Transient wave packet extraction method, storage medium and terminal based on deep wavenumber spectrum
An extraction method and wavenumber spectrum technology are applied in the fields of transient wave packet extraction, storage medium and terminal based on depth wavenumber spectrum, which can solve the problems affecting the accuracy of depth domain inversion and low similarity, and achieve good matching and elimination. The effect of high wavenumber reflection coefficient, the effect of getting rid of dependence
Active Publication Date: 2019-09-20
CHINA UNIV OF PETROLEUM (EAST CHINA)
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Synthetic seismic records using the same wave packet in the depth domain are not in line with the actual situation, so the similarity between the synthetic seismic records and the observed seismic records is not high, which affects the accuracy of depth domain inversion
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[0038] The present disclosure will be further described below in conjunction with the accompanying drawings and embodiments.
[0039] It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
[0040] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinati...
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The present disclosure provides a transient wave packet extraction method, storage medium and terminal based on the depth wave number spectrum. The depth wave number spectrum is obtained by integrally transforming the depth domain seismic signal; the wave number spectrum of each depth point is transformed into a homomorphic domain, to obtain the corresponding wavenumber complex spectrum, and inversely transform it into a wavenumber spectrum after low-pass filtering; determine the maximum value of the wavenumber spectrum at each depth point in the wavenumber spectrum, and calculate the transient wave packet corresponding to the depth according to the wavenumber corresponding to the maximum value ; Synthesize the depth-domain seismic records and compare them with the observed seismic records. If the difference exceeds the set value, return to the integral transformation, change the adjustment factor of the integral transformation, and obtain the depth wavenumber spectrum again until the final calculated difference meets the set value.
Description
technical field [0001] The present disclosure relates to a method for extracting transient wave packets based on deep wavenumber spectrum, a storage medium and a terminal. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute prior art. [0003] With the development of prestack depth migration technology, there are more and more depth domain seismic data. Compared with the time-domain data, the depth-domain seismic data has the characteristics of real and intuitive structure, and the logging data can be comprehensively used to obtain more accurate data reflecting the underground strata. In the inversion of depth seismic data, a crucial step affecting the inversion process is to synthesize seismic records in the depth domain and perform horizon calibration in the depth domain. Depth-domain horizon calibration is a bridge connecting depth-domain seismic data and w...
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IPC IPC(8): G01V1/28
Inventor 张繁昌胥勋勇朱磊桑凯恒唐杰张佳佳
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)