石油勘探与开发2026，Vol.53Issue(1)：130-142,13.DOI:10.11698/PED.20250540
珠江口盆地白云凹陷古近系恩平组源—汇系统动态恢复
Dynamic reconstruction of the source-to-sink system of the Paleogene Enping Formation in the Baiyun Sag,Pearl River Mouth Basin,China:Insights from stratigraphic forward modeling
摘要
Abstract
Traditional source-to-sink analyses cannot effectively characterize deep-time sedimentary processes involving multiple sediment sources and the spatiotemporal evolution of sediment contributions from different sources.In this study,a dynamic,quantitative source-to-sink analysis approach using stratigraphic forward modeling(SFM)is proposed,and it is applied to the Paleogene Enping Formation in the Baiyun Sag,Pearl River Mouth Basin.The built-in spatiotemporal provenance tagging of the model assigns a unique time-source label to sediments from each provenance,making each source's contribution identifiably"labeled"in the simulated formation,and thus enabling a direct precise tracking and high spatiotemporal resolution quantification of such contributions.Five pseudo-wells(from proximal to distal locations)in the Baiyun Sag were analyzed.The simulation results quantitatively represent the varied proportion of contribution of each source at different locations and in different periods and verify the proposed approach's operability and accuracy of the proposed approach.The simulated 3D deposit distribution shows a high agreement with the measured stratigraphic data,validating the model's reliability.Results reveal significant spatio-temporal changes in the Enping sedimentary system.In the late stage of Enping Formation deposition,a distal source supply from the northern part of the sag became dominant,the depocenter migrated northward to the deepwater area,and large-scale deltaic sand bodies extensively progradating into the sag were formed.The modeled 3D deposit distribution indicates that extensive high-quality reservoir sandstones are likely present across the deepwater area of the Baiyun Sag,which are identified as key exploration targets.Compared to traditional static approaches,the SFM-based dynamic simulation markedly enhances the spatiotemporal resolution of source-to-sink analysis and quantitatively captures the sedimentary system's responses to tectonic activity,base-level fluctuations and other external drivers.The proposed approach provides a novel quantitative framework for investigating complex,deep-time,multi-source systems,and offers an effective tool for reservoir prediction and hydrocarbon exploration planning in under-explored deepwater areas.关键词
源—汇系统/地层正演模拟/储层预测/深水油气勘探/白云凹陷/珠江口盆地/古近系恩平组Key words
source-to-sink system/stratigraphic forward modeling/reservoir prediction/deepwater hydrocarbon exploration/Baiyun Sag/Pearl River Mouth Basin/Paleogene Enping Formation分类
能源科技引用本文复制引用
高建磊,刘可禹..珠江口盆地白云凹陷古近系恩平组源—汇系统动态恢复[J].石油勘探与开发,2026,53(1):130-142,13.基金项目
国家自然科学基金"特提斯构造域中东部典型前陆盆地形成演化机制与油气富集效应"(92055204) （92055204）
中国科学院"智能导钻"A类先导项目(XDA14010401) （XDA14010401）
中国海洋石油集团有限公司"白云凹陷古近系油气富集规律及有利区带优选研究"(CCL2021SKPS0118) （CCL2021SKPS0118）
