地球学报Issue(1)：101-110,10.DOI:10.3975/cagsb.2014.01.13
鄂尔多斯盆地延长期湖盆充填类型与优质烃源岩的发育
Lake-basin Filling Types and Development of High Quality Hydrocarbon Source Rocks in Ordos Basin in Late Triassic Yanchang Period
摘要
Abstract
Lake-basin filling types response to the basin structures and plaeoclimate and control the development of high quality hydrocarbon source rocks. Based on comprehensive analysis of the depositional environment of Chang91, Chang73 and Chang72-71 source rocks, the authors recommend a balanced-fill type for these source rocks. However, as the abundance of organic matter and the scale of resource of these source rocks are different, the further subdivision of the balanced-fill type is needed. It is subdivided into delta front-deep lake, purely deep lake and turbidites-deep lake sedimentary systems corresponding to Chang91, Chang73 and Chang72-71 source rocks respectively. A discussion on the forming setting of excellent hydrocarbon source rocks was made. The authors point out that the basin subsidence and the climate controlled the sedimentation and preservation of source rocks, and the primary productivity was closely related to the surrounding volcanic activity and deep fluids. Integrating the relationship of basin and mountain, lake-basin filling types and lithofacies assemblage, the authors provide an ideal model for the development of Chang73 excellent hydrocarbon source rocks. This study emphasizes that the strong dynamic of water (such as turbidity current or delta) might have diluted the basin and embarrassed the enrichment of organic matter, whereas the nutrition elements from volcanic ash or deep fluid might have enhanced the production of organic matter. This understanding gives an example for further study of lake-basin filling types and development of high quality hydrocarbon source rocks in similar continental depression basins.关键词
优质烃源岩/充填类型/火山灰/深部作用/延长期/鄂尔多斯盆地Key words
high quality hydrocarbon source rocks/lake-basin filling types/volcanic ash/deep effects/Yanchang periods/Ordos basin分类
能源科技引用本文复制引用
邱欣卫,刘池洋..鄂尔多斯盆地延长期湖盆充填类型与优质烃源岩的发育[J].地球学报,2014,(1):101-110,10.基金项目
本文由国家自然科学基金项目(编号:90814005 （）
41203043)和国家科技重大专项(编号:2011ZX05001-004)联合资助。 （编号:2011ZX05001-004）
