海底环境载荷对控油装置稳定性的影响
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摘要
针对海底载荷对控油装置设计参数及稳定性影响的问题,建立控油装置稳定性力学分析模型。通过极限平衡方程对控油装置入泥深度、海床承载力和抗倾稳定性等进行分析,确定了海土参数、海流速度对控油装置设计参数的影响规律。通过相似性原理设计了控油装置缩比试验模型,并对控油装置模型进行了海底载荷的稳定性模拟试验。试验表明海底载荷对控油装置稳定性影响规律与理论研究相吻合,并分析得到了控油装置稳定工作时的极限倾角及密封压力等关键参数,对控油装置设计及其在复杂海底环境中稳定性研究具有重要的意义。
In order to solve the problem in the influence of submarine environmental loads on design parameters and containment device stability,a containment device stability mechanical analysis model is established,and the driving depth. The driving depth,seabed bearing capacity,and anti-inclining stability of the containment device are analyzed using the limit equilibrium equation,and the influence law of marine soil parameters and current speeds on the design parameters of the containment device are determined. The containment device shrink ratio test model is designed in accordance with the similarity principle to simulate a seabed load stability test for the containment device model. Test results show that the influence law of the submarine load on the stability of the containment device is consistent with that of theoretical research. Key parameters of the ultimate limit angle and sealing pressure are analyzed and obtained when the containment device is working stably,which is extremely significant for designing the containment device and conducting research on stability in a complicated submarine environment.
In order to solve the problem in the influence of submarine environmental loads on design parameters and containment device stability,a containment device stability mechanical analysis model is established,and the driving depth. The driving depth,seabed bearing capacity,and anti-inclining stability of the containment device are analyzed using the limit equilibrium equation,and the influence law of marine soil parameters and current speeds on the design parameters of the containment device are determined. The containment device shrink ratio test model is designed in accordance with the similarity principle to simulate a seabed load stability test for the containment device model. Test results show that the influence law of the submarine load on the stability of the containment device is consistent with that of theoretical research. Key parameters of the ultimate limit angle and sealing pressure are analyzed and obtained when the containment device is working stably,which is extremely significant for designing the containment device and conducting research on stability in a complicated submarine environment.
引文
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[12]American petroleum institute(API).API RP 2SK,Recommended practice for design and analysis of station-keeping systems for floating structures[S].3rd ed.American Petroleum Institute,2005.
[2]魏会东,姜瑛,琚选择,等.深水海管终端设备管线应力计算研究[J].石油机械,2015,43(3):64-67.WEI Huidong,JIANG Ying,JU Xuanze,et al.Calculation of pipe stress for terminal facilities of deep-sea pipelines[J].China petroleum machinery,2015,43(3):64-67.
[3]ZHANG Huaqing,SUN Xiping,WANG Yuanzhan,et al.Dynamic characteristics and simplified numerical methods of an all-vertical-piled wharf in offshore deep water[J].China ocean engineering,2015,29(5):705-718.
[4]苏堪华,管志川,龙芝辉.海底浅部地层性质对深水钻井井口稳定性的影响[J].石油钻采工艺,2012,34(3):7-10,23.SU Kanhua,GUAN Zhichuan,LONG Zhihui.Impact of the seabed soil properties on the stability of subsea wellhead for deepwater drillingv J]Oil drilling&production technology,2012,34(3):7-10,23.
[5]赵明华.土力学与基础工程[M].武汉:武汉理工大学出版社,2003:140-145.ZHAO Minghua.Soil mechanics and foundations[M].Wuhan:Wuhan University of Technology Press,2003:140-145.
[6]HESAR M.Geotechnical design of the Barracuda and Caratinga suction anchors[C]//Offshore Technology Conference.Houston,Texas,2003:1-9.
[7]邹佳星,任慧龙,李陈峰.极端海况下FPSO系泊系统安全性评估与分析[J].哈尔滨工程大学学报,2015,36(1):104-108.ZOU Jiaxing,REN Huilong,LI Chenfeng.The safety assessment and analysis of FPSO mooring system under extreme sea conditions[J].Journal of Harbin Engineering University,2015,36(1):104-108.
[8]王元战,郭富林,刘旭菲,等.格型钢板桩结构抗倾覆稳定性与地基承载力的计算方法[J].港工技术,2013,50(2):32-35,42.WANG Yuanzhan,GUO Fulin,LIU Xufei,et al.Calculation method for stability against overturning and ground bearing capacity of celled steel sheet piles[J].Port engineering technology,2013,50(2):32-35,42.
[9]American petroleum institute(API).API RP 2A-WSD,Recommended practice for planning,designing and constructing fixed offshore platforms-working stress design[S].Washington:American Petroleum Institute Production Department,1996.
[10]王国栋,赵宏林,段梦兰,等.JZ20-2MUQ型导管架平台相似模型设计研究[J].石油矿场机械,2011,40(11):1-5.WAND Guodong,ZHAO Honglin,DUAN Menglan,et al.Research on design for similar model of jz20-2muq jacket platform[J].Oil field equipment,2011,40(11):1-5.
[11]HARRIS H G,SABNIS G M.Structural modeling and experimental techniques[M].Engle-wood Cliffs:Prentice-Hall,1999:30-35.
[12]American petroleum institute(API).API RP 2SK,Recommended practice for design and analysis of station-keeping systems for floating structures[S].3rd ed.American Petroleum Institute,2005.