| Abstrakt: |
The visean oil fields in the northern part of the Perm region are characterized by the development of reservoir bituminization, which reduces the efficiency of their development by standard methods. Using the example of 4 typical deposits, the dependence of the bituminous reservoirs on the depth of occurrence, electric logging data and porosity is considered. Step by step linear discriminant analysis was applied to solve this problem. As a result, based on the analysis of a complex of geological characteristics, a high percentage of recognition of bituminous objects was obtained. Further, according to the developed methodology, a complex criterion for the probability of bituminization was calculated. An analysis of the constructed predictive models made it possible to determine that the bitumens are formed in the lower sections of the section, have lower porosity and values according to the micro-lateral logging method. The developed probabilistic criterion for the territory under consideration can be used in assessing the presence of bitumen. [ABSTRACT FROM AUTHOR] |
