The Carboniferous Kalashayi Formation in the Tahe Oilfield occurs as lenticular channel facies of sandstones interbedded between the overbank mudstones of Members K3 and K4.

• 摘要塔河油田卡拉沙依组河道相砂岩油层夹于卡三段和卡四段的氾滥平原泥岩中，小层对比时缺乏时间-岩性标志层。