--> Abstract: Main Geological Characteristics and Resource of Oil Shale and Its Development in Northwest China, by Bai Yunlai; #90124 (2011)
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AAPG ANNUAL CONFERENCE AND EXHIBITION
Making the Next Giant Leap in Geosciences
April 10-13, 2011, Houston, Texas, USA

Main Geological Characteristics and Resource of Previous HitOilNext Hit Previous HitShaleNext Hit and Its Development in Northwest China

Bai Yunlai1

(1) NWGI, Lanzhou, China.

With the amount of Previous HitoilNext Hit resources becoming increasingly scarce, non-conventional resources such as Previous HitoilNext Hit Previous HitshaleNext Hit, Previous HitoilNext Hit sands, and heavy Previous HitoilNext Hit, have caught redoubled attention. There are abundant Previous HitoilNext Hit Previous HitshaleNext Hit resources in Northwest China, which have been preliminary researched in this study. My analysis of field geological section surveys, standard mining investigations, and the laboratory analysis of the important samples indicate that the Previous HitoilNext Hit Previous HitshaleNext Hit in northwest China has the following features: 1) 1- 36m thick Previous HitoilNext Hit Previous HitshaleNext Hit strata existed in the area.2) the color of Previous HitoilNext Hit Previous HitshaleNext Hit is mostly the brown-black, black, but the color of some Previous HitoilNext Hit Previous HitshaleNext Hit outcrops is maroon. Previous HitOilNext Hit Previous HitshaleNext Hit has slightly grease shiny and flaky, layered structure, irregular shape- conchoidal fracture, small hardness and light brown streak. 3) in hand specimen, Previous HitoilNext Hit Previous HitshaleNext Hit is mainly composed of clay mineral and silt-sized detrital minerals (quartz). 4) the main chemical components of Previous HitoilNext Hit Previous HitshaleNext Hit are SiO2 and Al2O3which total 65.44% of the rock, indicate that the Previous HitshaleNext Hit is the medium ash type. The organic carbon of Previous HitoilNext Hit Previous HitshaleNext Hit is 14% and total carbon 16.28%, Previous HitoilNext Hit yield generally 1.5%-13.7%, for an overall caloric value of 1.66-20.98MJ/kg. The density of the Previous HitshaleNext Hit is 1.55-2.46 g/cc . Younger Previous HitoilNext Hit Previous HitshaleNext Hit strata have progressively higher REE abundances. 5) Previous HitoilNext Hit Previous HitshaleNext Hit deposits are mainly 3 types: the littoral-neritic facies sedimentary deposits in the middle and late Carboniferous - the early Permian, lake bay-lacustrine facies sedimentary deposits in the late Permian, and inland lacustrine-delta facies sedimentary deposits in Mesozoic. Previous HitOilNext Hit shales which were formed in inland deep water - half deep water lacustrine facies in Mesozoic is the major industry type and its origin is similar to “the Black Sea model.” Previous HitOilNext Hit shales which were formed in deltaic environments in the middle and late Carboniferous and Jurassic are mostly paragenetically related to coal beds. 6) in the area, the total amount of predicted resources of Previous HitoilNext Hit Previous HitshaleNext Hit at least 30000× 108 t which equivalents to about 2100× 108 t of Previous HitshaleNext Hit Previous HitoilNext Hit and in which Previous HitoilNext Hit Previous HitshaleNext Hit resources in Ordos basin accounts for 99% and can be compared to Previous HitoilNext Hit Previous HitshaleNext Hit resources in Green River area of western North American. 7) in northwest China , identified Previous HitoilNext Hit Previous HitshaleTop deposits are located in the vicinity of large and medium-sized cities, with good development prospects .