柴达木盆地西南区第三纪地层对比与划分

TERTIARY STRATIGRAPHIC CORRELATION AND SUBDIVISION IN THE SOUTHWESTERN QAIDAM BASIN

柴达木盆地西南区是青海油田的主要产油区,该区第三纪地层对比划分一直没有统一,从而导致区域性勘探难度增加,影响该区的勘探进程和生产工作。在前人研究的基础上,以层序地层学为指导综合运用岩性、电性、古生物和地震等资料,通过对研究区单井资料的分析和对区域地层特征的研究,得出了柴西南区各地层层序内部特征与层序界面特征,从而建立了柴西南区统一的地层对比与划分标准。

The southwestern Qaidam Basin is a major oil-producing region in the Qinghai Oilfield. The stratigraphy of the Tertiary reservoir strata in the SW Qaidam Basin has not been standardized, thus hampering petroleum exploration. Based on previous work and synthesizing lithostratigraphic, well log, paleontological, and seismic data, we propose a sequence stratigraphic framework for the Tertiary of SW Qaidam Basin, with the goal to provide a standard for regional stratigraphic subdivision and correlation.