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Seismic migration imaging method and device

A seismic migration and imaging method technology, which is applied in seismology, measuring devices, seismic signal processing, etc., can solve problems such as low compensation accuracy, poor effect, and inaccurate migration imaging results, and achieve stable attenuation and improved resolution rate effect

Inactive Publication Date: 2017-01-04
BC P INC CHINA NAT PETROLEUM CORP +1
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Problems solved by technology

[0004] The inventors found that there are at least the following problems in the prior art: In the existing seismic migration method, the acquired seismic wave is processed by Q compensation processing method, since the existing traditional compensation method is one-dimensional compensation in the time domain, Therefore, the compensation accuracy is low, which leads to inaccurate imaging results of offset imaging and poor effect

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  • Seismic migration imaging method and device

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Embodiment Construction

[0052] Embodiments of the present application provide a seismic migration imaging method and device.

[0053] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described The embodiments are only some of the embodiments of the present application, but not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0054] figure 1 It is a flowchart of an embodiment of the seismic migration imaging method of the present application. Such as figure 1 As shown, the seismic migration method shown may include:

[0055] S101: Acquire seismic data, an...

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Abstract

The embodiment of the invention discloses a seismic migration imaging method and device. The method comprises the following steps: obtaining seismic data, determining imaging velocity field data and quality factor field data according to the seismic data; calculating ray path compensation travel time according to the quality factor field data; obtaining a travel-time table, a compensation travel schedule and prestack seismic trace data corresponding to the seismic data; compensating the prestack seismic trace data according to the travel-time table and the compensation travel schedule; generating an imaging result according to the compensated prestack seismic trace data. According to the seismic migration imaging method and device disclosed by the embodiment of the invention, the accuracy of the migration imaging result can be improved.

Description

technical field [0001] The present application relates to the technical field of petroleum geophysical exploration seismic data processing, in particular to a seismic migration imaging method and device. Background technique [0002] The seismic migration imaging method is based on the excitation of elastic waves on the ground in a certain way, and recording the reflection waves from the underground elastic interface within a certain range (aperture) on the ground, and using the reflection waves for imaging, and then studying the underground A method of geological stratum structure and its physical properties. [0003] Existing seismic migration methods generally include: assuming that the subsurface medium is an acoustic wave or an elastic wave, and obtaining reflected waves from an underground elastic interface. Imaging is performed using the acquired reflected waves. Furthermore, because the underground formation medium is not a completely elastic medium, and due to the...

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Application Information

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IPC IPC(8): G01V1/28
CPCG01V1/28G01V2210/512
Inventor 张巍毅王成祥张建磊崔全顺
Owner BC P INC CHINA NAT PETROLEUM CORP
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