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Method for recovering depositional sequence prototype section

A technology of sedimentary sequence and profile, applied in the field of restoring the original profile of the sedimentary sequence, can solve the problem of difficulty in observing the sequence stratigraphic structure, and achieve the effect of clear inner structure, prominent content, and improved display.

Inactive Publication Date: 2014-07-02
CHENGDU UNIVERSITY OF TECHNOLOGY
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Problems solved by technology

[0007] The purpose of the present invention is to provide a method for restoring the original profile of the sedimentary sequence, aiming to solve the problem of difficult observation of the damaged sequence stratigraphic structure buried in the middle and deep layers

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  • Method for recovering depositional sequence prototype section
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Embodiment Construction

[0031] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0032] Such as Figure 1~2 As shown, among them, figure 1 It is a flow chart of the steps of an embodiment of the method for restoring the original profile of the sedimentary sequence in the present invention; figure 2 It is a flow chart of restoring the original profile of sedimentary sequence by the seismic line drawing method in the embodiment of the present invention.

[0033] A method for recovering the original profile of a sedimentary sequence, comprising the following steps:

[0034] S1. Select a typical seismic section;

[0035] In step S1, based on basin seismic stratigraphic interpr...

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Abstract

The invention provides a method for recovering a depositional sequence prototype section. Through sectional line drawing, splicing and combing of seismic reflection lineups, an upper super layer or a filling and supplementing interface serves as a horizontal reference layer, depositional environment information obtained by analyzing seismic facies is combined, and the continuing trend of a line drawn stratum is adopted, so that a depositional sequence is recovered to be at the depositional stage state. Through the sectional line drawing, splicing and combing of the seismic reflection lineups, namely reassembly, the sequence prototype section technology is obtained and named as the depositional sequence prototype section recovering technology through the seismic line drawing method. Through recovery of the depositional sequence prototype, the display degree of seismic data is improved greatly through arrangement of the stratum structure, the internal structure of a depositional system is clearer, and content needing displaying is more prominent.

Description

technical field [0001] The invention belongs to the technical field of geological structure research, and in particular relates to a method for restoring the original profile of sedimentary sequences. Background technique [0002] The theory of sequence stratigraphy is a new discipline born in the 1980s, known as the second geoscience revolution (the first was the birth of the theory of plate tectonics). It mainly studies the stratigraphic structure and the relationship between facies in the chronostratigraphic framework. As the basic working method of oil and gas exploration, it has been widely used in oil and gas exploration, especially in the prediction of oil and gas reservoirs. [0003] In previous studies, the stratigraphic structure and the relationship between facies in this chronostratigraphic framework were mainly displayed through undeformed shallow seismic sections or local seismic sections. For most sedimentary sequences whose burial depth is in the middle-deep...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/28
Inventor 徐国强庞雄胡琏李小刚左银辉
Owner CHENGDU UNIVERSITY OF TECHNOLOGY
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