The reservoir space of Medium-deep portion sandstone is mainly secondary pores.Its distribution is heterogeneity in vertically and horizontally.The humic acids which come into being at the mature stage of organic matter control and influence secondary pores distribution.In this paper
the data of microscope
the scanning electronic analysis
cathodoluminescence
petrophysical property and carbonate content are presented
the favorable secondary pores-developed area is predicted.The favorable pores-developed area is located at the intermediate belt between Jingzhou anticlinal belt and south generative sag.The research provides evidence for the evaluation of reservoir.
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