新型深水干樹半潛平臺關(guān)鍵技術(shù)研究

羅勇 齊曉亮 高巍 何寧 郝雙戶

摘 要：總體介紹了課題研究背景和研究思路，圍繞2013年工作任務(wù)，總結(jié)了取得的技術(shù)進(jìn)步，包括平臺的概念設(shè)計、整體運動分析、立管設(shè)計等 新型的干樹半潛浮式生產(chǎn)平臺其創(chuàng)新點是把平臺的立柱和甲板分開，從而使平臺的主要尺度能夠根據(jù)穩(wěn)性和運動的優(yōu)化要求進(jìn)行獨立選型。針對干樹生產(chǎn)平臺的技術(shù)要求，圍繞穩(wěn)性、控制垂蕩運動及橫、縱搖運動特性，對平臺主尺度進(jìn)行了優(yōu)選，使其具有良好的穩(wěn)性，同時又保證其垂向運動的固有頻率高于波浪能量頻率，并且使波浪力在波浪能量周期內(nèi)有相對的抵消。

關(guān)鍵詞：干樹半潛平臺 主尺度選型 穩(wěn)性 垂蕩控制 整體運動性能 系泊設(shè)計

Abstract： In this report， the research background and research ideas were introduced. The actual research work were carried out around the 2013 work plan：including the global sizing， global performance and the TTR riser design. The concept is based on an innovative solution of separating columns and deck of the semi-submersible platform， so that the key dimensions of the platform can be independently tuned to maintain good stability and desired natural frequencies of the platform in vertical motion. The platform configuration is carefully selected so that its natural frequencies in vertical motion are well above wave energy frequency and wave force cancelation effect is fully utilized in the period of large wave energy. In this way， satisfactory motions can be achieved. Stability of the new platform is analyzed and the results indicate that the stability meets the design code and safety requirements.

Key Words： Dry tree semi-submersible； Main dimension Selection； Stability； Heave Motion； Global Motion performance； Mooring

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