基于p-y曲线法的受水平载荷水下井口水平度研究
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摘要
为保证水下井口水平度,并确定其在深水中不产生较大倾斜以避免对井口设备造成损伤,将对水下井口系统起固定作用的表层导管及注水泥环视为单桩体,基于桩基设计规范及海洋石油工程相关API标准对所设计模型进行了校核。根据土体相关特性选择非线性地基反力法p-y曲线法,对井口受波流水平载荷的响应采用非线性弹簧模型进行有限元模拟,并将结果导入基盘防沉垫模型中进行有限元分析,得到水下井口水平度为0. 45°,满足海洋油气工程中对水下井口水平度不超过0. 5°的要求。研究结果对于水下井口的现场应用具有一定的指导作用。
To ensure the levelness of the subsea wellhead and make sure that it does not produce large inclination in deep water to avoid damage to the wellhead equipment,the surface conductor and cementing sheath that fix the subsea wellhead system are treated as a single pile,and the designed model is checked based on the design specifications of the pile base and the API standards related to offshore oil engineering. According to the soil-related characteristics,the nonlinear foundation reaction method p-y curve method is selected. The response of the wellhead to the lateral load of the wave current is simulated by the nonlinear spring model,and the result is imported into the mud mat model of the template for finite element analysis. The wellhead levelness response obtained could meet the requirements of the offshore oil and gas project,i. e. the levelness of the subsea wellhead not exceeding 0. 5°.
To ensure the levelness of the subsea wellhead and make sure that it does not produce large inclination in deep water to avoid damage to the wellhead equipment,the surface conductor and cementing sheath that fix the subsea wellhead system are treated as a single pile,and the designed model is checked based on the design specifications of the pile base and the API standards related to offshore oil engineering. According to the soil-related characteristics,the nonlinear foundation reaction method p-y curve method is selected. The response of the wellhead to the lateral load of the wave current is simulated by the nonlinear spring model,and the result is imported into the mud mat model of the template for finite element analysis. The wellhead levelness response obtained could meet the requirements of the offshore oil and gas project,i. e. the levelness of the subsea wellhead not exceeding 0. 5°.
引文
[1]方华灿.海洋石油工程[M].北京:石油工业出版社,2010.FANG H C.Offshore engineering of petroleum and gas[M].Beijing:Petroleum Industry Press,2010.
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[5]KIM Y,JEONG S.Analysis of soil resistance on laterally loaded piles based on 3D soil-pile interaction[J].Computers&Geotechnics,2011,38(2):248-257.
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[13]尹杰,黎相森,罗慧明,等.基于p-y曲线法的单桩水平承载力计算[J].广东造船,2016,35(1):34-36.YIN J,LI X S,LUO H M,et al.The lateral bearing load of monopole based on p-y curves method[J].Guangdong Shipbuilding,2016,35(1):34-36.
[14]杨进.ANSYS在海洋石油工程中的应用[M].北京:石油工业出版社,2010.YANG J.The application of ANSYS in offshore engineering of petroleum[M].Beijing:Petroleum Industry Press,2010.
[2]MATLOCK H S.Correlation for design of laterally loaded pile in soft clay[C]∥Proceedings of 2nd Offshore Technology Conference.Houston:[s.n.],1970.
[3]苏堪华.深水钻井井口力学分析及导管承载能力研究[D].青岛:中国石油大学,2009.SU K H.The research on subsea wellhead and casing bearing force in deep water[D].Qingdao:China University of Petroleum,2009.
[4]苏堪华,管志川,魏路,等.深水水上防喷器钻井系统水下井口稳定性分析[J].中国海上油气,2009,21(3):180-185.SU K H,GUAN Z C,WEI L,et al.Stability analysis of subsea wellhead of surface blowout preventer system in deep water[J].China Offshore Oil and Gas,2009,21(3):180-185.
[5]KIM Y,JEONG S.Analysis of soil resistance on laterally loaded piles based on 3D soil-pile interaction[J].Computers&Geotechnics,2011,38(2):248-257.
[6]HASSAN A M.Winkler model for pile seismic analysis considering end constraints effects[J].Hbrc Journal,2017.
[7]赵苏文,黄小龙,熊爱江,等.水下释放塞注水泥工艺关键技术[J].石油钻探技术,2015,43(6):54-58.ZHAO S W,HUANG X L,XIONG A J,et al.Subsea key technology of cementing[J].Petroleum Drilling Technology,2015,43(6):54-58.
[8]周宏,罗萍萍,周锋.南海海域地质参数变化对地基承载力的影响及穿刺评估[J].船舶工程,2015(12):98-102.ZHOU H,LUO P P,ZHOU F.Effect of changing geological parameters in South China Sea on the bearing capacity of foundations and puncture assessment[J].Ship Engineering,2015(12):98-102.
[9]API.Design and operation of subsea production system---subsea wellhead and tree equipment:ANSI/API Spec 17D[S].Washington:API Publishing Services,2011
[10]桩基工程手册编写委员会.桩基工程手册[M].北京:中国建筑工业出版社,1995.Writing Committee of the Manual.Pile engineering manual[M].Beijing:Architecture&Building Press,1995.
[11]中华人民共和国住房和城乡建设部.建筑地基基础设计规范:GB 50007-2011[S].北京:中国建筑工业出版社,2011.Ministry of Housing and Urban-Rural Development of the People's Republic of China.Code for design of building foundation:GB 50007-2011[S].Beijing:Architecture&Building Press,2011.
[12]中国船级社.海上移动平台入级与建造规范[S].北京:人民交通出版社,2005.China Classification Society.Classification and construction specification of mobil offshore platform[S].Beijing:China Communication Press,2005.
[13]尹杰,黎相森,罗慧明,等.基于p-y曲线法的单桩水平承载力计算[J].广东造船,2016,35(1):34-36.YIN J,LI X S,LUO H M,et al.The lateral bearing load of monopole based on p-y curves method[J].Guangdong Shipbuilding,2016,35(1):34-36.
[14]杨进.ANSYS在海洋石油工程中的应用[M].北京:石油工业出版社,2010.YANG J.The application of ANSYS in offshore engineering of petroleum[M].Beijing:Petroleum Industry Press,2010.