本文選題：干樹式半潛平臺　切入點：頂張緊立管　出處：《上海交通大學(xué)》2014年碩士論文

【摘要】：石油化工產(chǎn)品是一個國家工業(yè)發(fā)展的基礎(chǔ)原料。近年來，隨著陸地石油的大量開采，人們開始將目光投向蘊含著大量資源的海洋。為了開發(fā)海洋油氣資源，人們設(shè)計了各種不同的海洋結(jié)構(gòu)物。當前，海洋油氣開發(fā)逐漸向深水發(fā)展，這一趨勢對海洋結(jié)構(gòu)物設(shè)計與分析提出了新的挑戰(zhàn)。 然而不管采用何種浮式結(jié)構(gòu)物來進行海洋油氣開發(fā)，都需要有立管系統(tǒng)來連接結(jié)構(gòu)物與海底井口。立管在海洋油氣開發(fā)中起著重要的作用，然而它同時卻也是油氣開發(fā)系統(tǒng)中最薄弱的環(huán)節(jié)之一。在各種形式的立管之中，頂張緊立管既可用于鉆井、完井、修井，又可用于注水和生產(chǎn)。本文以頂張緊立管(TTR)為例，進行立管的整體分析和設(shè)計工作。主要內(nèi)容包括： (1)運用Aqua和Orcaflex軟件來進行新型深吃水半潛式平臺的運動分析。分析該平臺的頻域特性，計算在不同海況下該新型平臺與錨泊系統(tǒng)、立管的耦合運動，獲取平臺的波頻和低頻時域運動數(shù)據(jù)，作為后續(xù)立管分析的基礎(chǔ)。 (2)運用Orcaflex軟件來分析頂張緊立管的頂張力因子、頂張力器剛度對立管運動響應(yīng)及受力的影響，結(jié)果表明，頂張力因子對立管運動響應(yīng)及受力影響顯著，頂張力器剛度對立管相對于平臺的升沉運動影響顯著。 (3)運用Matlab編制程序?qū)崿F(xiàn)進化策略算法來進行立管海底端口的布置研究。將自行編制的程序的計算結(jié)果與Lingo計算結(jié)果進行對比，結(jié)果表明，程序能夠有效提高計算效率。同時，對于立管數(shù)目較多的情況，提出了采用分組計算的方法，可以在保證結(jié)果有效性的前提下，顯著減少計算時間。 (4)運用Orcaflex軟件，依據(jù)立管規(guī)范API RP2RD來進行該新型平臺的頂張緊立管系統(tǒng)設(shè)計。進行立管運動響應(yīng)計算，，立管強度校核，分析立管疲勞損傷是否滿足工作壽命要求，同時，進行立管之間的干擾分析，以避免立管之間碰撞的發(fā)生。
[Abstract]:Petrochemical products are the basic raw materials for the industrial development of a country.In recent years, with the massive exploitation of land oil, people begin to look to the ocean which contains a lot of resources.In order to develop marine oil and gas resources, various marine structures have been designed.At present, the development of offshore oil and gas is gradually moving to deep water, which poses a new challenge to the design and analysis of marine structures.However, no matter what floating structure is used for offshore oil and gas development, a riser system is needed to connect the structure to the bottom wellhead.Riser plays an important role in offshore oil and gas development, but it is also one of the weakest links in oil and gas development system.Among all kinds of risers, top tensioning risers can be used in drilling, completion, workover, water injection and production.This paper takes TTRT as an example to analyze and design the riser as a whole.The main elements include:1) using Aqua and Orcaflex software to analyze the motion of the new deep draught semi-submersible platform.The frequency domain characteristic of the platform is analyzed and the coupling motion of the riser between the platform and the mooring system under different sea conditions is calculated. The wave frequency and low frequency time-domain motion data of the platform are obtained as the basis of the subsequent riser analysis.2) using Orcaflex software to analyze the top tension factor of the top tensioning riser and the effect of the top tensioner stiffness on the motion response and force of the tube. The results show that the top tension factor has a significant effect on the motion response and force of the tube.The stiffness of top tensioner has a significant effect on the heave motion of the pipe relative to the platform.Thirdly, the evolutionary strategy algorithm is implemented by using Matlab program to study the layout of riser undersea ports.The calculation results of the self-compiled program are compared with the results of Lingo calculation. The results show that the program can effectively improve the computational efficiency.At the same time, in the case of large number of risers, the method of grouping calculation is proposed, which can significantly reduce the calculation time on the premise of ensuring the effectiveness of the results.Orcaflex software is used to design the top tensioning riser system of the new platform according to API RP2RD.The motion response of riser is calculated and the strength of riser is checked to analyze whether the fatigue damage of riser meets the requirement of working life. At the same time, the interference between risers is analyzed to avoid the collision between risers.
【學(xué)位授予單位】：上海交通大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：P742;P756.2

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