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Three-dimensional seismic data fixed axial section dynamic judgment volume rendering method

A 3D seismic and volume rendering technology, applied in seismic signal processing and other directions, can solve the problems of increased CPU computing power and memory bandwidth, and is not suitable for large-scale volume rendering rendering, saving memory bandwidth, reducing data transmission load, The effect of improving efficiency

Inactive Publication Date: 2016-02-03
CHINA PETROLEUM & CHEM CORP +1
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AI Technical Summary

Problems solved by technology

Dynamic slicing requires real-time slice generation for each data block and transfers the generated slices to the display device, which imposes a great burden on the computing power of the CPU and memory bandwidth, so it is also not suitable for large-scale applications. volume rendering

Method used

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  • Three-dimensional seismic data fixed axial section dynamic judgment volume rendering method
  • Three-dimensional seismic data fixed axial section dynamic judgment volume rendering method
  • Three-dimensional seismic data fixed axial section dynamic judgment volume rendering method

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Embodiment Construction

[0046] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0047] Volume rendering algorithm for fixed axial slicing and dynamic judgment for massive 3D seismic data, and corresponding scene clipping and scene rendering modes.

[0048] Such as Figure 6 As shown, the present invention includes three parts: fixed axial slice dynamic judgment volume rendering algorithm, scene clipping, and scene rendering.

[0049] Step 1: Fixed axial slice dynamic judgment volume rendering algorithm:

[0050] The volume rendering module of the present invention adopts a pre-generated slice but dynamically selected rendering algorithm, which has the following advantages:

[0051] 1 Runtime calculation overhead CPU is very small. Utilizing the massively parallel capabilities of the GPU, heavy voxel-by-voxel calculations on the CPU are avoided.

[0052] 2 Slice data can be pre-generated and stored in video memory to save video memory bandwidt...

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Abstract

The invention provides a three-dimensional seismic data fixed axial section dynamic judgment volume rendering method, which belongs to the field of oil and gas and coalbed methane seismic exploration and development. The method comprises steps: when pretreatment is carried out on three-dimensional seismic data, fixed sections and a dynamic selection mode are adopted to reduce computation overhead in the case of operation and save memory bandwidth in the case of operation; in the case of scene cutting, a hierarchical space division tree strategy is adopted for multi-resolution block processing on the three-dimensional seismic data, a scene tree is formed, and a cutting mark is set; and in the case of scene rendering, the scene tree and the cutting mark are used for processing.

Description

technical field [0001] The invention belongs to the field of seismic exploration and development of oil and gas and coalbed methane, and in particular relates to a dynamic judging volume rendering method for fixed axial slices of three-dimensional seismic data. Background technique [0002] With the development of seismic processing and interpretation software, the application of 3D visualization technology in seismic exploration continues to expand. With the increasing accuracy of seismic exploration year by year, the generated 3D seismic pre-stack data volume has also increased from tens of GB to hundreds of GB, and has increased year by year, thus bringing new challenges to the 3D visualization of massive seismic pre-stack data—how to change Traditional data organization methods, efficient and real-time seismic data volume rendering, has become an urgent problem for scientific researchers to solve. [0003] Volume rendering uses a large number of small enough voxels (Vox...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/32
Inventor 孟黎歌岳承琪段文超陈楠
Owner CHINA PETROLEUM & CHEM CORP
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