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Image-guided seismic velocity interpolation method and computer-readable storage medium

An interpolation method and speed technology, which can be used in computing, graphics and image conversion, and image data processing. degree of effect

Active Publication Date: 2021-12-24
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to propose an image-guided seismic velocity interpolation method, which can overcome the defects of conventional seismic velocity interpolation methods, such as low interpolation accuracy and inconsistency with geological structure features

Method used

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  • Image-guided seismic velocity interpolation method and computer-readable storage medium
  • Image-guided seismic velocity interpolation method and computer-readable storage medium
  • Image-guided seismic velocity interpolation method and computer-readable storage medium

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Embodiment

[0086] In the embodiment of the present invention, the above method is applied to perform image-guided velocity interpolation on the input velocity model. figure 2 Displays the input original velocity model, which changes drastically laterally and contains small-scale abnormal bodies, which is suitable for verifying the accuracy of the velocity interpolation method under complex media conditions.

[0087] image 3 show figure 2 The original velocity model in the horizontal and vertical directions is respectively thinned to one-tenth of the original velocity model, image 3 The white dots in the middle indicate the known speed control points after thinning. The speed control points in this embodiment are obtained by uniformly thinning the original speed model along the horizontal and vertical directions, that is, only retaining 1 of the original speed model in the horizontal and vertical directions. / 10 as a known control point.

[0088] Figure 4 show for figure 1 The o...

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Abstract

The invention discloses an image-guided seismic velocity interpolation method and a computer-readable storage medium. The method includes constructing a structure tensor for any point in the original seismic image; and for any point in the original seismic image, based on the structure tensor, constructing a diffusion tensor field; based on the diffusion tensor field, constructing a distance governing equation, and solving the distance governing equation to obtain a distance variable; based on the diffusion tensor field and the distance variable, constructing Image-guided velocity interpolation equations. The interpolation result of this method has high accuracy and resolution, and has a good agreement with the underground geological structure.

Description

technical field [0001] The invention relates to the field of seismic processing in oil and gas exploration and development, and more particularly relates to an image-guided seismic velocity interpolation method. Background technique [0002] The goal of seismic exploration technology is to use seismic wave imaging technology to locate, identify and describe underground structures, so as to provide intuitive and reliable basis for the exploration of underground oil and gas reservoirs. The subsurface velocity model is the most critical parameter required by seismic wave imaging technology, which directly determines the accuracy of seismic exploration. [0003] The process of subsurface velocity modeling is usually divided into two steps: initial modeling and fine modeling, both of which involve the basic technology of interpolating discrete velocities into regular gridded velocities. Conventional velocity interpolation technology often has low interpolation accuracy when velo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T3/40
CPCG06T3/4007
Inventor 倪瑶
Owner CHINA PETROLEUM & CHEM CORP
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