深水TTR立管选型及初始设计研究
发布时间：2018-10-16 16:57
【摘要】：立管是海洋油气资源开发系统中的重要组成构件,但同时也是最薄弱的构件之一,因此深水立管系统设计的安全性对于海洋油气资源开发起着至关重要的作用。本文重点研究基于深水TTR立管系统的立管选型及初始设计问题,综合考虑油气管线输送能力和套管强度两方面因素,采用多相流理论计算立管压降及输送能力,并以此为基准迭代计算油管及套管尺寸,最终对选取的油、套管进行壁厚设计校核。 本文首先介绍了深水立管系统设计准则,其中包括设计原则,设计阶段、设计流程以及设计基础文件内容；列举了立管设计所依据的规范和设计过程中主要使用的商用软件,并综述了立管系统设计的研究进展。其次,基于国家863计划“顶张紧式立管(TTR)设计理论研究及软件开发”建立了立管设计基础文件,包括TLP平台主尺度、油藏及井口数据以及立管所处的海洋环境数据。 本文在API规范的基础上提出了TTR前端初始设计的流程,综合考虑了油管和套管之间的关系。再次,根据油藏数据,采用多相流理论中关于垂直上升管流压降计算方法,对油管进行水力分析计算,计算其在不同流速下对应的压力梯度和压降,选取最小压降对应的油管内径,作为初始油管设计直径,并根据API SPEC5L和API SPEC5CT,进行材料的选择并确定油管、套管尺寸。最后针对选取的立管尺寸,根据API RP2RD规范要求,进行立管最小壁厚校核分析。
[Abstract]:Riser is an important component of offshore oil and gas resources development system, but it is also one of the weakest components. Therefore, the design safety of deepwater riser system plays an important role in offshore oil and gas resources development. This paper focuses on the selection and initial design of riser based on deep-water TTR riser system. Considering the factors of oil and gas pipeline transportation capacity and casing strength, the pressure drop and conveying capacity of riser are calculated by multi-phase flow theory. The size of tubing and casing is calculated by iterative method, and the wall thickness of selected oil and casing is checked. This paper first introduces the design criteria of deepwater riser system, including design principles, design stages, design flow and design foundation documents, and lists the specifications for riser design and the commercial software used in the design process. The research progress of riser system design is summarized. Secondly, based on the National 863 Program "(TTR) design theory research and software development of top tensioning riser", the basic documents of riser design are established, including the main scale of TLP platform, reservoir and wellhead data and marine environment data of riser. In this paper, based on the API specification, the flow chart of initial design of TTR front-end is proposed, and the relationship between tubing and casing is considered synthetically. Thirdly, according to reservoir data, the hydraulic analysis and calculation of pressure drop of vertical upward pipe flow in multiphase flow theory are carried out, and the corresponding pressure gradient and pressure drop under different velocity of flow are calculated. The inner diameter of the tubing corresponding to the minimum pressure drop is selected as the initial design diameter of the tubing, and the material is selected according to API SPEC5L and API SPEC5CT, and the size of tubing and casing is determined. Finally, according to the requirements of API RP2RD code, the minimum wall thickness of riser is checked and analyzed according to the selected riser dimensions.
【学位授予单位】：大连理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：P756.2
本文编号：2275038
[Abstract]:Riser is an important component of offshore oil and gas resources development system, but it is also one of the weakest components. Therefore, the design safety of deepwater riser system plays an important role in offshore oil and gas resources development. This paper focuses on the selection and initial design of riser based on deep-water TTR riser system. Considering the factors of oil and gas pipeline transportation capacity and casing strength, the pressure drop and conveying capacity of riser are calculated by multi-phase flow theory. The size of tubing and casing is calculated by iterative method, and the wall thickness of selected oil and casing is checked. This paper first introduces the design criteria of deepwater riser system, including design principles, design stages, design flow and design foundation documents, and lists the specifications for riser design and the commercial software used in the design process. The research progress of riser system design is summarized. Secondly, based on the National 863 Program "(TTR) design theory research and software development of top tensioning riser", the basic documents of riser design are established, including the main scale of TLP platform, reservoir and wellhead data and marine environment data of riser. In this paper, based on the API specification, the flow chart of initial design of TTR front-end is proposed, and the relationship between tubing and casing is considered synthetically. Thirdly, according to reservoir data, the hydraulic analysis and calculation of pressure drop of vertical upward pipe flow in multiphase flow theory are carried out, and the corresponding pressure gradient and pressure drop under different velocity of flow are calculated. The inner diameter of the tubing corresponding to the minimum pressure drop is selected as the initial design diameter of the tubing, and the material is selected according to API SPEC5L and API SPEC5CT, and the size of tubing and casing is determined. Finally, according to the requirements of API RP2RD code, the minimum wall thickness of riser is checked and analyzed according to the selected riser dimensions.
【学位授予单位】：大连理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：P756.2
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