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Ancient landform recovery method based on source-sink system

A kind of paleogeomorphology restoration and paleogeomorphology technology, applied in the field of paleogeomorphology restoration based on the source-sink system, can solve the problems of not considering the denudation area, unable to effectively restore the basement denudation amount of the denudation area and the paleogeomorphology during the deposition period.

Pending Publication Date: 2021-02-05
中海石油(中国)有限公司深圳分公司
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Problems solved by technology

[0006] The above-mentioned methods are mainly aimed at the restoration of the denudation amount and paleogeomorphology of the sedimentary strata, without considering the influence of the denuded area, and have certain limitations, and cannot effectively restore the denuded amount of the basement of the denuded area and the paleogeomorphology of the sedimentary period

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  • Ancient landform recovery method based on source-sink system
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[0035] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described in detail with reference to the accompanying drawings.

[0036] refer to figure 1 , the paleogeomorphological recovery method based on the source-sink system of an embodiment of the present invention may include the following steps:

[0037] S1. Select the area to be restored and determine the geological history period for paleogeomorphology restoration.

[0038] Selected recovery area such as figure 2 The displayed area. Geological historical periods include the Eocene Wenchang period, the upper Wenchang period, the upper Enping period and the lower Enping period.

[0039] It is understandable that the selected area to be restored and the geological history period for paleogeomorphological restoration depend on the specific needs of production, research, and exploration ...

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Abstract

The invention discloses an ancient landform recovery method based on a source-sink system. The ancient landform recovery method comprises the steps that: S1, selecting a to-be-recovered region, and determining a geological history period; S2, dividing source-sink units of a geological history period on the basis of the residual landform; S3, based on a structural evolution rule of the to-be-recovered region, determining a differential settlement rule and a deposition reference surface, and performing differential settlement correction; S4, defining the ranges of a denudation region, an over-stripping region and an over-covering region based on the unconformity interface characteristics of the to-be-recovered region and the seismic facies difference of different lithologies, and performingdenudation amount recovery on the denudation region and the over-stripping region based on the principle of conservation of substances of the source-sink system; and S5, superposing images obtained inthe step S3 and the step S4 to complete recovery of the ancient landform framework. According to the ancient landform recovery method, the denudation region material source and the total material amount are recovered more visually and scientifically, so that ancient landform and prototype basins in the deposition period are established, and guidance is provided for research on denudation and deposition region material distribution, landform evolution, reservoir characteristics, reservoir body distribution and the like.

Description

technical field [0001] The invention relates to the technical field of paleogeomorphology and prototype basin bottom, in particular to a method for restoring paleogeomorphology based on a source-sink system. Background technique [0002] Clarifying the dynamic evolution of provenance through paleogeomorphology restoration is an important field and an effective means of paleogeomorphology research and application. The provenance of the area outside the basin has the characteristics of a single provenance direction, a long geological history period, and simple provenance evolution and transformation. Compared with the provenance outside the basin, the low uplift covered in the later period of the basin may be the provenance area in the early depositional period, and the provenance supply and distribution of the dynamic provenance change with time. Different sequence positions, lake level At different stages of change, the size of the provenance area changed, and at the same t...

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Application Information

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IPC IPC(8): G01V1/28
CPCG01V1/28
Inventor 张向涛邱欣卫雷永昌李敏阙晓铭肖张波
Owner 中海石油(中国)有限公司深圳分公司
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