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Complex field geological imaging method based on seismic data and electronic equipment

A seismic data and complex domain technology, applied in the field of digital signal processing of seismic exploration, can solve problems such as limited technical means, insufficient mining and utilization of seismic data information, etc.

Active Publication Date: 2020-05-12
北京东方盈科伟业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the mining and utilization of seismic data information by conventional interpretation methods is not sufficient at present, and the main technical means are limited by several sets of mature commercial software products

Method used

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  • Complex field geological imaging method based on seismic data and electronic equipment
  • Complex field geological imaging method based on seismic data and electronic equipment
  • Complex field geological imaging method based on seismic data and electronic equipment

Examples

Experimental program
Comparison scheme
Effect test

application example 1

[0068] The complex-domain geological image method based on seismic data according to the present invention may include:

[0069] Step 1: Obtain the target channel, perform Hilbert transform, and then calculate the analytical signal channel by formula (1), and the center frequency of the analytical information channel is f.

[0070] Step 2: Calculate the complex signal by formula (2) according to the incremental frequency parameter Δf and the analytical signal channel; take the real part of the complex signal as the driving signal channel, that is, the real signal with the center frequency f+Δf, different increments The frequency parameter Δf can obtain different driving signal channels.

[0071] Step 3: Using the cross-correlation driving method, the target channel is driven by the driving signal channel, and the resonance signal channel is obtained by formula (3).

[0072] The amplitude, frequency and phase of the signal are the three elements of conventional seismic imaging...

application example 2

[0077] Figure 2a A schematic diagram showing the seismic imaging results of a certain exploration area according to an embodiment of the present invention, Figure 2b shows according to Figure 2a The schematic diagram of the geological image section obtained by the geological imaging method of the present invention, obviously, Figure 2b A geological image section of a similar geological photo.

application example 3

[0079] Figure 3a A schematic diagram showing the results of seismic imaging according to one embodiment of the present invention, Figure 3b shows according to Figure 3a The schematic diagram of the geological image section obtained by the geological image method of the present invention.

[0080] Take a work area as an example.

[0081] Work area name: AMH3D; Interpretation track length: 0ms-1200ms; Sampling interval: 2ms; Surface element: 25m x 25m.

[0082] Processing parameters of this embodiment:

[0083] 1. Incremental frequency parameters

[0084] The approximate range of the incremental frequency parameter of equation (2) is [-50, 50] Hz.

[0085] 2. Determine the incremental frequency sweep range

[0086] Confirm that the incremental frequency sweep range is [5,15]Hz, the sweep step size is 1Hz, and a total of 11 sweeps are made. The obtained geological image sections are as follows: Figure 3b shown.

[0087] 3. Cross-correlation strategy time window param...

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Abstract

The invention discloses a complex field geological imaging method based on seismic data and electronic equipment. The method comprises the following steps: 1, acquiring a target channel, and carryingout Hilbert transform to obtain an analytic signal channel; 2, for an incremental frequency parameter, calculating a driving signal channel according to the analytic signal channel; 3, driving the target channel through the driving signal channel to obtain a resonance signal channel; 4, performing Hilbert transform on the resonance signal channel, and calculating a resonance scanning result; 5, judging whether the number of processed incremental frequency parameters reaches a set threshold value or not, and obtaining a resonance scanning result corresponding to each incremental frequency parameter; and 6, calculating a geological image single-channel signal according to the resonance scanning result corresponding to each incremental frequency parameter. Through complex field resonance imaging, a geological image profile with finer geological structure information is obtained, and more powerful technical support is provided for data interpretation personnel.

Description

technical field [0001] The invention belongs to the technical field of seismic exploration digital signal processing, and more particularly relates to a complex domain geological image method and electronic equipment based on seismic data. Background technique [0002] The important significance of oil and gas seismic exploration is to obtain information such as underground structural morphology and underground reservoir properties from seismic data to provide a basis for oil and gas development. However, the mining and utilization of seismic data information by conventional interpretation methods is still insufficient, and the main technical means are limited by several sets of mature commercial software products. Therefore, it is necessary to develop a complex-domain geological image method and electronic equipment based on seismic data. [0003] The information disclosed in this Background section is only for enhancement of understanding of the general background of the ...

Claims

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Application Information

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IPC IPC(8): G01V1/34
CPCG01V1/345
Inventor 徐洪斌刘志成
Owner 北京东方盈科伟业科技有限公司