Sedimentary model reconstruction and exploration significance of Permian He 8 Member in Ordos Basin, NW China

XIAO Hongping,LIU Rui’e,ZHANG Fudong,LIN Changsong,ZHANG Mengyuan

Fig. 3. Sedimentary structural characteristics of sandstone, conglomerate and mudstone cores of He 8 Member in Ordos area. (a) Well LA54 (south-central area), 3 952.90 m, grayish quartz medium-coarse sandstone, massive bedding; (b) Well LI4 (northern area), 3952.90 m, grayish medium-coarse quartz sandstone, massive bedding; (c) Well HT1 (south-central area), No. 5-38/57 core, light gray medium sandstone, parallel bedding; (d) Well S7 (northern area), No. 1-123/124 core, light gray gravel-bearing sandstone, massive bedding; (e) Well SH113 (south-central area), No. 2-203/125 core, light gray gravel-bearing sandstone, massive bedding; (f) Well HT2 (south-central area), 3 892.96 m, grayish green mudstone, mudstone with reddish brown shale gobbets.