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Journal of Industrial and Environmental Chemistry | Volume 2
December 06 -07, 2018 | Dubai, UAE
Pet roleum Engineer ing, Oil and Gas
International Conference on
Joint Event
Minimizing gas flaring and enhancing condensate recovery from gas condensate reservoirs through gas
injection
Abdollah Esmaeili
Cyprus International University, Cyprus
Gas reservoirs can be classified into dry gas reservoirs,
wet gas reservoirs and gas condensate reservoirs. In
gas condensate reservoirs, the reservoir temperature lies
between the critical temperature and the cricondentherm.
The gas will drop out liquid by retrograde condensation in the
reservoir, when the pressure falls below the dew point. This
heavy part of the gas has found many application in industry
and also in daily life and by remaining in reservoir not only
this valuable liquid is lost but also its accumulation will result
in forming a condensate bank near the well bore region
which makes a considerable reduction in well productivity.
In this paper, gas injection will be studied in a gas condensate
reservoir to increase the recovery factor moreover the
capability of different injection gases (CO2, N2, CH4 and
separator gas) will be compared through different injection
schemes. The injection schemes which will be considered
are: different injection rates, different injection pressures
and different injection durations. We think that the response
of the reservoir in different cases will be different but that
injection of all of them can increase the condensate recovery.
As many parameters can affect the decision of selecting
the injection scheme, other than the gas and condensate
recovery factor, doing an economical evaluation is inevitable
to take them all into account and determine the best one.
In this paper, the efficiency of different schemes of gas injection
and gas recycling in condensate recovery froma gas condensate
reservoir, through compositional simulation has been studied
and compared. The effect of changing injection rate, injection
pressure and injection duration has been investigated by three
injection gases (N2, CO2, CH4) and gas recycling. The appropriate
and optimum case can be selected considering the results of
the simulationwork and doing an economical evaluation, taking
into account all the parameters such as: the price of the gas and
condensate, the price of the injection gases and the cost of the
facilities needed ineach schemewith regard to thepresent level.
e:
Oil & Gas 2018 &
Petroleum Engineering 2018, Volume 2
DOI: 10.4066/2591-7331-C2-006