石油学报 ›› 2005, Vol. 26 ›› Issue (6): 90-92.DOI: 10.7623/syxb200506020

• 油田开发 • 上一篇    下一篇

低频波在油层中衰减系数预测模型的实验研究

王瑞飞1, 孙卫1, 岳湘安2, 张荣军3   

  1. 1. 西北大学大陆动力学教育部重点实验室, 陕西, 西安, 710069;
    2. 中国石油大学石油天然气工程学院, 北京, 102200;
    3. 西安石油大学石油工程学院, 陕西, 西安, 710065
  • 收稿日期:2004-12-16 修回日期:2005-01-25 出版日期:2005-11-25 发布日期:2010-05-21
  • 作者简介:王瑞飞,男,1978年1月生,2000年毕业于大庆石油学院石油工程系,现为西北大学地质学系矿产普查与勘探专业博士研究生.E-mail:sirwrf2003@163.com
  • 基金资助:
    国家重点基础研究发展规划(973)项目(2003CB214606)资助

Experimental research on attenuation coefficient model of low-frequency wave in oil layer

WANG Rui-fei1, SUN Wei1, YUE Xiang-an2, ZHANG Rong-jun3   

  1. 1. Key Laboratory for Continental Dynamics in Ministry of Education, Northwest University, Xi'an 710069, China;
    2. College of Petroleum Engineering, China University of Petroleum, Beijing 102200, China;
    3. Faculty of Petroleum Engineering, Xi'an Shiyou University, Xi'an 710065, China
  • Received:2004-12-16 Revised:2005-01-25 Online:2005-11-25 Published:2010-05-21

摘要: 利用室内实验所采集的低频水力振动在岩心中传播的时域分析、频域分析、振幅在岩心中的变化以及相关的实验数据,定性分析了振幅在岩心中的传播规律,并建立了振幅衰减率在x传播方向上变化的基本模型,得出衰减系数与振源振幅的关系式。应用量纲分析和相似原理建立了相关参数的函数关系式,对数据进行分析回归得出系数A、B的表达式,推导出低频波在油层中衰减系数的预测模型。应用此数学模型计算了低频水力脉冲压力波在油层渗流条件下的有效作用距离,所得结果与油田实际情况基本吻合。

关键词: 油藏, 低频波, 振幅衰减率, 衰减系数, 数学模型, 实验研究

Abstract: The transmission laws for the amplitude of low-frequency hydraulic vibration in the core were qualitatively analyzed by means of the time-domain analysis, frequency-domain analysis, variation of amplitude and related experimental data. A fundamental model for describing the amplitude decay rate varying in x transmission orientation was established, and a functional equation for expressing the attenuation coefficient and amplitude of vibration was obtained. Another functional expression of relative parameters was presented by the use of the unit analysis and the law of similarity. The functional equations of A and B were induced by processing and analyzing the data, and a forecasting model for the attenuation coefficient of the low-frequency wave in oil layer was deduced. The mathematical models were used to calculate the effective functioning distance of the low-frequency hydraulic pulse wave under the condition of fluid flow in oil layer. The simulation results agree well with the actual data of oil field.

Key words: oil reservoir, low-frequency wave, amplitude decay rate, attenuation coefficient, mathematic model, experimental research

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