Fracture detection method and system based on time-frequency decomposition
A time-frequency decomposition and detection method technology, applied in the field of oil and gas geophysics, can solve the problems of low signal-to-noise ratio or resolution of fracture detection results, and achieve the effect of avoiding cumbersome comparative analysis, less storage requirements and reducing workload.
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[0028] The principles and features of the present invention will be described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.
[0029] At present, the main technologies for detecting faults or cracks include fracture detection technology based on geometric attributes and fracture detection technology based on spectral decomposition.
[0030] Among them, the geometric attributes in the fault detection technology based on geometric attributes will be affected by the quality of seismic data during the calculation process. Seismic data with poor data quality will lead to low signal-to-noise ratio or resolution of fault detection results, and even exist some illusions. Therefore, some necessary denoising processing is required when performing discontinuity detection.
[0031] At the same time, the inclination of the formation is also reflect...
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