Overview of Lower Cretaceous Achimov Formation: Physical Properties and Their Distribution Pattern in West Siberian Basin, Russia

Figure 4

Textures of Achimov Formation reservoir rocks (after [14]): (a) interbed of fine-grained sandstone and shale from Well 822; (b) interbed of aleurolite and shale from Well 410; (c) parallel bedding of a sample from Well 822; (d) cross bedding of a sample from Well 426.

(a)

(b)

(c)

(d)