Near Well Simulations Of Heavy Oil Production
With ICD Completion
Author(s)
F. S. Moghaddam, R. Aryal, H. Aakre & B. M. Halvorsen
Abstract
Heavy oil reservoirs have been proven to be remarkable energy resources due to
the high demand in today’s oil market. Therefore, increased oil recovery is an
essential requirement in fulfilling global energy demand. Oil viscosity is a key
factor in determining the rate of production from heavy oil reservoirs. Long
horizontal wells are used to obtain maximum reservoir contact. Due to frictional
pressure drop along the long well, the driving forces are different from one
location to another in the well – this is called the heel-toe effect. In a
homogeneous reservoir the oil production rate will be significantly higher in the
heel than in the toe, and this will lead to early water or gas breakthrough in the
heel. In heterogeneous reservoirs, early breakthrough will occur in the high
permeability zones due to low flow resistance in the reservoir. Horizontal wells
with passive Inflow Control Devices (ICDs) have shown improved performance
in terms of oil production from lateral thin reservoirs. Different types of ICDs
are developed to delay the early breakthrough by restricting the flow. The focus
area of this paper is the production of heavy oil from a reservoir with water drive
and standard nozzle ICD completion. Heavy oil production from a homogeneous
reservoir with different viscosities is simulated. Breakthrough time and
cumulative oil production is compared. In addition, the effect of ICDs in a
heterogeneous reservoir is studied. The results show that standard nozzle ICDs
delay the water breakthrough, but are not able to choke the water after
breakthrough. The near well simulations are performed with the reservoir model
Rocx in combination with OLGA. Tecplot is used to show the flow behaviour in
the reservoir.
Keywords: increased oil recovery, ICD, heavy oil, homogeneous/heterogeneous
reservoir.
Keywords
Keywords: increased oil recovery, ICD, heavy oil, homogeneous/heterogeneousreservoir.
Related Book
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