ANALYSIS OF RADIAL DETECTION CHARACTERISTICS OF MONOPOLE SONIC LOGGING

摘要：

Drilling causes variation of the rock properties in the vicinity of a wellbore.In this article,we use the radial cylindrical layered model to examine monopole logging response with a two-dimensional axisymmetric finite difference method.Three variables are set,that is,the transition zone thickness,the source frequency and source-receiver spacing,respectively.We also use the slowness-time correlation-method to evaluate sound speed variations under different conditions.At last,based on the ray theory,the variation characteristics of the arrival time of the first wave under different conditions are analyzed.We conclude that the radial detection characteristics of compression waves are greatly affected by spacing.By combining different signals with various spacings,it is possible to obtain the tomography of the compressional wave velocities near wellbore.

关键词： Acoustic logging Radial detection depth Finite difference method Slowness-time correlation method

作者: Yi-han GENG Hao CHEN Xiao HE Xiu-mei ZHANG Xiu-ming WANG

作者单位: State Key laboratory of Acoustics, Institute of Acoustics, Chinese Academy of Sciences, Beijing, 100 State Key laboratory of Acoustics, Institute of Acoustics, Chinese Academy of Sciences, Beijing, 100

会议类型: 国际会议

会议名称: The 2016 Symposium on Piezoelectricity,Acoustic Waves and Device Applications(2016全国压电和声波理论及器件技术研讨会)

会议地点: 西安

会议语种:英文

页码: 415-418

在线出版日期: 2016-10-21（万方平台首次上网日期，不代表论文的发表时间）