Method for improving converted-wave seismic data resolution and velocity inversion method thereof

A seismic data and converted wave technology, applied in seismic signal processing and other directions, can solve problems such as low precision, narrow frequency band range, and low-frequency part retention, and achieve fine inversion results, high-resolution, high-precision converted wave seismic data Effect
CN106443771AActive Publication Date: 2017-02-22BC P INC CHINA NAT PETROLEUM CORP +1
6 Cites 4 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
BC P INC CHINA NAT PETROLEUM CORP
Publication Date
2017-02-22

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The present invention provides a method for improving converted-wave seismic data resolution and converted-wave seismic data high-precision velocity inversion method thereof. The wavelet transform multi-scale information is employed to obtain the frequency data amplitude spectrum requiring frequency prolongation and a curve fitting amplitude spectrum in the wavelet frequency domain, the frequency-broadening operators of the curve fitting amplitude spectrum of the high-frequency logging record amplitude spectrum are obtained to perform frequency-broadening processing of the wavelet domain data in the frequency band range, and the wavelet domain data is subjected to wavelet reverse transformation to a time domain to obtain high-resolution and high-precision converted-wave data; and moreover, and the converted-wave data after the frequency band broadening is subjected to the velocity inversion to obtain finer inversion results. The method for improving converted-wave seismic data resolution and the velocity inversion method thereof can obtain high-resolution and high-precision converted-wave seismic data and can obtain finer inversion results.
Need to check novelty before this filing date? Find Prior Art

Description

Technical field

[0001] The invention relates to the field of oil and gas exploration seismic data processing, in particular to a method for improving the resolution of converted wave seismic data and a method for high-precision velocity inversion of converted wave seismic data. Background technique

[0002] At present, with the continuous deepening of multi-wave seismic exploration, improving the prediction accuracy of oil and gas reservoirs has always been a key research issue in multi-wave exploration. Because the converted waves acquired by multi-wave exploration have limited resolution, narrow frequency bands, and low accuracy, they cannot meet the requirements of the subsequent reservoir prediction to distinguish the minimum thickness of multiple thin layers. Therefore, how to improve the resolution of seismic converted waves is to increase the speed. The key to performance accuracy.

[0003] Deconvolution is a commonly used processing technology to improve the resolution of ...

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