Inflow control devices (ICD) are a relatively new type of completion component which are used in a wide range of wells.<br>The ICD introduces a small controlled pressure drop which is used to modify the inflow profile from the formation into the<br>completion. When combined with effective zonal isolation this modification of inflow has a number of benefits. It promotes<br>an even inflow and removes the tendency for a high flux at the heel of the well. It also reduces the flux from highly<br>permeable zones such as fractures. Both these benefits reduce the tendency for premature water or gas production and<br>increase the oil recovery.


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