Method and device for suppressing coal seam shielding effect in seismic profile data

A technology of seismic profile and shielding effect, applied in the field of seismic exploration data processing, can solve problems such as affecting the accuracy of final results, reducing the accuracy of suppressing results, and reliability to be verified, etc., to achieve a simplified data processing process, improve user experience and operation. easy effect

Active Publication Date: 2019-02-15
BC P INC CHINA NAT PETROLEUM CORP +1
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Problems solved by technology

[0005] There are at least the following problems in the prior art: In the method adopted in the prior art, there are many factors that affect the suppression result, such as the decomposition method, wavelet shape, and the influence of the selection of the reconstruction frequency band range, which are likely to affect the final result In this way, due to the change of objective factors and subj

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  • Method and device for suppressing coal seam shielding effect in seismic profile data
  • Method and device for suppressing coal seam shielding effect in seismic profile data
  • Method and device for suppressing coal seam shielding effect in seismic profile data

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Embodiment Construction

[0051] Embodiments of the present application provide a method and device for suppressing the shielding effect of coal seams in seismic profile data.

[0052]In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described The embodiments are only some of the embodiments of the present application, but not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0053] figure 1 It is a method flow chart of an embodiment of a method for suppressing the coal seam shielding effect in seismic section data described in this application. Although the p...

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Abstract

The embodiments of the application disclose a method and apparatus for suppressing the shielding effects of a coal bed in seismic profile data. The method includes the following steps: performing wave impedance inversion on the seismic profile data, determining the range of the distribution of the coal bed and the ranges of the upper and lower layers of the coal bed; simulating a geological structure model; performing forward-modeling on the geological structure model to obtain the seismic profile data which only reflects the response of the coal bed; in the seismic profile data, subtracting the seismic profile data which only reflects the response of the coal bed to obtain the seismic profile data having the shielding effects of the coal bed suppressed. The apparatus includes a data acquisition module, a data processing module and a data output module. According to the embodiments of the invention, the method and the apparatus can effectively suppress the shielding effects of the coal bed, reduce errors and makes the suppression result more real and reliable.

Description

technical field [0001] The present application relates to the technical field of seismic exploration data processing, in particular to a method and device for suppressing the shielding effect of coal seams in seismic section data. Background technique [0002] In oil exploration, the most commonly used seismic exploration technology is to search for oil and gas resources through the law of seismic wave propagation in underground media. The energy strength of seismic signals is an important response characteristic of different lithologies or reservoirs. The energy strength of the seismic signal depends on the reflection coefficient of the medium above and below the formation, and the reflection coefficient depends on the difference in impedance between the upper and lower medium. The greater the difference in impedance (impedance is equal to the product of formation velocity and density), the greater the reflection coefficient. Therefore, it can be simply understood as The g...

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Application Information

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IPC IPC(8): G01V1/28
CPCG01V1/28G01V2210/40G01V2210/70
Inventor 朱兴卉杨平丁博钊杨沛王亚静范畅
Owner BC P INC CHINA NAT PETROLEUM CORP
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