Abstract
According to comparison research for mineral composition, diagenesis and reservoir characteristics of different dispositional provenance in Jiyuan area of Ordos Basin. The results show that: the difference of rock lead to the difference of its matrix mineral composition and interstitial material composition, and its diagenesis environment and diagenesis are different. The research area can be divided into northeast area and northwest area basing on the dispositional provenance. Mineral compositions of two areas are different. For northeast area, the content of feldspar and chlorite is high, and the content of quartz, illite, kaolinite, carbonate and silicoide is low. While for northwest area, the content of feldspar and chlorite is low, and the content of quartz, illite, kaolinite, carbonate and silicoide is high. Therefore, the reservoir physical property of northeast area is high, whose compaction, pressolution and cementation is weak, and corrosion is strong. While the reservoir physical property of northwest is low, whose compaction, pressolution and cementation are strong, and corrosion is weak.
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