共查询到19条相似文献,搜索用时 93 毫秒
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<正>世界首座自升式钻井平台诞生于上世纪50年代,从作业水深来看,自升式钻井平台适用于浅海,目前运营中的该类平台最大工作水深达到168m。最大作业水深超过107m的深水自升式钻井平台目前已成为自升式钻井平台市场的主流产品。 相似文献
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自升式钻井平台在我国海洋油气勘探开发中的应用和发展 总被引:5,自引:0,他引:5
自升式钻井平台属于海上移动式平台,由于其定位能力强且作业稳定性好,在大陆架的勘探开发中居主力军地位。通过阐述自升式钻井平台的组成和作业范围,以及在我国海洋油气勘探开发中的应用状况等,对未来自升式平台的发展前景,需解决的关键技术提出了见解,并概括未来新一代自升式钻井平台的主要特点供大家参考。 相似文献
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在搜集整理自升式钻井平台船型资料的基础上,利用逐步同归计算机程序和BP神经网络分别建立了自升式钻井平台主尺度的单变量预测模型和多变量预测模型.经实船验证该模型是适用和可靠的,模型的建立有利于掌握自升式钻井平台主尺度要素变化规律,在进行自升式钻井平台设计初期的技术经济论证和方案设计时,可根据已知信息的多少,选择合适的模型进行主尺度的预测. 相似文献
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自升式钻井平台属于海上移动式平台,是浅海大陆架海域油气资源勘探开发事业的主力装备。结合400英尺自升式钻井平台的性能特点,通过分析钻井平台市场的现状与趋势,论述全球蕴涵油气资源海域的地质特性及勘探远景,归纳国内外钻井平台用户特征及市场需求,总结出最适合该型平台工作的目标海域,明确该型平台最适合的目标用户,使400英尺自升式钻井平台的研发更具市场针对性。 相似文献
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桩靴是钻井平台的重要支撑构件,其结构强度对整个钻井平台的安全起着至关重要的作用。以某自升式钻井平台桩靴为研究对象,根据ABS(美国船级社)规范要求,建立桩靴结构强度的力学模型,并合理简化,分析了预压载和自存两种工况下的设计载荷。利用有限元软件MSC.Patran/Nastran对两种工况下桩靴的强度进行分析,研究得到桩靴强度工程化分析流程以及结构强度特性,分析结果为自升式钻井平台的桩靴设计提供参考。 相似文献
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自升式钻井平台属于典型的柔性结构。由于冰与柔性抗冰结构相互作用的复杂性,长期以来尚未形成基于动冰力响应分析的结构设计。结构抗冰设计中大都是从极端荷载出发,只考虑最大静冰力或最大倾覆力矩是否能推倒平台。基于对渤海辽东湾柔性抗冰平台的多年监测,发现强烈的冰激振动引起平台管节点疲劳失效、上部设施的非正常运行、作业人员不舒适等问题的风险性要远大于极端静冰荷载下结构的整体安全问题。文中基于多年现场冰与结构作用观测及冰荷载的研究成果,提出了柔性抗冰结构设计中应考虑的主要失效模式及评价方法。最后,以渤海某典型自升式钻井平台为例,对其抗冰性能进行评价。该文的研究可为寒区自升式平台的抗冰概念设计提供合理依据。 相似文献
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The jack-up unit is one of the best drilling platforms in offshore oil fields with water depth shallower than 150 meters.As the most pivotal component of the jack-up unit,the leg system can directly affect the global performance of a jack-up unit.Investigation shows that there are three kinds of leg structure forms in the world now:the reverse K,X,and mixing types.In order to clarify the advantage and defects of each one,as well as their effect on the global performance of the jack-up unit,this paper commenced to study performance targets of a deepwater jack-up unit with different leg systems(X type,reverse K type,and mixing type).In this paper a typical leg scantling dimension and identical external loads were selected,detailed finite element snalysis(FEA) models were built to simulate the jack-up unit’s structural behavior,and the multi-point constraint(MPC) element together with the spring element was used to deal with the boundary condition.Finally,the above problems were solved by comparative analysis of their main performance targets(including ultimate static strength,dynamic response,and weight). 相似文献
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Punch-through failure of jack-up spudcan foundations occurs in active oil and gas drilling exploration regions, where relatively stiff soil overlies soft marine layer. Therefore, installation of spudcan foundations in such seabed formations threatens the stability of the jack-up rig. A site-specific assessment of the potential and severity of failure must be completed before the commencement of the installation. However, the accuracy of the prediction is limited by the validity of the design method currently in use. This paper presents advances in the prediction of punch-through failure of jack-up platforms in sand/stiff clay over soft clay soils. New analytical models for spudcan installation in double-layered soils are reviewed and compared to the existing methods in the ISO 19905-1 standard and SNAME standard. The capabilities and limitations of each method are summarised and recommendations are drawn for the theoretical predictions of spudcan punch-through in double-layered soils. 相似文献
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