Abstract: The structure controlling factors of oil-gas distribution in giant petroliferous basins in West Siberian province were studied in detail by many scholars for over 50 years. M. Ya. Ludekaivich, F. G. Gulali, A. Ai. Kutelovich, et al. point out that the distribution of oilgas fields is related to the depressed areas or to uplift structural traps after neotectonic movement. The giant basins and depressions during long period of stable settlement are the areas for hydrocarbon generation, where the oil accumulations are in the mid and lower positions of the basins, while the gas ones in the margin of the basins. There exist 249 giant and large oil-gas fields in West Siberian province, with over 90% reserves of the total. The province is divided into three regionally geotectonic units, such as external belt, Yamarmi island-Kala regional depressed belt and Ebi regional terrace. The latter two units make up of the internal belt. The large and giant oil-gas fields found are all in these units. Also, these oil-gas fields and their reserves within the geotectonic units are researched in detail.

Key words: West Siberia, petroliferous basin, oil-gas field, structure control