Low-frequency absorption attenuation gradient detection based on improved generalized S transform
Low-frequency absorption attenuation gradient detection based on improved generalized S transform
复制标题
DOI：
--
复制
发表时间：
2011
期刊：
影响因子：
--
通讯作者：
Z. Gu
中科院分区：
文献类型：
--
作者：
Z. Gu
本文利用改进广义S变换时频分辨率高的优点，利用低频时频谱确定地震波的衰减梯度，并与常规广义S变换的衰减梯度进行比较，以获得更好的油气指示效果。结果应用表明，基于改进广义S变换的低频吸收衰减梯度和基于常规广义S变换的高频吸收衰减梯度能够相互支持，更好地指示油气的存在。
In this paper,we take the advantage of high time-frequency resolution of the improved generalized S transform and use the time-frequency spectrum at low frequency to determine seismic attenuation gradient,then compare the result with the attenuation gradient based on conventional generalized S transform in order to get better oil and gas indication.The theoretical analysis,numerical simulation,and application of results show that the low-frequency absorption attenuation gradient based on improved generalized S transform and the high-frequency absorption attenuation gradient based on conventional generalized S transform can mutually support each other and better indicate the existence of oil and gas.