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Analysis method and apparatus of wide-azimuth seismic migration speed

A technology of seismic migration and analysis method, applied in the field of geological exploration, can solve the problem of low efficiency in eliminating azimuth anisotropy, and achieve the effect of improving efficiency

Inactive Publication Date: 2017-05-17
INST OF GEOLOGY & GEOPHYSICS CHINESE ACAD OF SCI
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Problems solved by technology

[0006] The purpose of the present invention is to provide a kind of analysis method and device of wide azimuth seismic migration velocity, to alleviate the low technical problem of eliminating azimuth anisotropy in the prior art

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Embodiment Construction

[0024] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0025] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, ...

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Abstract

The invention provides an analysis method and apparatus of wide-azimuth seismic migration speed, and relates to the technical field of geological prospecting. The analysis method of wide-azimuth seismic migration speed includes the steps: obtaining trace gather data after performing offset processing on an offset vector sheet; classifying the trace gather data after performing offset processing on the offset vector sheet according to an azimuth angle, and obtaining the azimuth angle trace gather data of the preset number through classification; performing residual speed scanning processing on each azimuth trace gather data, and obtaining the speed scanning result; and performing dual-path integral stacking processing on the speed scanning result so as to extract the speed parameters of each azimuth trace gather data and obtain the speed model of each azimuth trace gather data. Therefore, the analysis method and apparatus of wide-azimuth seismic migration speed relieves the technical problem that in the prior art, the efficiency of eliminating azimuthal anisotropism is relatively lower.

Description

technical field [0001] The invention relates to the technical field of geological exploration, in particular to an analysis method and device for wide-azimuth seismic migration velocity. Background technique [0002] With the rapid development of the field of geological exploration, and the complexity of geological exploration targets and the improvement of seismic exploration accuracy requirements, the application of wide-area geological exploration technology has become the mainstream and direction of geological exploration technology development. The purpose of wide-azimuth seismic data acquisition is to obtain a 3D data volume whose observation azimuth, offset and coverage times are distributed as evenly as possible. [0003] However, due to the anisotropic nature of the subsurface medium, for example, the existence of heterogeneity and directional fractures, the seismic waves travel at different speeds along different azimuths. Accurate homing of data usually requires ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/36G01V1/30
CPCG01V1/362G01V1/303G01V2210/514G01V2210/52G01V2210/6222
Inventor 梁瑶王真理
Owner INST OF GEOLOGY & GEOPHYSICS CHINESE ACAD OF SCI
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