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一、储集层概况 八区下乌尔禾组储集层为一套棕褐色——灰绿色的细粒小砾岩、不等粒砾岩夹薄层砾状砂岩的山麓冲积——洪积相夹山麓河流相的快速堆积物。胶结致密——坚硬,分选较差,低渗透性,空气渗透率变化在0.01～1.2毫达西之间。绝大部分都小于1毫达西。比克拉玛依油田其它储集层的渗透性低53.5～450倍。孔隙度变化在7.9～16.8％之间,比克拉玛依油田其它储集层孔隙度低1.47～1.91倍(表1)。整个下乌尔禾组的沉积厚度变化在110.5～815米之间。由西北向东南逐渐加厚。
I. Reservoir Profile The Wuerhe Formation reservoir in the eight districts is a set of sepia-grayish green fine conglomerate. The unequal gravelly conglomerate contains the alluvial-alluvial-alluvial- Flock of foothills rapid deposition of river facies. Cemented dense - hard, poor sorting, low permeability, air permeability changes in the 0.01 to 1.2 millidarcy between. Most are less than 1 millidarcy. The permeability of other reservoirs in the Bklamay Oilfield is 53.5-450 times lower. The porosity changes range from 7.9 to 16.8%, with porosity of 1.47 to 1.91 times lower than that of other reservoirs in the Karamay Oilfield (Table 1). The sediment thickness of the whole Lower Wuerhe Formation varied from 110.5 to 815 meters. From northwest to southeast gradually thickening.