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Secondary wave attenuation processing method and device

A processing method and processing device technology, applied in the field of petroleum exploration, can solve the problems of low-frequency effective component loss in deep formations, difficulty in discrimination and evolution by processing interpreters, etc., and achieve clear pinch-out points of formations, clear reflection structures, and improve accuracy Effect

Active Publication Date: 2018-04-20
BC P INC CHINA NAT PETROLEUM CORP +1
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Problems solved by technology

[0003] In the existing technology, it is difficult to take targeted measures due to the lack of understanding of the regional geological background by the processing personnel
Moreover, in the processing flow of the existing technology, such as: frequency-increasing processing, it is easy to make these low-frequency continuous arrivals evolve into high-frequency noise, and the phenomenon of cross-layering with the real formation makes it more difficult for processing interpreters to distinguish
Or the overall low-frequency filtering of these low-frequency noises can achieve a certain attenuation effect, but it is easy to cause loss of low-frequency active components in deep formations, so the two methods cannot achieve the purpose of attenuating continuous wave noise and retaining effective signals.

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Embodiment Construction

[0058] 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.

[0059] In the prior art, well logging technology and seismic data can usually be used for oil and gas exploration. Specifically, according to the seismic data and well logging data, the profile of the seismic wave can be obtained, and the geological structure can be analyzed according to the profile for oil and gas exploration. However, ...

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Abstract

The invention provides a secondary wave attenuation processing method and a secondary wave attenuation processing device. The secondary wave attenuation processing method comprises the steps of: identifying secondary wave data in seismic data to be analyzed according to logging data, geological stratification data and seismic materials; picking up a target position according to the secondary wavedata; establishing a stratigraphic model according to the target position and the secondary wave data; performing noise prediction processing according to the stratigraphic model to obtain predicted noise data; matching the predicted noise data with the seismic data to be analyzed to obtain matched noise data; and performing secondary wave noise attenuation processing according to the seismic datato be analyzed and the matched noise data, so as to obtain noise attenuation seismic data. By utilizing the secondary wave attenuation processing method and the secondary wave attenuation processingdevice in the invention, the secondary wave noise in the seismic data is attenuated, and the precision of seismic data processing and interpretation is improved.

Description

technical field [0001] The application belongs to the technical field of petroleum exploration, and in particular relates to a treatment method and device for attenuation of subsequent arrival waves. Background technique [0002] In the prior art, well logging technology and seismic data can be used for oil and gas exploration. Specifically, according to the seismic data, the section diagram of the seismic wave can be obtained, and the geological structure can be analyzed according to the section diagram, and oil and gas exploration can be carried out. Through the processing and interpretation of seismic data from different basins, it is found that in the middle of the original seismic data, in the stratum underlying the strong wave impedance interface, there is often a set of seismic waves with the same occurrence as the strong interface reflection strata, lower frequency and stronger amplitude. The seismic wave is generated by the arrival wave, and the seismic wave brough...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/36G01V1/28
CPCG01V1/282G01V1/36G01V1/364G01V2210/32G01V2210/324
Inventor 王勇王学军赵建章黄莉莉王英会
Owner BC P INC CHINA NAT PETROLEUM CORP
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