• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of natural gas science and engineering >Investigation on propagation characteristics of the pressure wave in gas flow through pipes and its application in gas drilling
【24h】

Investigation on propagation characteristics of the pressure wave in gas flow through pipes and its application in gas drilling

机译：管道中气流压力波的传播特性研究及其在瓦斯钻探中的应用

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

This paper aimed to investigate propagation characteristics of the pressure wave in gas flow through pipes and the potential application of the pressure wave propagation theory in the early detection of gas influxes due to encountering gas-bearing fractures in gas drilling. In this work, a simpler and reliable analytical model characterizing the propagation and attenuation of the pressure wave in gas flow through pipes with the effects of wall shear stress and viscous dissipation was proposed by performing the perturbation method, and the model was validated against experimental results. A parametric study was also performed, and the results indicate that the static pressure, angular frequency, gas mass flow rate and temperature have obvious influences on the propagation characteristics. In general, the factors above have more serious effects on the attenuation factor than the wave speed. Lower angular frequency, gas flow rate, temperature and higher static pressure tend to reduce the attenuation of the pressure wave traveling in the pipes. Based on observed characteristics of the pressure wave, a rapid and reliable technique was proposed for the early detection of the unexpected gas influxes induced by encountering gas-bearing fractures in gas drilling. The concern about the proposed detection method stems from the fact that the speed of the pressure wave propagating in drill strings is much higher than that of the produced gas travels in the annulus. Field test results indicate that the technique has a shorter detection time than traditional methods. (C) 2014 Elsevier B.V. All rights reserved.
机译：本文旨在研究管道中气流中压力波的传播特征，以及压力波传播理论在气体钻探中由于含气裂缝引起的气体涌入的早期检测中的潜在应用。在这项工作中，通过执行扰动方法，提出了一个更简单可靠的分析模型，该模型描述了壁面切应力和粘性耗散影响下气体在管道中流动的压力波的传播和衰减，并针对实验结果对该模型进行了验证。 。还进行了参数研究，结果表明静压，角频率，气体质量流量和温度对传播特性有明显影响。通常，上述因素对衰减因子的影响比波速影响更大。较低的角频率，气体流速，温度和较高的静压力往往会减小在管道中传播的压力波的衰减。基于所观察到的压力波特征，提出了一种快速可靠的技术，用于及早发现由于在天然气钻井中遇到含气裂缝引起的意外气体涌入。对所提出的检测方法的关注源于以下事实：在钻柱中传播的压力波的速度远远高于在环空中传播的采出气体的速度。现场测试结果表明，该技术的检测时间比传统方法短。 （C）2014 Elsevier B.V.保留所有权利。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号