摘要
通过岩石学、岩石粒度、沉积构造及沉积背景综合分析,确定濮城油田沙三中6-10油组为水下扇沉积,且主要为扇中到扇缘沉积,发育沟道、沟道间、席状砂、泥石流等沉积微相。微相平面分布具有扇形结构特征。在单井微相及微相平面分析基础上,建立了沙三中水下扇沉积模式。对水下扇形成机制进行了讨论,认为构造及沉积地形、气候、基准面变化控制了水下扇形成。
Based on comprehensive analysis of mineralogy, grain sizes, sedimentary structure and depositional setting, the unit 6 - 10 of Es23 (middle 3rd member of Shahe-jie Fm) in Pucheng oilfield are determined to be subaqueous fans, where several microfacies, including channel, interchannel, sand sheet and debris flow, are recognized. The areal distribution of the microfacies has the characteristics of sector configuration. Based on analysis of single well microfacies and their areal distribution, depositional models of subaqueous fan in Es23 are built The genetic mechanism of subaqueous fan is discussed and it is believed that the formation of subaqueous fan is controlled by structure, depositional topography, climate and changes of base-level.
出处
《河南石油》
2005年第6期9-12,共4页
Henan Petroleum
关键词
湖泊
水下扇
沉积模式
形成机制
沙三中
濮城油田
subaqueous fan,depositional model,genetic mechanism, middle 3rd member of Shahejie Fm,Pucheng oilfield
