MATHEMATICAL MODELING OF IMPACT ON BAZHENOV FORMATION CONSIDERING PHASE TRANSITIONS
In recent years very close attention was paid to the problem of the development methods of research of Bazhenov formation of deposits. The accumulation of knowledge about these collectors allows to build a new, more accurate mathematical model. New knowledge about reservoirs of unconventional hydrocarbons give us reason to believe that mathematical modeling show objective result successful application of innovative methods. Layers of Bazhenov formation are characterized by low porosity and permeability, heterogeneity of structure and composition, the presence of kerogen, a high degree of anisotropy and a low percentage of recoverable reserves. Thus these layers are the object of study in the search for new technologies. In new development technologies for kerogen formations there should be taken into account the need of structural changes implemented in reservoir, achievement of high pressures and temperatures corresponding to the zone of maximum generation in the phase diagram. Today, the existing methods are mainly based on methods of development for traditional oils, so there is no significant progress. The authors conducted an analysis of the current state of research low-permeability reservoirs, laboratory experiments and field data kerogen matrix dissolution. The mathematical model was created for the process of decomposition of the kerogen in the reservoir by pressure and heat waves, thermal and chemical processes.