سال انتشار: ۱۳۸۵

محل انتشار: اولین کنگره مهندسی نفت ایران

تعداد صفحات: ۱۱

نویسنده(ها):

Arsalan Zolfaghari – M.S. student of Sharif University of Technology, MAPSA Company
Shahab Ayatollahi – Associated Professor of Shiraz University

چکیده:

Gas-condensate reservoirs exhibit complex phase and flow behaviors due to the appearance of condensate banking in
the near well region and changing composition of each phase dynamically. A good understanding of the effect of the
gas composition on the flow and phase behavior properties of these reservoirs is essential for carrying out accurate
forecasts of gas condensate reservoirs behavior using numerical simulators.
Natural production from these reservoirs leads to pressure drop of the reservoir which results in gas condensation and
liquid dropout in the reservoir. The phenomenon exhibits itself in the vicinity of the wellbore first and then propagates
in a cylindrical form to the reservoir volume. The most important effect of liquid condensation is the reduction of gas
relative permeability and as the result the loss of production.
A new compositional technique is used here to investigate the gas composition effects on the calculated relative
permeability and hence the gas production.