[250x]Those little islands are called bushes. There are oil pumps placed on them. This is a Samotlor oil field near Nizhnevartovsk. The oil deposits are on the bottom of the lake and swamp so there are many artificial islands made & Read more...

http://englishrussia.com/2018/08/25/how-russian-oil-field-on-artificial-islands-looks-like-from-above/