Unlock instant, AI-driven research and patent intelligence for your innovation.

A Fine Residual Static Correction Method

A technology of static correction and static correction amount, which is applied in seismic signal processing and other directions, and can solve problems such as the inability to improve the accuracy of residual static correction, the lack of effective measures, and the analysis of seismic wavelet deformation traces.

Active Publication Date: 2016-06-08
CHINA PETROLEUM & CHEM CORP +1
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, the method for optimizing the model trace proposed above does not analyze the influence of the seismic wavelet deformation trace on the model trace, nor does it propose targeted and effective measures. Therefore, it cannot solve the problem that the remaining static correction accuracy cannot be solved when the seismic wavelet deformation is serious. raised questions

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A Fine Residual Static Correction Method
  • A Fine Residual Static Correction Method
  • A Fine Residual Static Correction Method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0020] The shot point mentioned in this article refers to the location of the excitation source, and the receiver point refers to the location of the instrument that receives the seismic wave signal.

[0021] Such as figure 1 As shown, according to an embodiment of the present invention, a fine residual static correction method is provided for processing raw seismic data, the raw seismic data includes at least one CMP gather, each CMP gather contains a plurality of seismic traces , for example, the number of CMP gathers can be M, and the number of seismic traces contained in each CMP gather can be N, which can be recorded as g 1 (t), g 2 (t)... g n (t), 1≤n≤...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a fine residual static correction method used for processing original seismic data. The original seismic data comprise at least one CMP trace gather, and each CMP trace gather comprises a plurality of seismic traces. The method comprises the steps that (A), wavelet deformation trace pretreatment is conducted on the seismic traces in each CMP trace gather to eliminate the seismic traces with serious wavelet deformation; (B), self-adaptive separation superposition is conducted on the seismic traces in each CMP trace gather to generate new model traces G2(t); (C), cross-correlation calculation is conducted between the seismic traces in each CMP trace gather and the corresponding new CMP superposition model traces G2(t) to obtain the delay time of the seismic traces in the CMP trace gather; (4), after the steps (A), (B) and (C) are executed on the CMP trace gather, the statistical cross-correlation algorithm is adopted to separate the shotpoint static correction value and the detection point static correction value. According to the scheme, the influences of seismic wavelet deformation traces on the model traces are suppressed greatly, the calculation precision of the residual static correction method is effectively improved, and the stacked section structure imaging of the seismic data is clearer.

Description

technical field [0001] The invention relates to the field of digital signal processing of seismic data, in particular to a residual static correction method for suppressing wavelet deformation traces. Background technique [0002] In the field of residual static correction processing of seismic data, the statistical cross-correlation algorithm is usually used in CMP (common center point) gathers to solve the static correction values ​​of shot points and receiver points. This method believes that in the common reflection point gather, the event of the reflected wave from the same reflection point should be a straight line, and the residual static correction of each seismic trace can be obtained through the cross-correlation between each trace record and the superimposed trace of the gather quantity. [0003] The basic implementation steps of the statistical correlation method mainly include three steps: first, generate the common reflection point gather and superimpose the m...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01V1/36
Inventor 吴波唐建明杨克明徐天吉甘其刚王荐马昭军胡治权张虹李显贵曹波郑公营江莹莹斯兴炎丁蔚楠
Owner CHINA PETROLEUM & CHEM CORP