Three-dimensional earthquake image full-layer automatic tracking method based on coupling search

Abstract

The invention discloses a three-dimensional earthquake image full-layer automatic tracking method based on coupling search. The method comprises the following steps: preprocessing three-dimensional earthquake image data, extracting a layer vertical distribution characteristic from the three-dimensional earthquake image data, carrying out the coupling search according to the layer vertical distribution characteristic to generate data blocks, and based on amplitude guiding, connecting the data blocks so as to realize full-layer automatic tracking of a three-dimensional earthquake image. According to the invention, the layer vertical distribution characteristic is extracted from layers adjacent to each other in multiple vertical directions, parallel tracking of the layers in the three-dimensional earthquake image is realized through performing the coupling search on the layer vertical distribution characteristic, and mutual relations between the layers are fully utilized, such that the correctness of a layer tracking result is ensured theoretically and methodologically, the tracking efficiency is also improved, and the efficiency and the effect of earthquake interpretation work are improved; and manual intervention is unnecessary, and full-layer automatic tracking of a large-scope work area can be realized.

Description

technical field [0001] The invention belongs to the technical field of seismic image horizon tracking, and in particular relates to an automatic tracking method for all horizons of a three-dimensional seismic image based on matching search. Background technique [0002] Horizontal tracing is a very important part of seismic image interpretation, and it is also a basic work in seismic image interpretation. At present, the most widely and most effective method used in oil exploration is seismic exploration. Seismic exploration is to excite seismic waves through explosions and other means. Due to the change of wave impedance in different geological structures, sound waves will be affected by rock formations when passing through different geological structures. The reflection of the ground produces reflected waves, which go back up to the ground and are accepted and recorded by the receiving sensors on the ground. This is the most primitive seismic record. The seismic records c...

AI Technical Summary

Problems solved by technology

The traditional level interpretation has always relied on manual interpretation, which has a large workload and takes a long time, and the manual interpretation is affected by the subjective consciousness of the interpreter and has poor verifiability

The existing automatic tracking technology can only meet the requirements of structural interpretation when the stratigraphic structure is relatively simple, and cannot explain complex geological structures

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