The Distribution Characteristic And Gas-oil Prospect Research Of Triassic Oil Shale In Maquan Tongchuan Area

Oil shale comprehensive exploitation and utilization is becoming increasingly valued as one kind of huge reserves unconventional energy.Maquan area locates in the southeast of Shanbei slope of Ordos basin,the northern part of the tongchuan mining area.The oil shale located at the top of Tongchuan formation,buried shallow,big thickness change.The fundamental research based on the analysis of geological,logging data and test data get the following knowledge:(1)Through the analysis of logging and drilling data compilation,named No.0,No.1,No.1 ?,No.2,No.3 respectively of five oil shale layers in study area,and No.1 oil shale is more thicker,widely distributed.(2)The result that oil shale combination logging curve recognition is “3 high and 1low” which namely the high resistivity(GR01),natural gamma(NG01),high acoustic time(SON2),low density(DENB)from the comparison of well logging data in the study area.Last,the correlation of physical parameters of resistivity,natural gamma and so on between oil content show that their relationship is closely relate,and has certain geophysical significance.(3)Several conclusions based on the analysis of industry data are as follows: the oil shale have high ash content,low volatile,low calorific value and 4-7% oil content(middle grade)in the study area,and the kerogen type is?type and ?1 type,and given priority to?1 type.(4)Estimated oil shale resources that oil content ?4% is 127.36 million tons according to the general industrial index(see "mineral resources industry manual"),and the amount of controlled economic resources(332)is 8.3 million tons,concluded economic resources(333)is 119 million 60 thousand tons.Through this study,find out the regional structure,physical characteristics,distribution,and estimate the resource that provide reliable basis for further exploration and developmen of the oil shale in Tongchuan maquan area.