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Interlayer multiple prediction method and device

An interlayer multiple wave and prediction method technology, applied in the field of petroleum exploration, can solve the problem that the SRME method cannot achieve prediction, and achieve the effect of improving the accuracy rate and the suppression accuracy.

Pending Publication Date: 2022-07-22
CHINA OILFIELD SERVICES
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Problems solved by technology

However, for interlayer multiples, the SRME method cannot predict

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  • Interlayer multiple prediction method and device

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[0026] Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that the present invention will be more thoroughly understood, and will fully convey the scope of the present invention to those skilled in the art.

[0027] Figure 1A A schematic flowchart of an inter-layer multiple prediction method according to an embodiment of the present invention is shown. like Figure 1A As shown, the method includes the following steps:

[0028] Step S101: Acquire the two-way travel time reflection time of the seismic wave at each generating horizon of the interlayer multiples according to the single shot seismic data including the interlayer multiple...

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Abstract

The invention discloses an interlayer multiple prediction method and device. The method comprises the following steps: according to single-shot seismic data containing interlayer multiples, obtaining two-way travel time reflection time of seismic waves at each generation horizon of the interlayer multiples; for a to-be-predicted detection point in the single shot, calculating the detection point distance between the to-be-predicted detection point and any detection point in the single shot, and calculating the propagation double-pass travel time of the seismic wave propagating between the layers from any detection point in the single shot to the to-be-predicted detection point according to the double-pass travel time reflection time and the detection point distance of each generation layer; and predicting an interlayer multiple result corresponding to the to-be-predicted detection point according to the propagation two-way travel time and the seismic trace data received by all the detection points in the single shot. Therefore, the interlayer multiples formed between the strong reflection layers can be accurately predicted, the interlayer multiples can be accurately suppressed based on the result of the interlayer multiples, the suppression accuracy is improved, and the accuracy and precision of the correlation analysis result based on the suppressed seismic data are higher.

Description

technical field [0001] The invention relates to the technical field of petroleum exploration, in particular to an interlayer multiple wave prediction method and device. Background technique [0002] The problem of multiples has always been a difficult point in marine seismic data processing, especially for interlayer multiples. Multiples can reduce the fidelity and reliability of seismic imaging. Multiple wave suppression is very important for accurate migration velocity analysis, complex geological structure imaging, fine characterization of wave group characteristics, and small fault imaging. [0003] At present, the SRME method is mainly used to predict the multiples of seismic data. The two-dimensional and three-dimensional SRME techniques are widely used in practical data processing, mainly to predict the multiples related to the free surface, that is, the water surface. However, for interlayer multiples, the SRME method cannot achieve prediction. SUMMARY OF THE INV...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/28
CPCG01V1/28
Inventor 徐强王征董水利焦叙明王志亮王炜王海昆李江李永超周秘
Owner CHINA OILFIELD SERVICES
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