一种新型干树式半潜平台设计
发布时间：2018-11-24 14:34
【摘要】：开发了一种新型的深吃水干树式半潜生产平台(TCDD-Semi),该平台可用于中国南海深水区域的油气田开发。它的一个显著特点是立柱的截面形状呈现为渐变形式,而非传统的等截面形式。立柱的底部最大,向上逐渐变小,再结合适当的下浮体设计,能够为平台在服役前期及在位状态时提供足够的浮力以及稳性。最重要的是这种新型立柱的设计能够明显地减小平台在恶劣海况时的垂向运动,从而使在平台上布置具有干式采油树的TTR立管系统成为可能。此外,这种渐变式的立柱设计也有利于减弱平台在流作用下的涡激诱导运动(VIM)。分析结果表明这种渐变式立柱半潜平台可以明显降低平台的垂向运动,也可以在码头组装时提供足够的浮力以及在平台下沉过程中提供足够的稳性。平台优越的垂向运动性能可以使顶部张紧式立管的行程范围限制在10.5 m之内(包括平台偏移、垂荡运动、潮汐影响、海床沉降、热膨胀等因素)。分析结果表明平台的垂荡范围、水平偏移、倾侧角度、上部模块重心处的加速度等可以满足设计要求,证明了这种新型干树式半潜平台的可行性。
[Abstract]:A new type of deep draught and dry tree semi-submersible production platform (TCDD-Semi) is developed, which can be used in the development of oil and gas fields in the deep-water area of the South China Sea. A remarkable feature of the column is that the section shape of the column presents a gradual form rather than a traditional iso-section form. The bottom of the column is the largest and gradually smaller up, and combined with the proper design of the floating body, it can provide sufficient buoyancy and stability for the platform in the pre-service and in the position state. The most important thing is that the design of this new type of column can obviously reduce the vertical motion of the platform under bad sea conditions, thus making it possible to arrange the TTR riser system with dry-type oil production tree on the platform. In addition, this gradual column design is also beneficial to attenuate the vortex-induced motion (VIM). Of the platform under the action of flow. The analysis results show that the platform can obviously reduce the vertical motion of the platform, provide sufficient buoyancy in the assembly of the wharf and provide enough stability during the sinking of the platform. The excellent vertical motion performance of the platform can limit the travel range of the top tensioned riser within 10.5 m (including the factors of platform offset, heave motion, tidal effect, seabed subsidence, thermal expansion and so on). The results show that the swaying range, horizontal deviation, tilting angle and acceleration at the center of gravity of the upper module can meet the design requirements, which proves the feasibility of this new type of dry tree semi-submersible platform.
【作者单位】： 深圳深德海洋工程有限公司;三一海洋重工研究院;
【基金】：广东省引进创新创业团队计划资助项目(2013G058)
【分类号】：TE952
本文编号：2354093
[Abstract]:A new type of deep draught and dry tree semi-submersible production platform (TCDD-Semi) is developed, which can be used in the development of oil and gas fields in the deep-water area of the South China Sea. A remarkable feature of the column is that the section shape of the column presents a gradual form rather than a traditional iso-section form. The bottom of the column is the largest and gradually smaller up, and combined with the proper design of the floating body, it can provide sufficient buoyancy and stability for the platform in the pre-service and in the position state. The most important thing is that the design of this new type of column can obviously reduce the vertical motion of the platform under bad sea conditions, thus making it possible to arrange the TTR riser system with dry-type oil production tree on the platform. In addition, this gradual column design is also beneficial to attenuate the vortex-induced motion (VIM). Of the platform under the action of flow. The analysis results show that the platform can obviously reduce the vertical motion of the platform, provide sufficient buoyancy in the assembly of the wharf and provide enough stability during the sinking of the platform. The excellent vertical motion performance of the platform can limit the travel range of the top tensioned riser within 10.5 m (including the factors of platform offset, heave motion, tidal effect, seabed subsidence, thermal expansion and so on). The results show that the swaying range, horizontal deviation, tilting angle and acceleration at the center of gravity of the upper module can meet the design requirements, which proves the feasibility of this new type of dry tree semi-submersible platform.
【作者单位】： 深圳深德海洋工程有限公司;三一海洋重工研究院;
【基金】：广东省引进创新创业团队计划资助项目(2013G058)
【分类号】：TE952
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