Formation gas composition changing during Yen-Yakhinsky OGCF development for the depletion of reservoir energy

The results of a comprehensive analysis are shown on the parameters of the operational gas-condensate well stock on Yen-Yakhinsky oil gas condensate field, which is under development for the depletion of reservoir energy. Demonstrated are the peculiarities of the composition changing of the formation gas, the amount and potential content of C5+В components in the extracted products necessary for planning and production of hydrocarbons, also for adjustments in the design documents.
Materials and methods
Separation gas, gas condensate, formation gas; comprehensive field and laboratory surveys of gas condensate.
Results
As a result of a comprehensive analysis of the field and laboratory surveys’ data a short-term forecast was made on the compositionof the formation gas on Yen-Yakhinsky oil gas condensate field, which is necessary to plan hydrocarbon production.
Сonclusions
The current state of Yen-Yakhinsky oil gas condensate field development requires an adjustment in the design documents for the rational additional development of the field.