Wen Z.,Jilin Geological Survey Institute of Jilin Province |
Jiang F.,Jilin Geological Survey Institute of Jilin Province |
Zhong C.,Geological Archives of Jilin Province |
Jiang X.,Jilin Geological Survey Institute of Jilin Province |
And 2 more authors.
Jilin Daxue Xuebao (Diqiu Kexue Ban)/Journal of Jilin University (Earth Science Edition) | Year: 2016
The oil shale deposit is located in the southeast uplift area of Songliao basin, and belongs to a third-class structural unit of Songliao central fault depression in the Jilin-Heilongjiang geosyncline fold system. The studied area was mainly filled with Mesozoic Cretaceous clastic rocks. On the basis of the core observation and “Fischer” oil content test classification, it is concluded that the oil shale developed in dark and brown-black mudstone layers, which mainly distributed in the Qingshankou Formation and the Nenjiang Formation of Cretaceous. The oil shale layers correlation among boreholes and the lateral distribution characteristics show that the oil shale is layered in a large scale, stable distribution, and better continuity. The bulk organic geochemistry data shows the oil yield of oil shale is closely related to organic matter type and total organic carbon content. Meanwhile, oil shale has high ash content, it is low quality oil shale ores. Combining the oil shale features and sedimentary environment, it is concluded that the origin of the oil shale was sapropelic oil shale. © 2016, Science Press. All right reserved.