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Method of acquiring high-precision convolution operator for converted shear wave in seismic record

A technology for converting shear waves and seismic records, applied in seismic signal processing and other directions, can solve the problem of low accuracy of deconvolution operators, and achieve the effect of high resolution

Inactive Publication Date: 2015-08-19
GEOPHYSICAL EXPLORATION CO OF CNPC CHUANQING DRILLING ENG CO LTD
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  • Abstract
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  • Application Information

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Problems solved by technology

The method can overcome the defect that the accuracy of the deconvolution operator of the converted shear wave in the seismic records obtained in the prior art is not high

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  • Method of acquiring high-precision convolution operator for converted shear wave in seismic record
  • Method of acquiring high-precision convolution operator for converted shear wave in seismic record
  • Method of acquiring high-precision convolution operator for converted shear wave in seismic record

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Embodiment Construction

[0021] Exemplary embodiments of the present invention will be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments are shown. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to example embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the example embodiments to those skilled in the art.

[0022] figure 1 A flow chart showing a method for obtaining a high-precision deconvolution operator of a converted shear wave in a seismic record according to an exemplary embodiment of the present invention.

[0023] In step S100, converted shear wave data in seismic records are acquired.

[0024] As an example, the converted shear wave data in the acquired seismic records are converted shear wave data in the time domain. For example, acquiring single-shot transforme...

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Abstract

The invention provides a method of acquiring a high-precision convolution operator for a converted shear wave in a seismic record, which comprises steps: (A) converted shear wave data in the seismic record are acquired; (B) noise data in the converted shear wave data are removed to acquire corrected converted shear wave data; and (C) a convolution operator is acquired via the corrected converted shear wave data. In the method of acquiring the high-precision convolution operator for the converted shear wave in the seismic record provided by the embodiment of the invention, the converted shear wave data are processed to acquire the high-precision convolution operator. In addition, convolution processing is carried out on the converted shear wave data via the convolution operator, high-resolution seismic data can be acquired, and the signal-to-noise ratio of the seismic data is not influenced.

Description

technical field [0001] The invention relates to the field of processing seismic data, more specifically, relates to a method for obtaining a deconvolution operator of high-precision converted shear waves in seismic records. Background technique [0002] Deconvolution processing of multi-wave seismic data is an important step in the analysis of multi-wave seismic data. Whether or not a high-precision deconvolution operator can be obtained directly affects the signal-to-noise ratio and resolution of the deconvolution-processed seismic data. [0003] Multiwave seismic data includes longitudinal wave data and converted shear wave data. At present, the deconvolution operator for transforming shear wave data is usually obtained by using the method of obtaining the deconvolution operator of the longitudinal wave data. However, because the inherent dynamic characteristics of converted shear waves are different from those of longitudinal waves, compared with longitudinal waves, con...

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Application Information

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IPC IPC(8): G01V1/28
Inventor 王鸿燕杨海涛王栋王静赵尧符志国谢万学王玉华蔡谦邓雁
Owner GEOPHYSICAL EXPLORATION CO OF CNPC CHUANQING DRILLING ENG CO LTD