When a gas field is discovered, the gas condensate is often in a gaseous
single-phase state in the reservoir under pressures and at temperatures
which are higher the greater the depth. During operation, the pressure drop
in the repository results in liquid deposits in both the repository and
surface facilities. These liquid deposits are composed for the most part of
heavy constituents of great importance for the producer. They are usually
unrecoverable. For this, we carry out a thermodynamic study, called the PVT
study, the object of our current work concerning the condensate gas coming
from a newly discovered deposit in southern Algeria. A series of
experiments was carried out, making it possible to experimentally determine
physical-chemical and thermodynamic properties. A GPC analysis was then
performed to determine the gas condensate composition under study.