沉积与特提斯地质Issue(3)：56-62,7.
白云凹陷北坡珠江组陆架边缘三角洲前缘砂体储层特征及控制因素
Continental shelf margin delta front sandstone reservoirs in the Zhujiang Formation, northern Baiyun depression, Zhujiangkou Basin:Characteristics and controlling factors
摘要
Abstract
The characteristics and controlling factors are dealt with on the basis of thin section identification, scanning electron photomicrographs, mercury injection experiment and physical properties of the continental shelf margin delta front sandstone reservoirs in the Zhujiang Formation, northern Baiyun depression, Zhujiangkou Basin. The sandstone reservoirs dominated by grey medium-to fine-grained lithic sandstones are characterized by relatively low compositional and textural maturity, abundant secondary porosities with minor amount of residural primary intergranular porosity and primary porosity, relatively higher driving pressures and coordination numbers, relatively smaller pore throat sizes and poor sorting, and thus interpreted as the reservoir rocks with the medium to low porosity and medium to low permeability. The sandstone reservoirs are primarily constrained by sedimentary facies and diagenesis. The delta front subaqueous distributary channel microfacies is believed to be most favourable facies zone for the development of the sandstone reservoirs, followed by the delta front channel mouth bar microfacies. The destructive diagenesis such as mechanical compaction and cementation may reduce the porosity and permeability while the constructive diagenesis such as dissolution and cracking may facilitate the improvement of the porosity and permeability of the sandstone reservoirs.关键词
陆架边缘三角洲前缘/储层特征/成岩作用/珠江组/珠江口盆地Key words
continental shelf margin delta front/sandstone reservoir/diagenesis/Zhujiang Formation/Zhujiangkou Basin分类
能源科技引用本文复制引用
刘惟庆,吴伟,林畅松,秦成岗,舒良锋,王雨涵..白云凹陷北坡珠江组陆架边缘三角洲前缘砂体储层特征及控制因素[J].沉积与特提斯地质,2015,(3):56-62,7.基金项目
国家自然科学基金青年基金“利用修正的滨岸上超法分析辽东湾坳陷古近纪湖平面变化”(项目批准号:41102059)、油气资源与探测国家重点实验室开放课题“利用滨岸上超法分析辽中凹陷东营期湖平面变化”(项目批准号:PRP1109) （项目批准号:41102059）
