The Effect of Exclusive Drawdown To The Reservoir Productivity And Petrophysical Properties Using Numerical Study

Overpressure or exclusive drawdown is one of the most common causes of
failure in onshore and offshore industries. Exclusive drawdown refers to the excessive
production occurred in the reservoir due to large difference of reservoir pressure and
flowing bottom hole pressure. It is difficult to predict its occurrence as well as to prevent
it. One of the solution is by having a good information about the well regarding the
inflow pressure, outflow pressure, the expected production rate and the fluid properties
of the reservoir. There are a lot of harm consequences that may happen due to exclusive
drawdown that result in production decline. Thus, the projective objective is to do
numerical simulation analysis as the effect of having exlusice/excessive productivity to
the reservoir and petrophysical properties. The analysis will be focusing on the pressure
drawdown itself. Scope of study involved conducting the simulation of software include
the visual inspection and well test result by using Pansystem Software to measure the
production rate and inflow performance relationship by making comparison of having
optimum drawdown and exclusive drawdown. This study is very important to be
conducted to ensure the reservoir can last long and meet the expected lifetime.