Browsing by Subject "hydrocarbon fields"

Now showing 1 - 1 of 1

Access status: Open Access ,
Peculiarities of hydrocarbon systems of Ukrainian fields
(2008) Fedišin, Volodimir; Bahnûk, Mihajlo
On the territory of Ukraine within Dniepro-Donets depression a number of oil and gas condensate pools with atypical for them properties has been revealed. These are hydrocarbon formation fluids of transitional state with initial gas content over 800-1000 m3/m3 in oils or content of fraction C5+ in gas over 1000 cm3/m3. Under such conditions it becomes complicated to define pool type (phase state), since well-known numerical classifications with the use of different physical-chemical characteristics and their ratio turn out to be ineffective. In particular, the formation hydrocarbons of Sary field horizon V-18 simultaneously have the indications typical for oil and condensates. Phase state of such formation systems can be established only during special thermodynamic investigations in installations of phase equilibrium under condition that liquid-gas ratio in production of wells is properly measured. Even, insignificant deviations in the value of this ratio lead to phase equilibrium displacement in experiments and errors in determination of formation hydrocarbon fluid type.