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Study of the Resrvoir Conditions of Deposition and Accumulation of Carboniferous-Permian in Linqin Depression

Author: MengZhaoLei
Tutor: LiZengXue
School: Shandong University of Science and Technology
Course: Mineral prospecting and exploration
Keywords: Linqing Depression Carboniferous - Permian Reservoir properties Forming conditions
CLC: P618.13
Type: Master's thesis
Year: 2010
Downloads: 95
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Abstract


In this paper, sedimentology, petrology, paleontology to historians , geochemistry, structural geology , logging geology and other multi-disciplinary research approach that combines X- diffraction , rock thin sections , scanning electron microscopy and other relevant experimental methods and means , a detailed study of the Bohai Bay Basin Linqing Depression Carboniferous - Permian sedimentary features, analysis of coal into a gas reservoir characteristics and spatial exhibition bout point , summed coal-formed gas accumulation conditions , prepared for the area of oil and gas exploration solid foundation. Specific results are as follows : The effect of Linqing Depression Late Paleozoic sedimentary environment and depositional system, identified five major depositional systems , namely: the tidal flat sedimentary system, barrier - lagoon depositional system, delta system , rivers, lakes and coastal sedimentary system without barrier coastal sedimentary systems ; Linqing Depression late Permian may exist coastal deposition ; Linqing Depression Shihezi formation in glauconite and other marine indicator minerals , its paleontological study also found that gastropods and tongue shaped shell fossils, sedimentary sandstone combine characteristics Kuishan analysis reveals that the area Shihezi marine sedimentary depositional environment for the environment ; based thin section analysis , electron microscopy , cast thin section analysis of such information , the study area Paleozoic reservoir layer mainly low porosity and low permeability to extra-low permeability sandstone reservoir Conte , the spatial types are mainly intergranular dissolved pores ; poor reservoir properties . Linqing Depression focuses on the spatial distribution of reservoirs in the eastern region , found in its thick thin in the middle on both sides of the east and in the eastern region a favorable reservoir area ; study the coal-bearing strata and mudstone area of hydrocarbon potential . Come to the area coal gas main types of organic matter type Ⅲ kerogen , individual regions have Ⅱ, Ⅰ type ; to vitrinite reflectance of the region studied thermal evolution model . Considered in Linqing Depression Paleozoic Carboniferous - Permian thermal evolution similar burial depth and the geothermal field has similar characteristics and thermal evolution history .

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CLC: > Astronomy,Earth Sciences > Geology > Of ore deposits > Deposit classification > Fuel deposits > Oil, natural gas
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