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casing protecting
相关语句
  套管保护
     Results show that the working potential of anodes is lower than -0.93 volts (Cu/CuSO_4), and the casing protecting potential is lower than -0.85 volts (Cu/CuSO_4). The test results indicate that all of the potentials are steady, the anodes work normally, and the protective system works properly and smoothly.
     试验结果表明 ,阳极工作电位都小于 -0 .93V ,套管保护电位都小于 -0 .85V(Cu/CuSO4 参比电极 ) ,阳极工作正常 ,电位稳定 ,分布均匀 ,整个保护系统处于良好的工作状态 .
短句来源
     101.6mm(?104.8mm)casing,high-pressure flooding casing,protecting drilling strings,downhole anchoring tool with a low injury,well situation monitoring,casing anticorrosion,?
     101.6mm(!104.8mm)套管、高压注水套管保护工艺管柱、低伤害井下锚定工具、井下井况监测、井筒套管防腐、!
短句来源
     Through the contact test of underground reference electrode, we have tested the natural potential, casing protecting potential, the anode working potential, and the anode open circuit potential.
     根据地下参比电极接触测试原理 ,测试了套管被保护前后纵向深度上的套管自然电位、套管保护电位、阳极工作电位和阳极开路电位 .
短句来源
  “casing protecting”译为未确定词的双语例句
     Both the derrick deviation and the wellhead's eccentricity will cause the serious wearing of the casing (or casing protecting tube) close to the wellhead.
     井架不正或井口偏心,会造成近井口套管(或套管防磨套)的磨损。
短句来源
  相似匹配句对
     ON PROTECTING CMOS
     试谈CMOS信息的保护
短句来源
     Striking and Protecting
     正确处理打击与保护的辩证关系开创刑侦工作的新局面
短句来源
     (3) measures for protecting the casing and cement mantle and cables were put forward.
     (3)制定了保护套管、水泥环和电缆的措施。
短句来源
     Analysis and discuss on the force applied on protecting pipe for well casing under high pressure
     高压注水井套管保护管柱受力分析探讨
短句来源
     FAILURE ANALYSIS FOR THE CASING
     套管的失效分析
短句来源
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Through the contact test of underground reference electrode, we have tested the natural potential, casing protecting potential, the anode working potential, and the anode open circuit potential. Results show that the working potential of anodes is lower than -0.93 volts (Cu/CuSO_4), and the casing protecting potential is lower than -0.85 volts (Cu/CuSO_4). The test results indicate that all of the potentials are steady, the anodes work normally, and the protective system works properly and smoothly....

Through the contact test of underground reference electrode, we have tested the natural potential, casing protecting potential, the anode working potential, and the anode open circuit potential. Results show that the working potential of anodes is lower than -0.93 volts (Cu/CuSO_4), and the casing protecting potential is lower than -0.85 volts (Cu/CuSO_4). The test results indicate that all of the potentials are steady, the anodes work normally, and the protective system works properly and smoothly.

根据地下参比电极接触测试原理 ,测试了套管被保护前后纵向深度上的套管自然电位、套管保护电位、阳极工作电位和阳极开路电位 .试验结果表明 ,阳极工作电位都小于 -0 .93V ,套管保护电位都小于 -0 .85V(Cu/CuSO4 参比电极 ) ,阳极工作正常 ,电位稳定 ,分布均匀 ,整个保护系统处于良好的工作状态 .

Casing damage of steam injection wells is widespread in many oil fields of China.A numerical simulation method based on finite element theory is used to simulate casing stress under the earth stress and temperature load to study the mechanism of the casing damage.A two-step computing method is put forward.The first step provides the temperature and earth stress near the casting using the coarse-mesh finite element model;the second computation provides more accurate results using the fine-mesh...

Casing damage of steam injection wells is widespread in many oil fields of China.A numerical simulation method based on finite element theory is used to simulate casing stress under the earth stress and temperature load to study the mechanism of the casing damage.A two-step computing method is put forward.The first step provides the temperature and earth stress near the casting using the coarse-mesh finite element model;the second computation provides more accurate results using the fine-mesh finite element model.The simulation shows that casing slotting results in sharp stress concentration and the maximum Von Mises stress increases by 30%–50%.The simulation also shows that injecting temperature can greatly influence the stress field.For example,the maximum Von Mises stress increases by 26.5% when the injecting temperature is 200 ℃.The research results are very helpful to the casing protect in oil field by selecting suitable injecting temperature.

注汽井射孔套管损坏问题在我国许多油田十分普遍,为此进行了地应力和温度载荷耦合作用下套管的应力变化规律以及对套管损坏影响的研究。提出了一种二阶段的计算策略,首先采用粗网格获得套管附件的地应力和温度,然后缩小模型范围,采用细密网格获得更精确的结果。最终计算结果表明,射孔导致套管的应力集中比较明显,最大Von Mises应力可能增加1.3~1.5倍;温度载荷对套管应力有重要的影响,200℃注汽时温度效应使得最大Von Mises应力增大26.5%。研究结果为油田现场确定合理的注汽温度,预防和减少套管损坏提供了理论依据。

Both the derrick deviation and the wellhead's eccentricity will cause the serious wearing of the casing (or casing protecting tube) close to the wellhead. Based on the dynamics, a mechanical model calculating the drill string's eccentric wear is established, the approximation equation calculating the positive pressure on casing/drill string is derived out, and the major factors affecting the eccentric wear are analyzed. The calculation results demonstrate the effective eccentricity and the lifting...

Both the derrick deviation and the wellhead's eccentricity will cause the serious wearing of the casing (or casing protecting tube) close to the wellhead. Based on the dynamics, a mechanical model calculating the drill string's eccentric wear is established, the approximation equation calculating the positive pressure on casing/drill string is derived out, and the major factors affecting the eccentric wear are analyzed. The calculation results demonstrate the effective eccentricity and the lifting force of the upper drill string are the major influential factors. The bigger the effective eccentricity, the higher the upper drill string s lifting force, the higher the positive pressure on casing/drill string, and the more serious the wear. Since the deeper the well, the higher the lifting force at the upper drill string, the deviation of derrick and the well head's eccentricity should be avoided by all means to prevent the severe eccentric wear on the casing which is caused by excessive effective eccentricity.

井架不正或井口偏心,会造成近井口套管(或套管防磨套)的磨损。针对深井钻井中的井口附件套管偏磨问题,以动力学为基础,建立了钻柱偏磨力学模型,推导出了套管/钻柱正压力的近似计算公式,分析了影响偏磨的主要因素。计算结果表明,有效偏心距和上部钻柱的提升力是影响近井口套管偏磨的主要因素。有效偏心距越大,上部提升力越大,套管/钻柱之间的正压力将越大,磨损将越严重。由于上部钻柱的提升力随井深的增加而增加,因此应当尽量避免井口偏心或井架安装不正,防止有效偏心距过大而造成近井口套管的严重偏磨。

 
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