Partition denoising method and device based on near-surface type

A near-surface, type-of-type technology, applied in the directions of measuring devices, seismology, seismic signal processing, etc., can solve the problems of heavy workload, loss of significant wave information, and low work efficiency, so as to protect against loss and improve denoising efficiency and the effect of the denoising effect

Pending Publication Date: 2022-06-03
BC P INC CHINA NAT PETROLEUM CORP +1
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Problems solved by technology

In fact, the appearance of surface waves and shallow refracted waves, which are the most influential among various interference waves, has a great correlation with the near-surface situation, and the same denoising method and denoising method are used for all original single shots Firstly, the workload is large and the work efficiency is low, and secondly, while the interference is removed, part of the effective wave informat

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  • Partition denoising method and device based on near-surface type
  • Partition denoising method and device based on near-surface type
  • Partition denoising method and device based on near-surface type

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[0046] In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments These are some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0047] The present invention provides an embodiment of a method for denoising based on near-surface type partitions, see figure 1 , the denoising method based on near-surface type partitions specifically includes the following contents:

[0048] S101: Obtain the near-surface type of the work area where the seismic data is collected...

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Abstract

The invention provides a partition denoising method and device based on near-surface types. The method comprises the steps that the near-surface types of a work area for seismic data acquisition are acquired, and geodetic coordinates corresponding to all the near-surface types are determined; determining a near-surface type corresponding to each shot point according to geodetic coordinates of the shot points in the seismic data acquisition work area; and determining a denoising mode and a denoising parameter of each near-surface type, and performing partition denoising based on the denoising mode and the denoising parameter. According to the invention, effective wave information can be protected from loss while interference is removed, so that the de-noising efficiency and the de-noising effect are improved.

Description

technical field [0001] The invention relates to the technical field of seismic exploration, in particular to a method and device for denoising based on near-surface type partitions. Background technique [0002] In the original single shot data obtained by seismic acquisition, there are various types of interference waves such as surface waves, shallow refracted waves, acoustic waves, outliers, and random noises, among which the most important are surface wave interference and shallow refracted waves. The existence of these interferences seriously reduces the signal-to-noise ratio of seismic data, and has a great impact on seismic data processing such as deconvolution, velocity analysis, stacking and migration, and must be removed before seismic data processing such as deconvolution. [0003] The denoising technology in the process of conventional seismic data processing is mainly based on the characteristics of various interfering waves in amplitude, frequency, apparent vel...

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Application Information

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IPC IPC(8): G01V1/30G01V1/36
CPCG01V1/306G01V1/364G01V2210/324Y02A90/30
Inventor 晏丰杨建涛王伟
Owner BC P INC CHINA NAT PETROLEUM CORP
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