Analysis of the Formation Mechanism of Upper Paleozoic Clastic Rock Reservoir in the Southeastern Ordos Basin
Keywords:Upper Paleozoic, Clastic Reservoir, Formation Mechanism, Ordos Basin.
The formation mechanism of clastic reservoirs in the Upper paleozoic in southeastern Ordos basin is systematically studied by using a large number of rock and mineral analysis and testing data. It is pointed out that the sedimentary environment, petrological characteristics, burial diagenesis, abnormally high fluid pressure and medium environment of salt lake water are the formation mechanisms that control the diagenetic evolution and reservoir property of the reservoirs. And it is put forward that the main reservoir space for the high efficiency reservoirs of sandstone in the upper paleozoic of the Ordos basin includes various types of denudation pores and residual intergranular pores, and that the plastic particle content and particle size in the detrital component of the reservoir are the important mechanisms for the formation of the reservoir.
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