Three-dimensional seismic data multi-block merging processing time difference correction method and apparatus

A time difference correction, three-dimensional seismic technology, applied in the field of seismic exploration, can solve problems such as large errors, and achieve the effect of complete buried hill structure, clear unconformity strength and contact, and reasonable geological structure

Inactive Publication Date: 2017-01-04
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

This method has human factors in the selection of geological layers. Although it can solve the time difference problem, it has a large error

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  • Three-dimensional seismic data multi-block merging processing time difference correction method and apparatus
  • Three-dimensional seismic data multi-block merging processing time difference correction method and apparatus
  • Three-dimensional seismic data multi-block merging processing time difference correction method and apparatus

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Embodiment Construction

[0026] Preferred embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although preferred embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0027] figure 1 It shows a flow chart of a method for correcting time difference of multi-block mosaic processing of 3D seismic data according to an embodiment of the present invention, and the method includes the following steps:

[0028] Step 101, determine the main block as the starting block from the data blocks to be spliced, and determine that the main block is zero time difference;

[0029] Step 102, determine the direction and rout...

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Abstract

The invention provides a three-dimensional seismic data multi-block merging processing time difference correction method and apparatus. The method includes following steps: determining a main block as the initial block from to-be-merged data blocks, and determining the main block as zero time difference; determining the merging direction and route; determining a to-be-corrected block according to the merging direction and route; obtaining the time difference enabling cross correlation of seismic signals between the initial block and the to-be-corrected block to be maximum, and taking the time difference as the time difference between the initial block and the to-be-corrected block; performing time shift on the seismic signals of the to-be-corrected block according to the obtained time difference to realize time difference correction between the to-be-corrected block and the initial block; and determining a new initial block and a new to-be-corrected block according to the determined merging direction and route when the to-be-corrected block is not the last to-be-merged data block, and executing the steps of time difference obtaining and time difference correction repeatedly.

Description

technical field [0001] The disclosure belongs to the field of seismic exploration, and in particular relates to a time difference correction method and device for multi-block splicing processing of three-dimensional seismic data. Background technique [0002] In seismic exploration, the splicing and processing of seismic data has entered the stage of widespread application. During seismic exploration (especially oil and gas seismic exploration), the area of ​​a single block is mostly relatively small, ranging from one hundred to several hundred square kilometers. With the continuous deepening of seismic exploration, this "stamp-like" data has affected the overall macroscopic understanding and overall structural interpretation of the underground geological structure. At present, most oilfields stitch together the data of small exploration blocks in order to conduct geological research on large blocks. Due to the seismic time difference of the same stratigraphic wave group a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/36
Inventor 郭恺杨瑞娟
Owner CHINA PETROLEUM & CHEM CORP
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