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Seismic data filtering method and device

A seismic data and seismic trace technology, applied in the field of geophysical exploration, can solve the problems of single seismic data and low reliability of seismic data

Active Publication Date: 2020-03-10
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Embodiments of the present invention provide a seismic data filtering method and device, to at least solve the technical problem of low reliability of seismic data caused by relatively simple filtering methods for seismic data in the related art

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  • Seismic data filtering method and device

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Embodiment 1

[0053] According to an embodiment of the present invention, a method embodiment of a method for filtering seismic data is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings may be executed in a computer system such as a set of computer-executable instructions, Also, although a logical order is shown in the flowcharts, in some cases the steps shown or described may be performed in an order different from that herein.

[0054] figure 1 is a flowchart of a method for filtering seismic data according to an embodiment of the present invention, such as figure 1 As shown, the filtering method of the seismic data includes the following steps:

[0055] Step S102, acquiring target seismic data, wherein the target seismic data is seismic data that needs to be filtered.

[0056] Step S104, according to the Kalman filtering method, determine the seismic trace transverse filtering mode and the seismic trace longitudinal filtering mode.

[0057...

Embodiment 2

[0077] According to an embodiment of the present invention, an apparatus for filtering seismic data is also provided. It should be noted that the apparatus for filtering seismic data in the embodiment of the present invention can be used to execute the filtering method for seismic data provided by the embodiment of the present invention. The following describes the filtering device for seismic data provided by the embodiment of the present invention.

[0078] Figure 11 is a schematic diagram of a filtering device for seismic data according to an embodiment of the present invention, such as Figure 11 As shown, the filtering device for seismic data includes: a first acquiring unit 1101 , a determining unit 1103 , a constructing unit 1105 and a filtering unit 1107 . The filtering device for the seismic data will be described in detail below.

[0079] The first acquiring unit 1101 is configured to acquire target seismic data, where the target seismic data is seismic data that ...

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Abstract

The invention discloses a seismic data filtering method and device. The method comprises the steps of obtaining target seismic data, and the target seismic data are seismic data needing to be filtered; determining a seismic trace transverse filtering mode and a seismic trace longitudinal filtering mode according to a Kalman filtering mode; constructing a seismic trace target filtering mode according to the seismic trace transverse filtering mode and the seismic trace longitudinal filtering mode, the target filtering mode being a mode of simultaneous filtering of the seismic trace transverse filtering mode and the seismic trace longitudinal filtering mode; and filtering the target seismic data by using the target filtering mode. According to the invention, the technical problem of low reliability of the seismic data caused by a single mode of filtering the seismic data in related technologies is solved.

Description

technical field [0001] The present invention relates to the technical field of geophysical exploration, and in particular, to a method and device for filtering seismic data. Background technique [0002] The seismic data collected in the field are mostly characterized by low resolution and low signal-to-noise ratio, so it is necessary to perform a series of processing on the collected seismic data, such as filtering and deconvolution. However, seismic techniques such as deconvolution and frequency extension are often prone to reduce the lateral continuity and signal-to-noise ratio of seismic data. At present, Kalman filter is a better choice to improve the lateral continuity and signal-to-noise ratio of seismic data. However, in the prior art, Kalman filtering is generally performed in the lateral direction of the seismic data; or Kalman filtering is performed in the longitudinal direction of the seismic data. However, the above two methods have defects in improving the la...

Claims

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Application Information

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IPC IPC(8): G01V1/36
CPCG01V1/364
Inventor 陈刚齐洪岩姚茂敏张吉辉韩宝卢红刚赵春雪赵俊
Owner PETROCHINA CO LTD
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