石油物探2025，Vol.64Issue(2)：353-367,15.DOI:10.12431/issn.1000-1441.2023.0330
珠江口盆地开平凹陷始新统恩平组储层特征及有利储层预测
Reservoir characteristics and favorable reservoir prediction of the Enping Formation in Kaiping Sag,Pearl River Mouth Basin
摘要
Abstract
In order to comprehensively promote the application of deep-water reservoir prediction technology in the Kaiping sag,the Pearl River Mouth Basin,we conduct a study on stratigraphic division and depositional system,together with lithologic and petrophysical properties in the Enping Formation,based on 3D seismic,drilling,and logging data.The log-constrained sparse spike inversion is utilized to determine the spatial distribution of favorable sandstone reservoirs.Combined with the seismic multi-attribute analysis method,multiple attributes with varying sensitivities to seismic information were extracted along the layer.Three attributes with high correlation coefficients were selected for weight fusion.Drilling data reveal that deeply buried Eocene formations in the Kaiping sag consist of interbedded sandstones and mudstones.Sandstones in the Enping Formation have better reservoir properties,i.e.higher porosity and higher permeability,than in the Wenchang Formation.According to sedimentation,reservoir properties,seismic inversion results,and seismic attribute analysis,deltaic sandstones with good continuity and high impedance in the Enping Formation may function as promising reservoir rocks.The northwest of KP11 tectonic zone is predicted to be a promising area for drilling.A favorable drilling well location is proposed aiming to establish a theoretical direction for future oil and gas exploration.关键词
开平凹陷/储层特征/储层预测/约束稀疏脉冲反演/地震属性Key words
Kaiping sag/reservoir characterization/reservoir prediction/constrained sparse spike inversion/seismic attribute分类
地质学引用本文复制引用
姜露珊,王建花,栾锡武,汪俊乾,张会星,金龙,殷鉴,乔江浩..珠江口盆地开平凹陷始新统恩平组储层特征及有利储层预测[J].石油物探,2025,64(2):353-367,15.基金项目
国家自然科学基金项目(92055211,42249801)和中国-东盟海上合作基金项目(12120100500017001)共同资助. This research is financially supported by the National Natural Science Foundation of China(Grant Nos.92055211,42249801)and the China-ASEAN Maritime Cooperation Fund Project(Grant No.12120100500017001). （92055211,42249801）
