For the South-Eastern regions of the West Siberian oil and gas province, a model of the structure of the Bazhenov reservoir and criteria for selecting areas that are promising for detecting oil accumulations in the productive level of the South-West Bazhenov Formation are proposed. According to the our criteria, the following characteristics of the object of research are given: the thickness of rocks of the Bazhenov Formation, the thickness of rocks with a Corg content > 7%, catagenesis degree of organic matter, the thickness of the underlying and overlying fluid barriers, current reservoir temperatures of rocks and reservoir pressures in the Bazhenov Formation. Based on a comprehensive analysis of the materials that characterize the above criteria, promising zones of two categories are identified. The Central-Nyurol zone is assigned to the 1st category (the most promising), and the North-Nyurol, East-Nyurol, South-Nyurol, West-Parabel, and Ust-Tym zones are assigned to the 2nd category.
Petrophysical rock properties of the Bazhenov Formation of the South-Eastern part of Kaymysovsky Vault (Tomsk Region)
