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Seismic data velocity interpolation method and system

A technology of seismic data and interpolation method, applied in seismic signal processing and other directions, can solve the problem that the velocity obtained by interpolation is no longer accurate, affecting the imaging results, etc., to improve the imaging results, improve the accuracy of velocity interpolation, and accurately reflect the effect.

Inactive Publication Date: 2017-04-19
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

In the prior art, the commonly used methods for velocity analysis of seismic data are bilinear and biquadratic interpolation methods, which can satisfy the data processing of most work areas, but in areas with severe changes in underground lateral structures, these two conventional methods interpolate The resulting velocity is no longer accurate, seriously affecting the final imaging result

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  • Seismic data velocity interpolation method and system
  • Seismic data velocity interpolation method and system
  • Seismic data velocity interpolation method and system

Examples

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no. 1 example

[0014] see figure 1 , which shows a flowchart of the steps of a seismic data velocity interpolation method according to an example of the present disclosure. In this embodiment, the method may include the following steps:

[0015] Step 101, obtaining the velocity value in the seismic data;

[0016] Step 102, using cubic convolution to interpolate the obtained velocity value;

[0017] Step 103, perform imaging processing on the seismic data according to the interpolated velocity value.

[0018] This embodiment uses cubic convolution to interpolate the velocity values ​​in the acquired seismic data, and then performs imaging processing on the seismic data, which improves the accuracy of velocity interpolation, improves the imaging results, and can more accurately reflect the lateral changes of underground structures .

[0019] Get Velocity Values ​​from Seismic Data

[0020] In an example, those skilled in the art can obtain the velocity value in the seismic data through any...

no. 2 example

[0037] In this embodiment, a seismic data velocity interpolation system is provided, and the system may include the following units: an acquisition unit, which acquires velocity values ​​in the seismic data; an interpolation unit, which uses cubic convolution to perform interpolation operations on the acquired velocity values ; The imaging unit performs imaging processing on the seismic data according to the velocity value after the interpolation operation.

[0038] This embodiment uses cubic convolution to interpolate the velocity values ​​in the acquired seismic data, and then performs imaging processing on the seismic data, which improves the accuracy of velocity interpolation, improves the imaging results, and can more accurately reflect the lateral changes of underground structures .

[0039] get unit

[0040] In one example, the acquisition unit acquires the velocity value in the seismic data. The velocity value can be layer velocity, ray velocity, and stacking velocity...

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Abstract

The invention provides a seismic data velocity interpolation method and system; the method comprises the following steps: obtaining a velocity value of the seismic data; using Cubic Convolution to carry out interpolation operation for the obtained velocity value; carrying out imaging process for the seismic data according to the velocity value after interpolation operation. The method and system can improve the velocity interpolation precision, thus improving imaging result, and more accurately reflecting subsurface structure lateral variations.

Description

technical field [0001] The present disclosure relates to the field of seismic signal processing, in particular to a seismic data velocity interpolation method and system. Background technique [0002] In the process of seismic data processing, velocity analysis is a very important process, which affects the accuracy of imaging and determines the success or failure of processing. However, in interactive velocity analysis, due to the workload and the limitation of actual conditions, it is difficult to pick up velocity points for each surfel. Therefore, in the production process, the speed points are usually analyzed at a certain interval based on the data line point number of the loaded grid, and then calculated through space interpolation to increase the density of the speed analysis points, thereby improving the accuracy of data processing and improving The final imaging result. In the prior art, the commonly used methods for velocity analysis of seismic data are bilinear ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/28
Inventor 刘晨徐颖张印堂吕秋玲
Owner CHINA PETROLEUM & CHEM CORP
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