Seismic data reconstruction method and device

A seismic data and data technology, applied in the field of seismic exploration, can solve the problems of large amount of calculation and low reconstruction efficiency of seismic data, and achieve the effect of high calculation efficiency

Active Publication Date: 2017-06-13
PETROCHINA CO LTD
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Problems solved by technology

[0005] In order to solve the problems in the prior art that when the original seismic data is reconstructed by the curvelet transform, due to the anisotropy of the curvelet transform, the calculation amount is relatively large and the reconstruction efficiency of the seismic data is low, the present invention provides a Seismic data reconstruction method and device

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  • Seismic data reconstruction method and device
  • Seismic data reconstruction method and device

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[0072] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0073] figure 1 It is a flowchart of a seismic data reconstruction method provided by an embodiment of the present invention, and the method may include the following steps:

[0074] In step 101, seismic data is acquired.

[0075] In step 102, a preset seismic data threshold is obtained.

[0076] In step 103, the seismic data is reconstructed in the wave atomic domain according to the preset seismic data threshold through a convex set projection algorithm, and the reconstructed seismic data is obtained.

[0077] To sum up, the seismic data reconstruction method provided by the embodiment of the present invention reconstructs the irregular and missing seismic data by using the convex set projection algorithm in the wave atomic domain,...

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Abstract

The invention discloses a seismic data reconstruction method and device, and belongs to the field of seismic exploration. The method includes the steps: acquiring seismic data; acquiring a preset seismic data threshold; reconstructing the seismic data in a wave atom domain by a convex set projection algorithm according to the preset seismic data threshold to obtain reconstructed seismic data. The seismic data in irregular deficiency are reconstructed in the wave atom domain by the convex set projection algorithm, and the method solves the problems that calculated amount is large due to anisotropy of flexural wave transformation, and seismic data reconstruction efficiency is low when original seismic data are reconstructed by flexural wave transformation in related technology. Calculation efficiency is high in seismic data reconstruction on the premise of ensuring precision of the reconstructed seismic data.

Description

technical field [0001] The invention relates to the field of seismic exploration, in particular to a seismic data reconstruction method and device. Background technique [0002] Seismic exploration is an important technology for surveying oil and natural gas resources before drilling. This technology is also widely used in coal field and engineering geological exploration, regional geological research and crustal research. However, due to the complexity of the environment, the limitations of instrument errors and economic costs, the acquired seismic data is often under-sampled, and under-sampled seismic data will lead to irregular and missing information. Irregular and missing raw seismic data will have a serious impact on data processing. Therefore, it is necessary to reconstruct the original seismic data. [0003] In the related art, when reconstructing the original seismic data, the seismic data reconstruction method based on sparse transformation is usually used. In th...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/32
CPCG01V1/32
Inventor 赵贤正宋炜叶秋焱李景叶崔永谦王雪萍白旭明崔宏良时逢峰王四成袁胜辉张传宝
Owner PETROCHINA CO LTD
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