Imaging method and device for diffracted waves
An imaging method and diffraction wave technology, applied in seismic signal processing and other directions, can solve the problems of poor diffraction wave imaging quality, and achieve the effect of good practicability, accurate analysis and judgment results, and reduction of construction risks.
Active Publication Date: 2018-07-24
CHINA UNIV OF MINING & TECH (BEIJING)
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[0005] In view of this, the object of the present invention is to provide a diffracted wave imaging method and device to alleviate the technical problem of poor imaging quality of the diffracted wave due to serious energy loss during the imaging process of the diffracted wave
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[0058] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. the embodiment. 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.
[0059] At present, the method of separating the diffraction wave from the original seismic record and then imaging the diffraction wave separately in the existing technology does not fully consider the amplitude characteristics of the common offset diffraction wave data, resulting in serious energy loss and poor imaging quality , the imaging process is complicated. Based on this, th...
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The invention provides a diffracted wave imaging method and device. The diffracted wave imaging method comprises the steps of acquiring seismic common offset data; performing separation processing on the seismic common offset data, and acquiring common offset diffracted wave data after separation; extracting diffracted wave amplitude values corresponding to the common offset diffracted wave data, and enabling the amplitude values to form an imaging vector; and performing imaging processing on the imaging vector to acquire a diffracted wave imaging result. According to the invention, the amplitude values of the separated common offset diffracted wave data are enabled to act as a starting point, a high-quality imaging result is acquired through imaging processing, then an analysis and judgment result is enabled to be more accurate through performing analysis and judgment on a geologic stratum according to the high-quality imaging result, the construction risk is reduced, and the practicability is good. The diffracted wave imaging method and device relieve a technical problem of poor imaging quality caused by serious energy loss in the process of performing imaging processing on diffracted waves in the prior art.
Description
technical field [0001] The invention relates to the technical field of seismic wave imaging, in particular to an imaging method and device for diffracted waves. Background technique [0002] In the process of large-scale mining of coal fields, seismic exploration is usually used to locate non-uniform and discontinuous geological bodies. These non-uniform and discontinuous geological bodies include faults, small-scale collapse columns and fractures, etc., which are crucial to mechanized safe production. In the original data of seismic exploration (ie, seismic wave data), there are both diffracted waves and reflected waves. Among them, the reflected wave is a macroscopic reflection of the geological background, and the diffracted wave is the reflection of geological details, which is to improve the seismic resolution. important information carrier. [0003] At present, there are many methods for identifying and locating non-uniform and discontinuous geological bodies in the i...
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IPC IPC(8): G01V1/30
CPCG01V1/30
Inventor 赵惊涛彭苏萍杜文凤崔晓芹李闯建
Owner CHINA UNIV OF MINING & TECH (BEIJING)