关键词: 俄罗斯东部, 油气资源, 煤层气, 天然气水合物, 远景分析

Abstract:

Eastern  Russia is rich in oil and gas resources and has a large number of proved reserves. They are mainly involved in three types including terrigenous clastic rocks and carbonates of the Late ProterozoicEarly Paleozoic oil-gas-bearing basins in Eastern Siberia, siliceous rocks on the continental shelf of the Mesozoic-Cenozoic oil-gas-bearing basins in the Far East, and graywacke of the Middle Paleocene-Eocene oil gas bearing formation in  the coastal depressions of the far east. Furthermore, the formation ages of the oil-gas-bearing basins in the Far East become younger from west to east. They are from Jurassic, Cretaceous, to Cenozoic. The Mesozoic-Cenozoic coalbed methane basins are widespread in Eastern Russia, and among them  the Lena basin and South Yakutia basin are the two most important ones. Evolution and distribution characteristics of the coalbed methane basins are mainly controlled by the overlying and underlying stratigraphic systems, folds and faults, and metamorphism. The Sakhalin shelf, Okhotsk and the deep-water basins of the Bering Sea in Russia Far East are rich in gas hydrates. And the methane contained in the gas hydrate was generally considered to be from deep hydrocarbon reservoir; however, some experts have thought that it may come from the deep ocean outside the continental shelf.

Key words: Eastern Russia, oil and gas resources, coalbed methane, gas hydrate, perspective analysis