operator,RAO),计算FPSO船体实测数据与MNPP响应的比例系数;根据FPSO船体实测数据计算MNPP六自由度数据,并采用经验模态分解(Empirical Mode Decomposition,EMD)方法保留原始数据的波频成分,在此基础上计算定位系统的系泊回复能力和各铰节点的受力行为。通过与FPSO软刚臂系泊系统受力状态进行对比分析,验证MNPP定位系统在实测海况下设计的合理性。可为MNPP系泊结构设计和安全运行提供科学的分析手段。展开更多
为区别于传统经验公式计算管道应力的方法,采用有限元方法计算浮式生产储卸油装置(Floating Production Storage and Offloading,FPSO)船体变形,提取具体管道支架的位移值,并利用CAESARⅡ软件进行管道应力计算。有限元预报得到的管道应...为区别于传统经验公式计算管道应力的方法,采用有限元方法计算浮式生产储卸油装置(Floating Production Storage and Offloading,FPSO)船体变形,提取具体管道支架的位移值,并利用CAESARⅡ软件进行管道应力计算。有限元预报得到的管道应力更加准确,而经验公式得到偏保守的结果。建议在对FPSO管道进行初步设计时可采用经验公式方法,在进行详细设计和局部管道应力校核时可采用数值仿真方法。展开更多
借助船级社规范与MATLAB软件,开发可提取浮式生产储卸油装置(Floating Production Storage and Offloading,FPSO)管道任意位置处加速度的程序,以便更好地对FPSO主甲板冷却水管路系统进行应力分析。将该系统任意位置处实际加速度值和FPS...借助船级社规范与MATLAB软件,开发可提取浮式生产储卸油装置(Floating Production Storage and Offloading,FPSO)管道任意位置处加速度的程序,以便更好地对FPSO主甲板冷却水管路系统进行应力分析。将该系统任意位置处实际加速度值和FPSO船体重心处加速度值以均布载荷形式分别施加至管道上,利用CAESARⅡ软件分析在满载工况条件下该系统的应力变化。结果表明,在FPSO满载工况条件下,采用重心处加速度值得到的结果相较于其自身实际加速度值的作用结果会出现应力冗余和应力不足的情况,例如节点50应力增加1.01%,而节点2570应力减小0.19%。展开更多
以某大型浮式生产储油卸油装置(Floating Production Storage and Offloading,FPSO)为例,确定其公共广播和通用报警(Public Address and General Alarm,PAGA)系统声压计算所需参数及相关参数的估计值,介绍室内和室外声压计算方法。在没...以某大型浮式生产储油卸油装置(Floating Production Storage and Offloading,FPSO)为例,确定其公共广播和通用报警(Public Address and General Alarm,PAGA)系统声压计算所需参数及相关参数的估计值,介绍室内和室外声压计算方法。在没有软件的前提下,通过计算公式确定某个房间或某个位置的各声响装置(喇叭/扬声器)所需电功率,为类似项目的PAGA系统的声压计算提供参考。展开更多
文摘After many years of exploitation,onshore oil and gas resources are about to enter a recession period.Oil and gas will mainly come from oceans in the future.Generally speaking,the exploration and production(E&P)cost of oil from offshore is much higher than that of oil from onshore,so it is more sensitive to oil price.However,in recent years,oil price has been hovering at a low level for a long time,almost close to or even lower than the E&P cost of oil,which directly affects the development of oilfields.Besides the influence of oil price,some oilfields present the characteristics of marginal reserve scale,short peak production period and output rapidly declining.There leads to short economic life period and makes the economic benefit close to or lower than oilfield’s hurdle rate,which increases the difficulty of offshore oilfield development.As an important part of oilfield development,Floating Production Storage and Offloading unit,its investment mode and rent mode directly affect overall oilfield’s rate of return and the economic life.This paper chooses lease mode as the research object based on the analysis of investment mode,and further puts forward rent mode related with oil price through the analysis of traditional rent mode,and illustrates the advantages and disadvantages of various rent modes and their applicability so that the lessor chooses the right mode to achieve Win-Win with Oil Company and promotes the development of oilfields under low oil price.
文摘The procedure of assessment of structural fatigue strength of an offshore floating production and storage and offloading unit (FPSO) in this paper. The emphasis is placed on the long-term prediction of wave induced loading, the refined finite element model for hot spot stress calculation, the combination of stress components, and fatigue damage assessment based on S-N curve.
文摘The basis, process and results of the demonstration of the main dimensions of a 75000t floating production and storage vessel are discussed in this paper. A simple but reliable orthogonal design method is applied in the main dimension optimization. The ideas of gradual approximation and feedback from various aspects are put into effect. During the demonstration, in order to make the model tally with the actual situation, the draft design is closely related to the computational analysis, so that the demonstration model can be verified at any time; the handling of the overall system is closely related to the research of each item, which is beneficial not only to the mastery of various regularities, but also to the balance of decisions. Finally, according to the computational results and the regularities obtained from analysis, the main dimensions are determined.
基金Project supported by special scientific research foundation for doctoral subjects
文摘The internal turret mooring system for oil production storage vessels is a developing type ofoffshore floating production system suitable for deep water and harsh environmental application. In this paper, some achievements in our research work are presented. The description includes: dynamic analysis of mooring system, research on performance of turret assembly, influence of vessel dimensions and hull forms on mooring performance, model tests under combined action of environmental forces in basin, and hull structural strength analysis.
文摘基于企鹅浮式生产储卸油装置(Floating Production Storage and Offloading,FPSO)项目,对比不同安装方法的优缺点,采用盘卷安装法完成外输软管安装。采用盘卷安装法进行FPSO外输软管安装在国内鲜有实例,详细描述该方法的施工顺序和要点,可为其他类似项目的外输软管安装提供参考。
文摘针对浮式生产储油船(Floating production storage and offloading, FPSO)在深水作业时面临的恶劣海况问题,为保证其服役期间的安全性及作业效率,需要准确计算非线性波浪荷载和运动响应。本文应用基于计算流体动力学(Computational fluid dynamics, CFD)的软件STAR-CCM+建立了针对实尺度FPSO模型的数值水池,基于Richardson外推法,针对时间步长和网格尺寸,分析了二者的收敛性和数值不确定度。使用该数值水池模拟了不同波浪工况作用下FPSO的运动响应,计算其受到的二阶波浪力,并与势流结果进行对比。结果发现,随着波陡增大,平均波浪力的CFD结果逐渐大于势流结果,且呈现差异化增大。而波陡大于1/15时,纵摇的CFD结果明显大于势流结果。说明大波陡条件下,黏性效应对平均波浪力和纵摇影响明显,为恶劣海况下预报及修正FPSO的二阶波浪力和运动提供了参考。
文摘基于现有的渤海浮式生产储卸油装置(Floating Production Storage and Offloading,FPSO)实测数据,开展海洋核动力平台(Marine Nuclear Power Platform,MNPP)定位系统多体动力特性分析。建立MNPP定位系统的多刚体动力学模型,通过MNPP与渤海某FPSO的响应幅值算子(Response Amplitude Operator,RAO),计算FPSO船体实测数据与MNPP响应的比例系数;根据FPSO船体实测数据计算MNPP六自由度数据,并采用经验模态分解(Empirical Mode Decomposition,EMD)方法保留原始数据的波频成分,在此基础上计算定位系统的系泊回复能力和各铰节点的受力行为。通过与FPSO软刚臂系泊系统受力状态进行对比分析,验证MNPP定位系统在实测海况下设计的合理性。可为MNPP系泊结构设计和安全运行提供科学的分析手段。
文摘为区别于传统经验公式计算管道应力的方法,采用有限元方法计算浮式生产储卸油装置(Floating Production Storage and Offloading,FPSO)船体变形,提取具体管道支架的位移值,并利用CAESARⅡ软件进行管道应力计算。有限元预报得到的管道应力更加准确,而经验公式得到偏保守的结果。建议在对FPSO管道进行初步设计时可采用经验公式方法,在进行详细设计和局部管道应力校核时可采用数值仿真方法。
文摘借助船级社规范与MATLAB软件,开发可提取浮式生产储卸油装置(Floating Production Storage and Offloading,FPSO)管道任意位置处加速度的程序,以便更好地对FPSO主甲板冷却水管路系统进行应力分析。将该系统任意位置处实际加速度值和FPSO船体重心处加速度值以均布载荷形式分别施加至管道上,利用CAESARⅡ软件分析在满载工况条件下该系统的应力变化。结果表明,在FPSO满载工况条件下,采用重心处加速度值得到的结果相较于其自身实际加速度值的作用结果会出现应力冗余和应力不足的情况,例如节点50应力增加1.01%,而节点2570应力减小0.19%。
文摘以某大型浮式生产储油卸油装置(Floating Production Storage and Offloading,FPSO)为例,确定其公共广播和通用报警(Public Address and General Alarm,PAGA)系统声压计算所需参数及相关参数的估计值,介绍室内和室外声压计算方法。在没有软件的前提下,通过计算公式确定某个房间或某个位置的各声响装置(喇叭/扬声器)所需电功率,为类似项目的PAGA系统的声压计算提供参考。
