Based on the data of core, well log, mud log and regional geology, the different type of sandbody was studied quantitatively on the northern Putaohua reservoir in Songliao basin by using the following indicators, they are average thickness, thickness standard deviation, thickness skewness, thickness peakedness, width, width to thickness ratio, length, length to thickness ratio, channel divaricating angle α, channel divaricating normal angle β. And then the sandbody distribution characteristics for different sedimentary face were studied in detail.
By observing rock thin sections, starting from the analysis on rock samples, mercury injection curves, casting thin sections and scanning electron microscopy, a detailed study of under Jurassic Badaowan Formation of the North Lake Oilfield heterogeneity in terms of content is done for the prediction and evaluation of favorable reservoir.
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