平均衰减系数β₀,_j(t₀)的求取

EVALUATION OF THE AVERAGE ATTENUATION COEFFICIENT β₀,_j(t₀)

大港油田地调指挥部

目前,应用地震勘探资料研究岩性、岩相的工作有了不少新发展,因而对地震资料的处理就相应提出了更高的要求。例如作真振幅恢复,并在此基础上进行“拟测井油线”、“瞬时相位、瞬时频率及瞬时振幅剖面”等项处理。《石油物探》1980年第4期刊登了《在连续介质情况下真振幅恢复》一文。文中只对数学模型及其实现过程作了一些论述。本文是文献[1]的补充,介绍了平均衰减系数(β₀,j（t₀）的求取,并实际处理了一些剖面。处理的结果证明效果良好,方法也简单易行。

At present, the study of lithology as well as lithofacies using seisdata has made a marked progress and the higher requirements to the data processing are called for. The recovery of true amplitude, plotting of the curve of pseudo velocity log, mapping of the sections of instantaneous phase, the instantaneous frequency and the instantaneous amplitude, etc. are now becoming conventional processing.In GEOPHYSICAL PROSPECTING FOR PETROLEUM No.4, 1980, an article entitled The True Amplitude Recovery in Continuous Media[1] was carried. A discussion about the mathematical models and their realization was drawn. The paper presented here is a supplement to [1]. It explains how to obtain the average attenuation coefficient β₀,j（t₀）. Some examples are given. Its Procedure is simple and easy and it has achieved a proven success.