西峰油田长8储层砂岩成岩作用及对孔隙影响

Abstract

Abstract: Based on the analysis of thin-section, casting lamella, scanning electron microscope,X-ray diffractions and so on，the characteristic of petrology and the diagenesis of Chang-8 reservoir in Xifeng oilfield in the Ordos Basin was summarized. The result shows that both feldspathic litharenite and lithic arkose are the essential components of Chang-8 sandstone. The diagenesis is in the early A period of the late diagenesis stage. The compaction in the early stage and a number of minerals’ cementation lead the loss of primary porosity, the dissolution is the main diagenesis to form second porosity.

Key words: Xifeng oilfield, diagenesis, porosity

CLC Number:

P618.13

YU Bo，CUI Zhi-lin，LIU Xue-gang，QIAN Li-dan，BAI Chang-e，ZHU Tao. The Diagenesis of Chang-8 Reservoir Sandstone and Its Effect on Porosity in Xifeng Oilfield[J].J4, 2008, 38(3): 405-0410.

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The Diagenesis of Chang-8 Reservoir Sandstone and Its Effect on Porosity in Xifeng Oilfield