新疆三塘湖盆地侏罗系流体包裹体研究

THE STUDY OF FLUID INCLUSIONS IN JURASSIC OF THE SANTANGHU BASIN

郝建荣 柳益群 曹青 邢秀娟

Hao Jianrong Liu Yiqun Cao Qing Xing Xiujuan

西北大学 大陆动力学国家重点实验室, 西安 710069 2. 西北大学 地质学系, 西安 710069

State Key Laboratory of Continental Dynamics, Northwest University, Xi'an, Shaanxi 710069, China 2. Department of Geology, Norhtwest University, Xi'an, Shaanxi 710069, China

以新疆三塘湖盆地侏罗系储层中次生流体包裹体研究为例,依据流体包裹体的岩相学、盐度、均一温度以及伴生烃类包裹体等特征,结合盆地热史和烃源岩成熟史研究,认为侏罗系裂缝中的次生包裹体是不同流体来源、不同时期作用的产物,并且侏罗纪末可能存在深部地层高温流体沿裂缝向上运移的热事件.在理清包裹体流体来源的基础上,储层次生流体包裹体不但可以指示油气运移的信息,也可提供地质历史中的热事件信息.

Chosing the Santanghu Basin in Xinjiang as an example,according to secondary fluid inclusions' facieology,salinity,homogeny temperature and character of associated hydrocarbon fluid inclusions in Jurassic reservoir,it is believed that the inclusions in the crack of quartz have formed at different fluids process and of different periods combining with the study of thermal evolution of the basin.The analysis show that there exist a heat event at the end of Jurassic,migrating by cracks from the deep stratum.Accordingly,the fluid inclusions have great significance in analyzing of the information about hydrocarbon migration,at the same time,it can provide heat events in geological history.The fluid inclusions bear the characteristics of multi-origin and multi-period,which are critical in studying the thermal and maturity history of hydrocarbon source rocks in basin.

国家重点基础研究发展规划(973)项目(2003CB214603).

https://doi.org/10.11781/sysydz200604391