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凌云,高军,张汝杰.基于一维弹性阻尼波动理论的沙丘Q吸收补偿.石油地球物理勘探,1997,32(6):795~803,841塔克拉玛干沙漠是世界上第二大沙漠,最高的沙丘可达300m左右。鉴于该区的短波长静校正已基本解决,目前的主要困难是资料的低信噪比和低分辨率问题。为此,本文从沙漠地区实际地震资料的分析入手,提出了基于一维弹性阻尼波动理论的沙丘Q吸收补偿方法。这一方法不仅克服了从低信噪比资料中求取子波的困难,而且避开了由沙丘起伏、激发深度与能量的大小、频率高低等的变化所带来的影响,能较好地依靠沙丘起伏的物理机制来补偿沙丘高低引起的Q吸收的能量变化。通过实际数据的试算,获得了较好的效果。
Lingyun, Gao Jun, Zhang Rujie. Sand dune Q absorption compensation based on one - dimensional elastic damping wave theory. Petroleum Geophysical Prospecting, 1997,32 (6): 795 ~ 803,841 The Taklamakan Desert is the second largest desert in the world with the highest sand dune up to 300m. In view of the shortwave static correction in the area has been basically solved, the main difficulties at present are the low signal-to-noise ratio and low resolution of the data. Therefore, based on the analysis of actual seismic data in the desert area, this paper proposes a method of Q absorption compensation based on the one-dimensional elastic damping wave theory. This method not only overcomes the difficulty of obtaining wavelet from low signal-to-noise ratio data but also avoids the influence of changes of dune undulation, excitation depth and energy size, frequency, etc. Relies on the physical mechanism of dune fluctuation to compensate for the energy change of Q absorption caused by dune height. Through the actual data trial, get better results.