海相油气地质2024，Vol.29Issue(2)：179-187,9.DOI:10.3969/j.issn.1672-9854.2024.02.006
珠江口盆地惠州北凹珠海组、珠江组储层发育特征及主控因素
Characteristics and main controlling factors of the reservoirs of Zhuhai Formation and Zhujiang Formation in the northern Huizhou Sag,Pearl River Mouth Basin
摘要
Abstract
Huizhou Sag is an important place for crude oil production in the Zhuyi Depression.For a long time,research has been mainly focused on southwestern Huizhou Sag,whereas the study on northern Huizhou Sag is relatively weak and lacks data support,so the northern Huizhou Sag is still in the early stage of exploration.To promote the oil and gas exploration process in northern Huizhou Sag,the characteristics and development controlling factors of reservoirs in Zhuhai Formation and Zhujiang Formation in northern Huizhou Sag were systematically studied by using thin section,grain size analysis,scanning electron microscopy,zircon dating,reservoir properties and other data.The results show that the reservoir sandstone of Zhujiang Formation and Zhuhai Formation in the northern Huizhou Sag is mainly composed of medium to coarse grained quartz sandstone from delta front channels,with high compositional and structural maturity and low argillaceous content.Pores in the sandstone are dominated by primary intergranular pores,locally enriched with dissolution pores and kaolinite micropores.This sandstone has high porosity,and the maximum profitable depth is about 3 800 m.The reservoir quality of Zhujiang Formation and Zhuhai Formation in northern Huizhou Sag is mainly controlled by three factors:high-quality parent rocks,favorable sedimentary facies and constructive diagenetic process.The high-quality metamorphic and intrusive parent rocks in the South China block lead to high quartz content in the sandstone,laying the foundation for the development of high-quality reservoirs.The fluvial energy of delta front channels is high,resulting in the deposition of coarse grained sandstone,with low clay content and the best reservoir properties.Dissolution,as constructive diagenesis,can increase porosity,therefore increase reserves.关键词
储层特征/主控因素/珠海组/珠江组/惠州北凹/珠江口盆地Key words
reservoir characteristics/main controlling factors/Zhuhai Formation/Zhujiang Formation/northern Huizhou Sag/Pearl River Mouth Basin分类
能源科技引用本文复制引用
张彦振,覃军,蒋一鸣,姜勇,刘培,王辉,常文琪..珠江口盆地惠州北凹珠海组、珠江组储层发育特征及主控因素[J].海相油气地质,2024,29(2):179-187,9.基金项目
本文受中国海油"十四五"重大科技项目"近海重点潜在富烃洼陷评价技术"(编号:KJGG2022-0301)资助 （编号:KJGG2022-0301）
