地质科学2011，Vol.46Issue(4)：983-993,11.
海拉尔盆地乌尔逊凹陷下白垩统层序构成样式分析及油气藏预测
Analysis on the sequence components and forecast of hydrocarbon reservoirs of Early Cretaceous of Wuerxun depression in Hailar Basin
摘要
Abstract
Wuerxun depression is one of the main oil and gas exploration and development zones in Hailar Basin. Comprehensive research on sequence architecture and depositional filling of Early Cretaceous shows that filling sequences are controlled by tectonic evolution and have distinct phases. Under the tectonism of the episodic fault-depressing activities and the different activities of synsedimentary fracture etc, the sequence configuration can be divided into three types; steep-slope type, faulted-terrace type and sag type, which control the sediment dispersion process and sand accumulation and play an important role for the sequence architecture and formation and distribution of sedimentary system of Wuerxun depression. Results show that different tectonic units have respective characteristic of the sequence style and depositional system, different types of the sequence pattern also determine different tectonic units with different kinds of reservoirs. The fault controlled steep-slope area mainly develops fault-nose and faults-lithologic reservoirs, faulted-terrace belt in gentle slope area develops fault blocks and faults-lithologic reservoirs, sag belt mainly develops sand lens reservoirs, in addition, the margin of sag belt probably develops fault-lithologic reservoirs.关键词
乌尔逊凹陷/下白垩统/层序构成样式/沉积充填/油气藏Key words
Wuerxun depression/Early Cretaceous/Sequence architecture/Depositional filling/Reservoirs分类
天文与地球科学引用本文复制引用
刘赫,李军辉,张祥国..海拉尔盆地乌尔逊凹陷下白垩统层序构成样式分析及油气藏预测[J].地质科学,2011,46(4):983-993,11.基金项目
中国石油天然气股份有限公司科学研究与技术开发项目(编号:2008E-1209)资助. （编号:2008E-1209）
