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Automatic method for tracing high-frequency sequence of post-stack seismic data

A technology for automatic tracking and seismic data, applied in seismic signal processing and other directions, can solve problems such as low accuracy, inconsistent events, time-consuming and labor-intensive, etc., and achieve efficient interpretation

Inactive Publication Date: 2019-07-09
北京诺克斯达石油科技有限公司
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Problems solved by technology

[0004] The traditional method of high-frequency sequence interpretation, if it is based on well logging data, depends on human interpretation experience, which is subjective, time-consuming and labor-intensive; if it is determined by defining a parallel relationship, it is not necessarily consistent with the seismic event, so High efficiency but low accuracy

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  • Automatic method for tracing high-frequency sequence of post-stack seismic data
  • Automatic method for tracing high-frequency sequence of post-stack seismic data
  • Automatic method for tracing high-frequency sequence of post-stack seismic data

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[0039] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. 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.

[0040] see Figure 1 to Figure 4 , this embodiment provides a method for automatic tracking of high-frequency sequences of post-stack seismic data, the method for automatic tracking of high-frequency sequences of post-stack seismic data is as follows figure 1 The following steps are shown:

[0041] S101. Denoising the post-stack seismic dat...

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Abstract

The invention discloses an automatic method for tracing a high-frequency sequence of post-stack seismic data. The automatic method includes the following steps that firstly, a post-stack seismic datavolume is denoised, and an instantaneous phase volume is calculated; secondly, a three-level sequence interface or a system domain interface is traced; thirdly, the three-level sequence interface or the system domain interface traced in the second step is used as a screenwork, and phase unfolding volumes of the instantaneous phase volume calculated in the first step are calculated segmentally andthen merged; and fourthly, a contour surface is extracted from the merged phase unfolding volume and used as the high-frequency sequence. According to the automatic method for tracing the high-frequency sequence of the post-stack seismic data, the high-frequency sequence can be traced automatically, the efficiency is high, and the accurate isochroneity is achieved.

Description

technical field [0001] The invention relates to the technical field of petroleum geophysical prospecting, in particular to an automatic tracking method for high-frequency sequence of post-stack seismic data. Background technique [0002] In seismic data interpretation, high-frequency sequences refer to fourth- and fifth-order sequences. Accurate isochronic high-frequency sequence is of great significance for sedimentary analysis and characterization of sedimentary bodies using isochronal slices. [0003] At present, high-frequency sequence interpretation is mainly manual interpretation. Establish the high-frequency sequence of the work area according to the logging data in the work area, or determine the high-frequency sequence by defining a simple parallel relationship. This completes the high-frequency sequence interpretation. [0004] The traditional method of high-frequency sequence interpretation, if it is based on well logging data, depends on human interpretation e...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/28
CPCG01V1/28
Inventor 刘力辉
Owner 北京诺克斯达石油科技有限公司
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