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1.
ZHAO Junyou GUO Aiju DING Keqin LIU Chuntu
Lecturer Petroleum University of China Shangdong P. R. China.
Engineer Zhongyuan Petrochemical Corporation Henan P. R. China.
Postdoctoral Fellow 《中国海洋工程》1999,(1)
-This paper carries out the analysis of mechanics of a grip system of three-key-board hydraulictongs developed for offshore oil pipe lines which has been successfully used in oil fields in China.The mainimprovement of this system is that a lever frame structure is used in the structural design,which reducesgreatly the stresses of the major components of the oil pipe tongs.Theoretical analysis and numerical calcu-lation based on thirteen basic equations developed show that the teeth board of the tongs is not easy to slipas frequently happens to other systems and is of higher reliability. 相似文献
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埕岛油田海底管道安装应力计算方法的研究及应用 总被引：1，自引：0，他引：1
海底管道的施工质量直接关系到海底管道能否长久地安全运行。对施工期间各种环境荷载、施工荷载作用下的海底管道在力和变形进行计算,分析和监控、是确保底管道施工质量的不可缺少的重要手段。本文通过计算实例对浮拖法敷设海底管道安装计算分析的方法作了研究,并对胜利海洋石油开发公司与天津大学合作研究开发的涨底管道安装分析软件在胜利岛油田海底管道工程建设中的应用作了介绍。 相似文献
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Offshore jacket platform is widely used as production or oil recovering platform in the shallow sea, and is also applied to the offshore wind turbine supporting structure in the recent years. The jacket structures are normally designed to be conservative and bulky according to various design codes. In this work, a structural optimization design method for jacket platform structure has been developed based on topology optimization theory. The topology optimization method is applicable at an early design stage, which can determine the initial structure and force transmission path. The whole design space is chosen as design variables, and the goal is to maximize the structural stiffness. A set of constraints based on multi-criteria design assessment is applied according to standard requirements, which includes stress, deformation, vibration and design variable constraints. The optimization results are compared with the original platform for static performance, dynamic performance and Ultimate Carrying Capacity (UCC). Results show that the optimized structure show a 13.7% reduction in the global mass, 46.31% reduction in the maximum equivalent stress, and large ultimate carrying capacity ability under the same environmental loads. It is demonstrated that the proposed topology optimization method is capable of effectively determining the optimal design of jacket platform structures. 相似文献
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The floating oil storage system has been proposed as a new facility for Strategic Petroleum Reserve (SPR) in China. Mooring is one of the key technologies to ensure the safety, reliability, and performance of the oil storage system. This paper describes the concept, analysis, design and reliability of the mooring system. For mooring system design of these oil vessels, analysis is essential of the behavior of the vessel in connection with mooring facilities of nonlinear resilience. A nonlinear mathematical model for analyzing a moored vessel is established and solved. Some results of numerical simulations are presented. Assessment of the safety regarding the mooring system in terms of failure probability is carried out. Another simulation model for calculating the failure probability of the mooring system is proposed. The design parameters that have an influence on the characteristics of the failure probability have been identified. The simulation results show that the mooring system has an annual reliab 相似文献
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东海边际油气田类型主要有低渗透气田、复杂断块气田、微构造气田和高凝原油油气田等.在分析东海边际油气田开发特点和难点的基础上,按照区域整合、统筹兼顾的原则,提出了坚持勘探开发一体化,建立低渗开发先导试验区,打造区域设施中心、组建区域管网、电网,简化平台功能实现标准化设计,依托已建/拟建平台滚动扩边,论证FPSO方案作为原油外输第二出路的边际油气田开发策略,力求突破边际油气田开发壁垒,实现边际油气田低成本高效开发.其开发经验和策略对其它海域类似边际油气田高效开发具有一定的借鉴意义. 相似文献
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常规的油气化探方法一般是应用烷烃类作为油气勘探的基本指标,但是烷烃类易受人类活动和生物活动的干扰,使常规的化探技术在油气勘探中一直受到限制。人们开始考虑采用直接的生物标记化合物来预测油气藏,如芳烃系列中的苯系化合物苯(benzene)、甲苯(toluene)、乙苯(ethylbenzene)、二甲苯(xylem),简称BTEX。国内外研究表明,BTEX基本不受人类活动和生物活动的干扰,对油气藏具有良好的指示作用。依据南海某区的实测资料,采用自主研发的油气化探可视化评价软件进行数据处理,剥离背景异常,圈出有效的BTEX异常,并与靶区地层剖面进行了对比,结果证实了BTEX对海域油气藏具有良好的指示作用。 相似文献
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Sea area is an important area of oil and gas exploration in China. It has been found that China’s sea area mainly consists of coal type oil and gas, and the exploration of coal-bearing series source rocks has become an important part of oil and gas exploration there. Through years of comprehensive geological research in China’s sea area, it has been revealed that it has undergone multiple occurrences of tectonic opening and closing movements in varying degrees in the Paleogene, forming 26 Cenozoic sedimentary basins of various types, such as active continental margin, passive continental margin, transitional continental margin and drift rift basins. In the present study, it is observed for the first time that coal type source rocks are mainly developed in 14 continental margin basins in China’s sea area, revealing that a very large C-shaped coal-bearing basin group developed there in the Cenozoic. Next, based on the coupling analysis of paleoclimate, paleobotany, paleogeography and paleostructure, it is observed that there are five coal-forming periods in China’s sea area, namely the Paleocene, Eocene, early Oligocene, late Oligocene and Miocene-Pliocene, and the coal-forming age is gradually new from north to south. It is also found that the coal seams in the sea area are mainly developed in three coal-forming environments in Cenozoic, namely delta, fan delta and tidal flat-lagoon. The coal seams developed in different environments are characterized by thin thickness, many layers and poor stability. However, the coal-bearing series source rocks in China’s sea area have a wide distribution range, very high thickness and large amount, thus forming a material basis for the formation of rich coal type oil and gas. 相似文献
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微藻对油污染物的不同响应,势必造成其群落种类组成和结构的变化,进一步影响海洋生态系统的变迁。由于油污染对于浮游植物的影响具有污染源及生物响应的多样性、多维度性和复杂性,产生影响的时效长但可显示度低等特点,造成该研究领域的极大限制。作者以石油标准品20-3和3种石油化学品(双酚、对苯二甲酸、对二甲苯)作为油污染源,利用多孔板高通量检测方法及大数据处理分析软件Simca-P,对中国沿海常见单种微型藻类的种群消长受油污染影响进行了研究。以石油标准品20-3为油污染源,分析了31株微藻增殖对不同油标浓度的不同响应;利用Simca-P软件对3种不同浓度的石油化学品对4种典型微藻(柔弱角刺藻(Chaetoceros debilis)、球等鞭金藻(Isochrysis galbana)、东海原甲藻(Prorocentrum donghaiense)、剧毒卡罗藻(Karlodinum veneficum))增殖的影响进行了比较分析。研究结果显示:不同种类微藻因油污种类及其浓度不同,其响应存在显著差异。利用多孔板以及微藻的吸光特征,可以高通量快速筛查不同微藻对不同油污及其不同浓度的响应差异,并利用计算机软件对大数据的分析能力,挖掘和比较不同微藻与不同油污之间的相互关系,从而就油污染对微藻影响这种多维度复杂关系进行研究。 相似文献
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预应力钢筒混凝土管(PCCP)是一种优质复合管材,已经应用于海底输油等领域。由于PCCP中含有混凝土、钢筒、预应力钢丝,结点构造和地下埋置工况复杂,对于PCCP的受力机理认识尚不统一。根据环形预应力作用机理,结合多层圆筒轴对称平面形变理论,研究建立了单层预应力作用下埋置式PCCP受力模型,并根据PCCP使用阶段抗裂要求,分析提出使用阶段PCCP预应力计算公式。采用数值分析法,以内压力等为变量,研究使用阶段不同内压力作用下PCCP的应力变化。分析结果与提出模型进行对比,建议预应力计算公式乘以增大系数1.2。预应力计算结果与国内外规范比较说明公式是合理的。 相似文献
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在辽河盆地中，海月潜山是一个典型的、由下古生界碳酸盐岩组成的规模较大的潜山。通过对海月潜山的地层、构造和构造应力场等分析，得出潜山西北边缘有一个裂缝发育带和潜山内4个较强的张应力区和张扭应力区，正好与4个构造圈闭吻合，它们是油气储集区．并发现潜山顶部局部保留有残留古风化壳，风化壳中网状裂缝是重要的油气储集空间。这些表明海月潜山是一个具有勘探潜力和油气远景的潜山区，它是我国东部中、新生代含油气盆地之下潜山油气藏勘探的一个很好范例。 相似文献
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The new simple design equations for predicting the ultimate compressive strength of stiffened plates with initial imperfections in the form of welding-induced residual stresses and geometric deflections were developed in this study. A non-linear finite element method was used to investigate on 60 ANSYS elastic–plastic buckling analyses of a wide range of typical ship panel geometries. Reduction factors of the ultimate strength are produced from the results of 60 ANSYS inelastic finite element analyses. The proposed design equations have been developed based on these reduction factors. For the real ship structural stiffened plates, the most general loading case is a combination of longitudinal stress, transverse stress, shear stress and lateral pressure. The new simplified analytical method was generalized to deal with such combined load cases. The accuracy of the proposed equations was validated by the experimental results. Comparisons show that the adopted method has sufficient accuracy for practical applications in ship design. 相似文献
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V. A. Moiseyev V. P. Nazarov V. Y. Zhuravlev D. A. Zhuykov M. V. Kubrikov Y. N. Klokotov 《Izvestiya Atmospheric and Oceanic Physics》2016,52(7):753-759
The development of new technological equipment for the implementation of highly effective methods of recovering highly viscous oil from deep reservoirs is an important scientific and technical challenge. Thermal recovery methods are promising approaches to solving the problem. It is necessary to carry out theoretical and experimental research aimed at developing oil-well tubing (OWT) with composite heatinsulating coatings on the basis of basalt and glass fibers. We used the method of finite element analysis in Nastran software, which implements complex scientific and engineering calculations, including the calculation of the stress-strain state of mechanical systems, the solution of problems of heat transfer, the study of nonlinear static, the dynamic transient analysis of frequency characteristics, etc. As a result, we obtained a mathematical model of thermal conductivity which describes the steady-state temperature and changes in the fibrous highly porous material with the heat loss by Stefan–Boltzmann’s radiation. It has been performed for the first time using the method of computer modeling in Nastran software environments. The results give grounds for further implementation of the real design of the OWT when implementing thermal methods for increasing the rates of oil production and mitigating environmental impacts. 相似文献
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海洋导管架平台的极限强度分析 总被引：5，自引：1，他引：5
海洋导管架平台的极限分析是一项较新的研究课题，随着海上采油事业的飞速发展，它已越来越受到海洋工程设计及维修部门的重视。其研究成果不仅能用于设计结构的应力校核，尚可用于现有平台结构的整体安全估算。本文利用非线性模拟技术及线性分析程序的完美结合。成功地分析计算了受集中哉茶作用的空间框架结构，及受静载荷和环境载荷作用下的真实导管架平台极限强度。 相似文献
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- The ultimate strength analysis of offshore jacket platforms is a research project which has been developed in recent years. With the rapid development of marine oil industry, the departments of design and IMR (Inspection, Maintenance and Repair) in the offshore engineering have attached great importance to this project. The research procedure applies to both the stress check of new design platforms and the whole safety assessment of existing platforms. In this paper, we combine the pseudo non-linear technique with the linear analysis program and successfully analyze the ultimate strength of the space frame structure subject to the concentrated load and a real jacket platform subject to the dead load and environmental load. 相似文献
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针对深海运载器海底岩芯原位取样作业需求,对基于水下运载器的深海原位取芯钻机在深海低温、高压、底层流速多变等特点条件下的作业机理及受力进行分析,并选取硬质合金钻头和PDC钻头进行了取芯钻头的轴向力、切向力和切削功率的数学力学对比计算,确定了单环四齿周向均布的金刚石复合片(PDC)钻头设计方案。在理论分析基础上,针对深海钴结壳设计了台架试验,开展钻进试验研究。通过理论计算和实验研究,探寻了一种基于深海运载器的钴结壳小型钻机设计方法,确定了钻机功率、转速、钻进正向压力和取芯率等基本参数选取范围,对开展海底岩芯原位取样作业具有重要的指导意义。 相似文献
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深海采矿作为新领域资源重点开发项目,国外已开展部分试验研究,国内现阶段仅停留在重点设备部件级功能验证,还未开展过系统整体联动,距离海洋油气等正在进行的规模化商业开采还有很大距离。本文以深海采矿系统整体联动模型为基础,与海洋油气工程作业平台技术模型进行对比,对整体联动风险点进行深度分析,并根据重点风险部件开展其悬挂模式、力学模型研究,探讨深海采矿系统整体联动时应急撤离的策略。研究总结了深海采矿系统整体联动的特点,提出了管道摇摆幅度超出设计范围、平台升沉行程超出伸缩冲程范围等两大关键风险点、提升硬管受力分析方法和对应的应急撤离方案,对深海采矿工程总体设计和工程实施具有指导意义和参考价值。 相似文献
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Strength design method for tubing hanger of subsea christmas tree against big temperature difference
The tubing hanger is an important component of the subsea Christmas tree, experiencing big temperature difference which will lead to very high thermal stresses. On the basis of API 17D/ISO 13628-4 and ASME VIII-1, and by comprehensively considering the erosion of oil and the gravity load of the tubing, a calculation model is established by regarding design pressure and thermal stress, and the method for designing the tubing hanger of the horizontal Christmas tree under big temperature difference condition is developed from the fourth strength theory. The proposed theory for strength design of the tubing hanger in big temperature difference is verified by numerical results from ABAQUS. 相似文献