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
为确保管路系统的安全有效运行,着重考虑舱内液体部分装载时晃荡载荷对舱内管路及支架的影响。以某浮式生产储卸油装置(Floating Production Storage and Offloading,FPSO)货油系统工程为例,基于CAESARⅡ软件建立管路模型,并对其进行管...为确保管路系统的安全有效运行,着重考虑舱内液体部分装载时晃荡载荷对舱内管路及支架的影响。以某浮式生产储卸油装置(Floating Production Storage and Offloading,FPSO)货油系统工程为例,基于CAESARⅡ软件建立管路模型,并对其进行管路应力分析。计算结果表明:系统在受到晃荡力作用后,管路的一次应力明显增加,且已经超过材料许用值,初始设定的管路壁厚与支架数量不能满足系统的使用要求。可通过增加管路壁厚或支架数量的方式来降低一次应力,解决因应力超标引起管路损坏、系统失效的危害。研究成果可为FPSO货油舱管道分析提供一定指导。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.
文摘为确保管路系统的安全有效运行,着重考虑舱内液体部分装载时晃荡载荷对舱内管路及支架的影响。以某浮式生产储卸油装置(Floating Production Storage and Offloading,FPSO)货油系统工程为例,基于CAESARⅡ软件建立管路模型,并对其进行管路应力分析。计算结果表明:系统在受到晃荡力作用后,管路的一次应力明显增加,且已经超过材料许用值,初始设定的管路壁厚与支架数量不能满足系统的使用要求。可通过增加管路壁厚或支架数量的方式来降低一次应力,解决因应力超标引起管路损坏、系统失效的危害。研究成果可为FPSO货油舱管道分析提供一定指导。
