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Sub-azimuth first arrival data volume acquisition method and device

An acquisition method and technology of an acquisition device are applied in the field of acquisition of sub-azimuth first-arrival data volumes, and can solve problems such as affecting the progress of seismic data processing and affecting the aging requirements of seismic data.

Active Publication Date: 2018-06-01
BC P INC CHINA NAT PETROLEUM CORP +1
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Problems solved by technology

This greatly affects the timeliness requirements for surface modeling, static correction, and seismic data processing, and also affects the progress of the entire seismic data processing.

Method used

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  • Sub-azimuth first arrival data volume acquisition method and device
  • Sub-azimuth first arrival data volume acquisition method and device
  • Sub-azimuth first arrival data volume acquisition method and device

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Embodiment Construction

[0085] 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.

[0086] During seismic exploration, excitation points and receiver points can be set on the surface in advance. Seismic waves are artificially excited, seismic data are received at each receiver point, and seismic exploration is completed through processing and interpretation of seismic data. When the shear wave passes through the HTI (Ho...

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Abstract

The invention provides a sub-azimuth first arrival data volume acquisition method and device. The method comprises steps: according to an acquired geophone file and a shot point file, a geophone permutation index file corresponding to shot points is built; according to the shot point file and a pre-defined sub-azimuth starting angle and a termination angle, a shot point starting line and a shot point termination line corresponding to the shot points are built; according to the geophone permutation index file corresponding to the shot points, a starting intersection point and a termination intersection point between an effective geophone line corresponding to the shot points and the shot point starting line and the shot point termination line are acquired; according to the starting intersection point and the termination intersection point, effective geophones in a starting angle and termination angle range in the effective geophone line are acquired; and first arrival data correspondingto the effective geophones are acquired, and a sub-azimuth first arrival data volume is built according to the first arrival data. By using each embodiment of the invention, the calculation amount for acquiring the sub-azimuth seismic first arrival data is reduced, and the seismic data processing speed is improved.

Description

technical field [0001] The application belongs to the technical field of geophysical exploration and processing, and in particular relates to a method and device for acquiring first-arrival data volumes by azimuth. Background technique [0002] Azimuth seismic data processing is a commonly used technology in seismic data processing at present, that is, to obtain seismic data corresponding to different azimuths for analysis and processing of seismic data, which is particularly important for the analysis of anisotropy. Correspondingly, azimuth surface modeling and static correction techniques also need to be applied in conjunction with azimuth seismic data processing. The azimuth first arrival data is a basic data for azimuth surface inversion modeling and static correction calculation. [0003] In the prior art, the azimuth first arrival data is usually calculated shot by shot, that is, which receiver points in each shot point and seismic trace are calculated sequentially wi...

Claims

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Application Information

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IPC IPC(8): G01V1/36
Inventor 冯发全何永清宁宏晓冯泽元马青坡
Owner BC P INC CHINA NAT PETROLEUM CORP
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