Depth domain seismic fluid analysis method, device and system and storage medium

Abstract

The invention discloses a depth domain seismic fluid analysis method, device and system and a computer readable storage medium. The method comprises the steps that pulse data of each sampling point inthe imaging process under different incident angles is acquired respectively; according to each piece of pulse data corresponding to each incident angle, subspace diffusion matrixes in one-to-one correspondence with all the sampling points under the corresponding incident angles are established; a convolution model of a depth domain is established according to each subspace diffusion matrix to obtain a depth domain synthetic seismic record; and inversion analysis is performed on the depth domain synthetic seismic record to obtain an inversion analysis result. According to the method, the subspace diffusion matrix of each sampling point under the different incident angles is established based on the pulse data corresponding to each sampling point under the different incident angles, then the convolution model of the depth domain is established, therefore, the depth domain synthetic seismic record obtained through the convolution model can better reflect the actual situation of an underground medium, and improvement to the precision of depth domain seismic fluid recognition is benefited.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of oil and gas exploration and development, and in particular to a depth domain seismic fluid analysis method, device, system and computer-readable storage medium. Background technique [0002] In recent years, seismic inversion technology has been widely used in various stages of petroleum exploration and development. It is the core technology of reservoir prediction. It can combine the advantages of high-resolution vertical logging and dense seismic horizontal sampling to estimate the The lateral change of lithology and physical property characteristic information. At present, conventional seismic inversion is carried out in the time domain. Since the log curve is converted from the depth domain to the time domain, valuable high-frequency information is lost. Difference. With the deepening of exploration and development, time-domain seismic inversion often cannot meet the requir...

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Problems solved by technology

[0004] However, this method assumes that the underground medium is a horizontal layered medium. In areas with complex structures and large velocity changes, the depth-domain wavelet extracted by the method in the prior art cannot accurately represent the actual situation of the underground medium, and cannot satisfy The needs of actual production, and the mutual conversion between different domains will cause cumulative errors, resulting in inaccurate final results of depth domain inversion

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