We have analyzed the predictions of the petroleum potential of West Siberia made by Academician I.M. Gubkin in his public reports and scientific works. We outline the strategy of oil exploration in the area east of the Urals, set up in the early postwar period, and the current state of research into the petroleum potential of the province. Special attention is focused on Jurassic deposits, which were regarded by I.M. Gubkin as oil-promising. At present, the largest volumes of predicted oil and gas resources of the province are concentrated in Jurassic and Neocomian plays.