Accumulation and Distribution of Natural Gas Reservoir in Volcanic Active Area: A Case Study of the Cretaceous Yingcheng Formation in the Dehui Fault Depression, Songliao Basin, NE China

Figure 11

Thin section observed by plane-polarized and light perpendicular-polarized light for tight sandstone reservoir samples for the K₁yc. (a) 2522 m, tuffaceous sandstone; (b) 2543 m, tuffaceous sandstone; (c) 2803.5 m, tuffaceous sandstone; (d) 2912.5 m, tuffaceous sandstone ((c) and (d) are referenced from [28]).

(a)

(b)

(c)

(d)