Waveform indication inversion based beach body prediction method

Abstract

The invention provides a waveform indication inversion beach body prediction method. The prediction method comprises: acquiring seismic migration data, seismic horizon data, drilling data and loggingdata; acquiring an accurate time-depth relationship by using a well-seismic calibration method, and converting a depth domain logging curve into a time domain logging curve; analyzing and obtaining asensitive time domain logging curve, and obtaining an initial frame model through the sensitive time domain logging curve; analyzing and obtaining inversion parameters suitable for the beach body prediction, and obtaining inversion result data body through the seismic migration data and the initial frame model; obtaining a response range corresponding to the beach body through the sensitive time domain logging curve, and extracting data representing the beach in the inversion result data body according to the inversion result data body and the corresponding response range of the beach body, and obtaining the beach prediction result. The method according to the invention can predict the beach body more accurately, and can play an important guiding significance for reservoir and oil and gasprediction.

Description

technical field [0001] The invention belongs to the technical field of seismic data interpretation, and more specifically relates to a beach body prediction method based on waveform indication inversion. Background technique [0002] Shoal bodies are favorable oil and gas reservoirs. Seismic data can be used to describe the scale and spatial distribution of shoal bodies, and their accurate division is of great significance for oil and gas exploration. [0003] Traditional beach body prediction mostly adopts qualitative manual identification methods. With the development of science and technology and the continuous improvement of seismic data acquisition technology, the information contained in seismic data is more abundant, and seismic attribute analysis methods are continuously applied to beach body prediction. middle. On the seismic profile, the shoal body is mostly characterized by stratum thickening and wave peak reflection at the bottom of the shoal body. At this stage...

AI Technical Summary

Problems solved by technology

For example, the purpose of the present invention is to solve the problem that the traditional qualitative division of the horizontal boundary of the beach body cannot effectively identify the boundary of the beach body in the case of vertical overlapping of multiple beach bodies, resulting in low accuracy of interpretation results and strong multi-solution problems

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