Abstract
Taking into consideration time and dimensional relationships suited to geological data, scientific examinations of reservoir engineering, thermodynamical and geochemical boundary problems are dealt with. Based on Hungarian and international observations, it is assumed that due to the presence of hydrocarbons an increased precipitation and clogging take place in the boundary zones of hydrocarbon and water systems. This phenomenon is proved by static and dynamic model tests as well as by thermodynamic examinations. This phenomenon can be explained by the diffusion of CO 2, which is a common component of hydrocarbon and water that are immiscible with each other, and by the formation of an apparent extraction process. In the course of geologic ages, this phenomenon takes place even at very small concentration differences and has an influence on the formation of the full ionic mixture system.
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