Shale oil and gas system based on seismic sedimentology theory and identification method thereof

Abstract

The invention provides a shale oil and gas system based on a seismic sedimentology theory. The system comprises a high-precision shale sequence stratigraphic framework construction module, a seismic wavelet phase adjustment module, an isochronous marker bed tracking module, a seismic resolution analysis module, a shale stratum characteristic combined seismic frequency adjustment module, a shale maturity and quality evaluation module, a shale resistivity and speed response relationship module, a total organic carbon content, resistivity and interval transit time module, a wave impedance and total organic carbon content and vitrinite reflectivity relation model module, a seismic parameter screening module, a stratum slicing module, a geological interpretation module and a comprehensive evaluation module. Based on the fact that shale oil and gas are endowed in shale, and the shale has the characteristics of pure quality, compactness and fine particles, it is proposed that in the pure-quality shale, through improvement, enrichment and development of the seismic sedimentology theory and technology, the developed seismic sedimentology technology and seismic data are used for predicting the area, rich in oil and gas, of the shale in the relatively single lithology.

Description

technical field [0001] The invention belongs to the technical field of shale oil and gas exploration, and in particular relates to a shale oil and gas system based on seismic sedimentology theory and an identification method thereof. Background technique [0002] Seismic sedimentology is a discipline that studies stratum lithology, sedimentary origin, sedimentary system and basin filling history through the comprehensive analysis of seismic lithology and seismic geomorphology. This new discipline explores the isochronism and diachronism of seismic reflection, and gradually realizes that seismic reflection does not generally have chronostratigraphic significance, and only a few reflection events (such as the reflection interface near the maximum flood surface) have reliable isochronous significance. The occurrence and isochronism of most seismic reflections are controlled by the seismic data frequency. [0003] Seismic sedimentology theory and technology, sedimentary system ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the above-mentioned defects in the prior art, and to provide a shale oil-gas system based on seismic sedimentology theory and its identification method, based on the occurrence of shale oil and gas in mud shale, and mud shale has pure quality, The characteristics of compact and fine-grained, relatively single lithology, and the "monolithic" situation, it is proposed that in the pure mud shale, through the improvement, enrichment and development of seismic sedimentology theory and technology, the developed seismic sedimentology technology and seismic data to predict hydrocarbon-rich areas in shale relatively monotonous lithology

Images