摘要
为准确获取反映不同地质信息的波场信号,必须对阵列声波测井全波中包含的地层信息进行波场分离。采用高分辨率拉东变换对阵列声波测井全波进行分离处理,消除假频与端点效应的影响,能量进一步集中;采用双共轭梯度算法实现快速计算,在确保信号不失真情况下提高分辨率。理论模拟波场处理结果证实,通过对比分析不同波场分离方法表明,该方法分辨率高,信号不失真,处理速度快,对于阵列声波测井斯通利波波场分离具有明显的优越性。
It is necessary to separate the wave-field to get wavefield signals reflecting different geology information.The paper uses high-resolution Radon transform to separate array acoustic logging full wave-field.The method eliminates alias and end effect.Bi-conjugate gradient method is used to accelerate computation velocity and improve resolution without distortion,and makes energy more assembly.Theoretical simulation indicates that the method is of great reliability.And the comparision with other methods indicates that this method has advantages of high resolution,no distortion and fast processing velocity.
出处
《测井技术》
CAS
CSCD
北大核心
2014年第4期416-420,430,共6页
Well Logging Technology
关键词
阵列声波测井
波场分离
分辨率
拉东变换
双共轭梯度
端点效应
array acoustic logging
wave-field separation
resolution
Radon transform
bi-conjugate gradient
end effect
