Extraction method for in-phase axis slope in seismic data and application thereof

A technology of event slope and extraction method, which is applied in the field of event slope extraction in seismic data, can solve problems such as slow calculation speed, poor accuracy, and poor adaptability, and achieve good results, good underground layer velocity, and event clear effect

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

However, the calculation speed of this method is slow, and the adaptability is poor in the case of seismic noise, and the accuracy becomes poor due to the influence of seismic noise, and the event slope cannot be obtained accurately

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  • Extraction method for in-phase axis slope in seismic data and application thereof
  • Extraction method for in-phase axis slope in seismic data and application thereof
  • Extraction method for in-phase axis slope in seismic data and application thereof

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[0030] The implementation of the present invention will be described in detail below in conjunction with the accompanying drawings and examples, so that implementers of the present invention can fully understand how the present invention uses technical means to solve technical problems, and achieve the realization process of technical effects and according to the above-mentioned realization process The present invention is implemented concretely. It should be noted that, as long as there is no conflict, each embodiment and each feature in each embodiment of the present invention can be combined with each other, and the formed technical solutions are all within the protection scope of the present invention.

[0031] The following is based on the attached figure 1 The flow chart in will describe the implementation process of the method of the present invention in detail. The steps shown in the flowcharts of the figures can be performed in a computer system comprising, for examp...

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Abstract

The invention discloses an extraction method for an in-phase axis slope in seismic data. The extraction method comprises the following steps that step one, the seismic data are acquired; step two, discrete curvelet transformation is performed based on the seismic data so that a series of curvelet transformation coefficients are obtained; step three, inverse transformation is performed based on the main curvelet transformation coefficient of a series of the curvelet transformation coefficients so that the curvelet carrying directional information is obtained; and step four, the in-phase axis slope is extracted according to the curvelet carrying the directional information. Another embodiment of the invention provides an application of the extraction method in seismic data processing and imaging. According to the extraction method, the accurate slope can be obtained so as to have great effect in seismic data processing and imaging.

Description

technical field [0001] The invention relates to the field of geological exploration, in particular to a method for extracting event slope in seismic data. Background technique [0002] The event slope refers to the tangent slope of the local correlation reflection event on a certain gather on the seismic gather, that is, the gradient of the reflection traveltime on the gather in the direction of spatial coordinates, representing the slowness horizontal component or ray parameter. The extraction of event slope is an important link in the process of seismic data processing and imaging. Its value can reflect the position information of underground formations and has different meanings in different gathers. Next steps in the process, velocity modeling and migration imaging, etc. provide support and assistance, and improve the final result. [0003] The τ-p transform, also known as oblique superposition, is a discretized Radon transform. The idea is to superimpose and sum the s...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/28
Inventor 宋林孙武亮段心标张兵
Owner CHINA PETROLEUM & CHEM CORP
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