Processing method and processing system for earthquake strong amplitude abnormity

Abstract

The invention discloses a processing method and a processing system for earthquake strong amplitude abnormity. The processing method comprises the following steps: respectively extracting earthquake wavelets of a stable sedimentary stratum on a strong amplitude abnormity interface, earthquake wavelets of a stable sedimentary stratum on a strong amplitude abnormity interface and earthquake waveletsof a stable sedimentary stratum on a strong amplitude abnormity interface; obtaining an average reflection coefficient body; acquiring the seismic wavelets of the stable sedimentary strata on the high-amplitude abnormal interface and average wavelets of seismic wavelets of the stable sedimentary strata on the high-amplitude abnormal interface; and based on the average reflection coefficient bodyand the average wavelet, obtaining seismic data for eliminating strong amplitude abnormity. According to the method, the seismic wavelets of the high-amplitude abnormal interface and the upper and lower stable sedimentary stratums are extracted, the seismic data with the high-amplitude abnormality eliminated are obtained through convolution of the average reflection coefficient body and the seismic wavelets of the stable sedimentary stratums, effective signals cannot be lost, and then the correction result is improved.

Description

technical field [0001] The invention belongs to the field of petroleum exploration, and in particular relates to a processing method and a processing system for earthquake strong amplitude anomalies. Background technique [0002] Generally, seismic amplitude anomaly correction is mostly based on signal processing methods, in the process of signal processing, it is easy to lose effective signals and introduce more noise, resulting in inaccurate correction results. Therefore, there is a special need for a method that prevents effective signal loss from the processed seismic data, thereby improving the correction result. Contents of the invention [0003] The purpose of the present invention is to propose a processing method and processing system for seismic strong amplitude anomalies, which prevent the processed seismic data from losing effective signals and improve the correction results. [0004] According to one aspect of the present invention, a processing method for se...

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Problems solved by technology

[0002] Generally, seismic amplitude anomaly correction is mostly based on signal processing methods. During signal processing, it is easy to lose effective signals and introduce more noise, resulting in inaccurate correction results.

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