Braided river sandstone reservoir characterization in Kumkol South Oilfield, South Turgai Basin

831-838The differences of remaining oil distribution between two types of braided river are studied. WCNB braided river is mainly composed of the tongue-like bars and wide channels. The width ratios of wide channels and the tongue-like bars are relatively large. And thelengthratio ofthe long axis and short axis of the tongue-like bars islarge. The mud interlayers of the tongue-like bars aslant space downstream one after one. The distribution range and the angle of the mud interlayers of tongue-like bars are large.The NCWB braided river is characterized by the narrow braided channel and oval bars. The width ratios of narrow braided channels and oval bars are small. And thelength ratio of the long axis and short axis ofthe oval bars are relatively small. The mud interlayers of the oval bars overlapspace vertically one by one. The distribution range and the angle of mud interlayer of oval bars are small