一种基于下游沉积体几何属性定量恢复上游物源区古地貌的方法

By measuring the geometric properties of the sedimentary area to reconstruct the paleogeography of the source area, the problem of multiple solutions in the paleogeography reconstruction of the source area under strong erosion in the existing technology has been solved, and quantitative and accurate paleogeography reconstruction results have been achieved.

CN122049026BActive Publication Date: 2026-07-17SANYA MARINE OIL & GAS RESEARCH INSTITUTE NORTHEAST PETROLEUM UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SANYA MARINE OIL & GAS RESEARCH INSTITUTE NORTHEAST PETROLEUM UNIVERSITY
Filing Date
2026-04-17
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing paleogeographic restoration methods for source areas cannot obtain reliable initial geomorphological parameters during periods of severe erosion or erosion, resulting in results that are highly dependent on assumptions and have multiple interpretations, making quantitative restoration difficult.

Method used

By measuring the geometric properties of the sedimentary zone, such as slope and thickness, and utilizing the response relationship between the sedimentary zone and the source zone, a method for paleogeographic reconstruction of the source zone is established. This includes identifying deltaic sedimentary bodies, measuring key geometric parameters, and calculating the area, depth, and slope ratio of the source zone using regression formulas.

Benefits of technology

It enables quantitative reconstruction of paleogeography in source areas under conditions of intense erosion. The results are accurate and easy to obtain, and are applicable to source-sink systems at different scales.

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Abstract

本发明提出一种基于下游沉积体几何属性定量恢复上游物源区古地貌的方法。该方法选取具有典型源—汇耦合关系的现代湖盆或扇三角洲体系，获取数字高程模型和浅水地形数据，划分源区与汇区；在源区测量坡度、集水面积及汇流主沟长度等参数，在汇区测量扇三角洲顶积层、前积层和底积层的长度、坡度及沉积体总高差等几何属性；基于现代样本数据，采用统计回归方法建立沉积体几何属性与源区地貌参数之间的定量关系模型。随后对目标地层沉积体进行几何参数测量，并代入模型恢复古物源区的面积、泓深和坡度分布。本方法以沉积体几何属性为核心约束，对高品质地震资料依赖度低，参数获取简便，结果可重复性强，可用于湖盆演化重建、砂体预测及油气勘探。
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Citation Information

Patent Citations

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  • Ancient landform quantitative characterization method and device and storage medium

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