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casing shear
相关语句
  套管剪切
     1. Through investigation and analysis,that the change of construction of reservoir compaction and the creep and gliding of mudrock layer are the main reasons of casing shear failure is studied.
     1.通过分析和调研,认识到油藏结构变化和泥岩层蠕变滑动是引起套管剪切损坏的基本原因。
短句来源
     Using theory of fracture mechanics and through theoretic analysis and calculation,the distribution of strains and stresses is given,which illustrates in reason the mechanical mechanism of casing shear failure.
     应用断裂力学理论,通过理论分析和计算,给出应力和应变场的分布,定量地合理地阐明了套管剪切损坏力学机理。
短句来源
     Theoretical analysis and calculations show that the creep power_hardening index n notably influences the interface crack_tip field and illustrates the mechanism of casing shear failure.
     理论分析和计算指出材料的幂硬化指数n对界面裂纹尖端应力场有着显著的影响并定量地合理地阐明了套管剪切损坏力学机理.
短句来源
     Research on the Constitutive Equation of Mud-Rock and the Mechanism of Casing Shear Failure
     泥岩的本构方程及油水井套管剪切破坏机理的研究
短句来源
     Proper well location or inclination,underreaming,special completions approaches,reservoir management,and other methods can reduce the frequency or rate of casing shear.
     合理选择井位、井斜角、管下划眼、特殊完井工艺、油藏管理和其他手段可减少套管剪切破坏发生频率或速度
短句来源
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  “casing shear”译为未确定词的双语例句
     Based on the measurement results, the generation, evolution, unsteadiness and breakdown of the tip leakage vortex are analyzed in detail in the paper, and four main factors on the instability of the tip leakage vortex (adverse pressure gradient, Coriolis force, casing shear flow and turbulence intensity) are also discussed.
     基于瞬态场测量结果,详细阐述了设计状态下压气机转子叶尖泄漏涡产生、发展、失稳、破碎的演化过程,导致叶尖泄漏涡失稳的4种主要因素:主流的逆压梯度、哥氏力、端壁的剪切流动和来流湍流度的影响,分析了压气机内泄漏涡的失稳破碎机制,以及泄漏涡与主流的相互作用等。
短句来源
     The mechanical mechanism of casing shear failure and theory of constitutive equation of rock-soil mechanics are summarized,which is foundation of research in this dissertation.
     全面地总结油水井套管损坏机理和岩土力学中的本构方程理论,为本文的工作奠定了基础。
短句来源
  相似匹配句对
     CAUSES ANALYSIS AND PREVENTIVE MEASURES OF CASING SHEAR
     套管剪切破坏原因分析及防治技术
短句来源
     The results indicated that model casing was destroyed by shear stress.
     试验结果表明,该模型机匣的非包容失效模式主要是剪切破坏。
短句来源
     Shear flocculation
     剪切絮凝
短句来源
     THE INFLUENCE OF THE CASING ON EFP
     外壳对爆炸成型弹丸(EFP)的影响
短句来源
     FAILURE ANALYSIS FOR THE CASING
     套管的失效分析
短句来源
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SPIV is applied to a large-scale low-speed compressor facility. The instantaneous velocity and vorticity distributions in several cross sections are successfully measured in the tip region of the compressor rotor at design condition. Based on the measurement results, the generation, evolution, unsteadiness and breakdown of the tip leakage vortex are analyzed in detail in the paper, and four main factors on the instability of the tip leakage vortex (adverse pressure gradient, Coriolis force, casing shear...

SPIV is applied to a large-scale low-speed compressor facility. The instantaneous velocity and vorticity distributions in several cross sections are successfully measured in the tip region of the compressor rotor at design condition. Based on the measurement results, the generation, evolution, unsteadiness and breakdown of the tip leakage vortex are analyzed in detail in the paper, and four main factors on the instability of the tip leakage vortex (adverse pressure gradient, Coriolis force, casing shear flow and turbulence intensity) are also discussed.

在低速大尺寸单级压气机实验台上,利用SPIV技术测量了设计状态下压气机转子尖区多个截面的三维瞬态速度场。基于瞬态场测量结果,详细阐述了设计状态下压气机转子叶尖泄漏涡产生、发展、失稳、破碎的演化过程,导致叶尖泄漏涡失稳的4种主要因素:主流的逆压梯度、哥氏力、端壁的剪切流动和来流湍流度的影响,分析了压气机内泄漏涡的失稳破碎机制,以及泄漏涡与主流的相互作用等。

Casing impairment leads to loss of pressure integrity,pinching of production tubing,even an inability to lower workover tools.Usually,bedding plane slip of rock statum results in casing impairment.Rock volume change may arise from pressure changes,temperature changes,or solids movement during production or injection operation.Volume change generates stress concentrations.Dominant casing-deformation mechanism are localized horizontal shear in weak lithologic interfaces within the overburden.Mitigating casing...

Casing impairment leads to loss of pressure integrity,pinching of production tubing,even an inability to lower workover tools.Usually,bedding plane slip of rock statum results in casing impairment.Rock volume change may arise from pressure changes,temperature changes,or solids movement during production or injection operation.Volume change generates stress concentrations.Dominant casing-deformation mechanism are localized horizontal shear in weak lithologic interfaces within the overburden.Mitigating casing damage usually means reducing the amount of shear slip.Proper well location or inclination,underreaming,special completions approaches,reservoir management,and other methods can reduce the frequency or rate of casing shear.

套管损坏会导致压力完整性破坏、生产油管磨损 ,甚至无法下入修井工具。岩层沿层面或倾角较大的断层面滑移将导致套管剪切损坏 ,注采过程中压力、温度的变化或注采过程中固体颗粒运移都可使岩石体积发生变化 ,体积变化产生的应力集中可引起岩层滑移。套管变形的主要机理为上履岩层中松软岩性层面处易发生局部水平剪切。减轻套管损坏就是缩小剪切滑移量。合理选择井位、井斜角、管下划眼、特殊完井工艺、油藏管理和其他手段可减少套管剪切破坏发生频率或速度

The study of well casings failures is important in oil engineering.The main reasons for casing failure are the change of construction of reservoir compaction in oil-extraction, which leads to the change of the crust stress fields, and the relative gliding of the interface between different rock layers. Here,an idealized interface fracture model was established in which the reservoir hunch as an elastic wedge was embedded in nonlinear viscoelastic material. Under condition of plane strain,through analysis of...

The study of well casings failures is important in oil engineering.The main reasons for casing failure are the change of construction of reservoir compaction in oil-extraction, which leads to the change of the crust stress fields, and the relative gliding of the interface between different rock layers. Here,an idealized interface fracture model was established in which the reservoir hunch as an elastic wedge was embedded in nonlinear viscoelastic material. Under condition of plane strain,through analysis of the singularity of the stress and strain and combining the movement and compatibility equations, the governing equation in the nonlinear viscoelastic material of the near tip of the elastic wedge was deduced. Through numerical calculations and with boundary conditions and continuous conditions, the asymptotic solution of the fully continuous separate variable formal of stress, strain and displacement of the near tip of the elastic wedge was obtained.Numerical results show that the field distribution is mainly influenced by the mechanic characteristics for materials, the angle of inclination and the coefficient of friction. The mode illustrates reasons for the mechanical mechanism of casing shear failure and the research results can serve as reference for solving casing failure in oil fields.

套管损坏是石油工程研究中的重要问题之一,引起套管损坏发生的主要原因是在采油过程中油藏结构变化改变了原地应力场的分布以及不同岩层间界面的相对滑动.建立了以油藏隆起为尖楔嵌入非线性黏弹性材料的界面断裂力学模型.在平面应变条件下,通过奇异量级分析、运动方程和协调方程,推导出在尖楔尖端的非线性黏弹性材料中的控制方程.根据问题的边界条件和连续条件,通过数值计算得到了尖楔尖端连续的分离变量形式的应力、应变和位移场.数值计算表明,尖楔尖端场分布主要受材料的力学特性、地层倾角和摩擦系数的影响.模型阐明了套管剪切损坏力学机理,研究的结果为解决套管损坏问题提供了理论上的参考依据.

 
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