摘要
综合野外露头、钻井剖面、地层对比室内编图,研究了鄂尔多斯盆地中南部中下侏罗统沉积特征,探讨了沉积微相与油藏聚集关系,认为侏罗系油藏受到了沉积前古地貌和沉积相及其组合条件控制,是古地貌、岩性控制的油藏类型。探讨了储集体成因类型,认为今后油气勘探应主要选择侵蚀河河谷古地貌边缘,以古河道边缘、边滩和分流河道发育的地带为重点,同时必须考虑盖层发育条件好的地区为首要勘探区块,另外还应该重视不整合面上的冲积河谷充填形成的厚层粗碎屑沉积储层。
Based on the synthetic study of field outcrops, drilling section data, indoor drawn charts, and data of stratigraphic correlation, the authors discuss the relationship of the different sedimentary facies with oil-gas accumulation of the Lower and Middle Jurassic Fuxian Formation and Yan’an Formation in Ordos Basin. The result shows that the oil reservoir is closely related with palaeogormorphy and sedimentary facies. At the same time, the paper proposes that in future, people should select the margin of palaeogormphy and old stream channel, point bar and distributary channel as main exploration regions. In addition, people should also notice the reservoir of rudaceous rocks due to alluvial vallay on the surface of uncomformity.
出处
《成都理工大学学报（自然科学版）》
CAS
CSCD
北大核心
2005年第3期246-251,共6页
Journal of Chengdu University of Technology: Science & Technology Edition
基金
国家重点基础研究发展计划(973计划)项目(2003CB214601)
关键词
鄂尔多斯盆地
侏罗系
富县组
延安组
储层成因类型
Ordos Basin
Jurassic
Fuxian Formation
Yan’an Formation
sedimentary facies
reservoir genetic type
