Characteristics And Utilization Of Oil Shale In Naiman Banner,Inner Mongolia

The research area is located 130km east of Chifeng City,Inner Mongolia Autonomous Region,37km north of Beipiao City,Liaoning Province,and 75km west of Fuxin City.It spans the southwest of Tongliao City in Inner Mongolia and north of Beipiao City in Liaoning Province.The area is about 40km².The research area is distributed in a north-north-east direction and is divided into three mining areas:Beitazi-Daqingshan mining area,Xiaodianzi-Naimanzhangzi mining area,Huajiyingzi-Taijiyingzi mining area,with six exploration areas under its jurisdiction:Beitazi exploration area,Daqingshan exploration area,Xiaodianzi exploration area,Naimanzhangzi exploration area,Huajiyingzi exploration area and Taijiyingzi exploration area.In this paper,based on borehole data,field measured profiles and test data,combined with regional geological structure,the oil shale characteristics,oil shale distribution law,resource potential and development and utilization optimization in this area were studied.The oil shale in the study area is dominated by black,dark brown,and dark brown.It has a lamellar structure,developed shale,massive structure,with horizontal bedding,containing fossilized fossils,and has star-shaped pyrite inside.The oil shale in the study area is an oil shale with medium and low grade,high ash content,medium and low sulfur,and medium and high calorific value.The oil content,thickness,burial depth and number of ore layers gradually increase from both sides to the middle.The kerogen types of oil shale in the study area are type?and?₁,and the maturity is in the immature-low maturity stage.Through profile measurement and data analysis,it is believed that the Jiufotang Formation in the study area developed two sedimentary facies,namely delta facies and lacustrine facies,which can be further divided into delta front subfacies,shallow lake subfacies,and semi-deep lake-deep lake subfacies and six microphases.In the study area,Surpac software was used for resource calculation.The oil shale resources in Beitazi-Daqingshan mining area are 89466.02×10⁴t,and the converted oil shale resources are 4399.33×10⁴t;the oil shale resources in Xiaodianzi-Naimanzhangzi mining area are 16155.44×10⁴t,and the converted oil shale resources are 899.28×10⁴t;Huajiyingzi-Taijiyingzi mining area oil shale resource are 15534.13×10⁴t,and the converted oil shale resources are 833.46×10⁴t.In the study area,average oil content,average thickness,average burial depth,average dip angle,oil shale resources,oil shale oil resources,oil shale resource abundance,oil shale oil resource abundance,recyclable oil shale Oil resources are used as parameters.By normalizing the different parameters,each ore layer of the three mining areas is ranked respectively.The top two high-quality ore layers are selected,and then the six ore layers selected are ranked.The top three are finally selected.The famous ore layers are BT6,BT4 and XN6,and three types of favorable areas are divided for BT6 ore layer.The oil shale in this area can be used for refining shale oil,combustion and power generation.Compared with North American shale,the oil shale ash is enriched in Fe₂O₃ and CaO,and can be used in agriculture and industrial fields.The trace element cesium?Cs?is very enriched,and the cesium element can be used in a variety of highly sophisticated fields.