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Splicing method and device of post-stack seismic data

A seismic data and splicing device technology, applied in the field of geophysical exploration data processing, to achieve the effects of ensuring accuracy, reducing boundary differences, and eliminating boundary data differences

Active Publication Date: 2016-03-09
BC P INC CHINA NAT PETROLEUM CORP +1
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Problems solved by technology

[0004] The purpose of this application is to provide a splicing method and device for post-stack seismic data, which can eliminate the differences in seismic data of different spliced ​​blocks, solve the problem of small dip splicing between blocks, and improve the splicing effect of post-stack data

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Embodiment Construction

[0054] 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.

[0055] The method and device for splicing post-stack seismic data described in this application will be described in detail below with reference to the accompanying drawings. figure 1 It is a method flowchart of an embodiment of a post-stack seismic data splicing method described in this application. Although the present application prov...

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Abstract

The present application provides a splicing method and a device of post-stack seismic data. The method comprises a step of establishing a new coordinate system according to the boundary seismic channel coordinate of seismic data to be spliced and determining a common middle point spacing and a common middle point line spacing after splicing according to the common middle point spacing and common middle point line of the seismic data to be spliced, a step of carrying out encrypted interpolation processing on the seismic data to be spliced in the new coordinate system to form first spliced seismic data, a step of carrying out re-gridding process to form second spliced earthquake data, a step of adjusting the second spliced earthquake data to a same reference plane, and then carrying out amplitude equalization and carrying out waveform matching process to obtain third spliced seismic data, and a step of carrying out boundary cutting on the third spliced seismic data and then carrying out splicing combination to form spliced seismic data. By using the embodiment of the invention, the difference of different splicing block seismic data can be eliminated, a small angle splicing problem between blocks is solved, and the splicing effect of post-stack data is improved.

Description

technical field [0001] The present application relates to geophysical exploration data processing technology, in particular to a post-stack seismic data splicing method and device. Background technique [0002] In seismic data processing, there are usually multiple pieces of adjacent and partially covered 3D seismic data. If the blocks are interpreted separately, it will usually be affected by the low coverage of block data boundaries, low signal-to-noise ratio, and noise effects. Even at the boundary where the seismic data of different blocks are connected, the same structure is located in different blocks, which makes it difficult to carry out a complete structural interpretation due to the influence of the block seismic data. [0003] For the seismic data collected in the same seismic work area, due to different field acquisition conditions and inconsistent processing procedures, the boundary effect of the processed seismic data is serious. This will lead to large chang...

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Application Information

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IPC IPC(8): G01V1/28
CPCG01V1/28
Inventor 陈海云钱忠平熊定钰董志刚
Owner BC P INC CHINA NAT PETROLEUM CORP
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