A correction method and processing terminal for two-dimensional survey line seismic data closure error

Abstract

The present invention relates to a correction method and a processing terminal for two-dimensional survey line seismic data closure difference. The method includes the following steps: Step 1: Obtain two-dimensional survey line seismic data, and sort the two-dimensional survey lines according to construction characteristics, The sorting of 2D survey lines with the same construction features is the same; Step 2: According to the sorting results, group all survey lines so that the 2D survey lines of the same group do not intersect, and the 2D survey lines of different groups intersect, so that Obtain several groups of survey lines; Step 3: Calculate the correction amount between the current group of survey lines and the next group of survey lines, and perform corrections between the current group of survey lines and the next group of survey lines according to the correction amount. Groups of measuring lines are merged into the same group of measuring lines, and as the current group of measuring lines, continue to be calibrated with the next group of measuring lines, and the calibration is completed in sequence. The invention has high efficiency and precision in eliminating closure error, can automatically correct at low cost, and is especially suitable for correction of closure error of a large amount of seismic data.

Description

technical field [0001] The invention relates to the technical field of seismic data closure error correction, in particular to a correction method and a processing terminal for two-dimensional survey line seismic data closure error. Background technique [0002] In seismic interpretation work, it is necessary to draw horizon lines and faults on the seismic section measured by the survey line, that is, it is necessary to draw lines on each seismic section, and the result of the line drawing includes xyz data in the triaxial direction, The xy data is the position information of the plane where the survey line is located, and the z data is the longitudinal value on the corresponding plane (time value in the time domain or depth value in the depth domain). After the interpretation data of the same horizon in different seismic sections are gridded, a variety of industrial maps with production guidance can be produced, such as structural maps and reservoir distribution maps. [0...

AI Technical Summary

Problems solved by technology

[0005] In view of the deficiencies in the prior art, one of the purposes of the present invention is to provide a method for correcting the closure error of two-dimensional survey line seismic data, which can solve the problem of low efficiency of closure error correction;

[0006] The second object of the present invention is to provide a processing terminal, which can solve the problem of low efficiency of misclosure correction;

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