Method for processing seismic data by using high-precision single-channel spectrum analysis technology

Abstract

The invention discloses a method for processing seismic data by using high-precision single-channel spectrum analysis technology in petroleum geophysical exploration data processing. The method comprises the following steps of: labeling and selecting data, partitioning an analyzed time window segment into data segments, adding linear slopes at two ends of a time window and filling zero to the channel length of the primary data, performing Fourier transformation on the data of the disturbed m time window segments to obtain an amplitude spectrum, storing the amplitude spectrum into a seismic channel, determining an Nyquist frequency, arranging the calculated spectral values into a seismic data format to obtain a data frequency distribution rule, and selecting a processing method and a processing parameter according to the determined data frequency distribution rule to obtain a high-precision stratum section and determine the position of an oil-containing stratum. The method can quickly reflect the frequency characteristics of the seismic data at different processing stages, and can clearly display the problems so that the processing measure has pertinence.

Description

technical field [0001] The invention belongs to petroleum geophysical prospecting technology, and relates to a method for rapidly analyzing data spectrum in high-density seismic prospecting data processing, in particular to a method for processing massive seismic data using single-channel spectrum analysis technology. Background technique [0002] As we all know, in petroleum geophysical exploration technology, improving the accuracy of seismic exploration and solving complex geological problems in continental sedimentary basins is a systematic project, involving many aspects such as acquisition methods, static correction technology, noise suppression technology, and fine imaging technology. High-density spatial sampling technology is a new development direction in the field of seismic exploration. It plays a unique role in improving the signal-to-noise ratio and resolution of data, improving data quality, and obtaining more abundant underground reflection information. Theref...

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Problems solved by technology

[0006] (1) When the amount of data to be processed is large, and the frequency characteristics of the data are different in time and space, the speed of spectrum output in the conventional interactive mode is reduced, which is not conducive to rapid co

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