Flow Control Device
The Flow Control Device (FCD) is used for both optimal injection and/or production distribution control for Steam Assisted Gravity Drainage (SAGD) wells and Cyclic Steam Stimulation (CSS) wells. This can provide significant improvement on heavy oil and bitumen recovery. However, steam injection into horizontal wellbores may not always be distributed in a preferential manner (i.e. equalized along the horizontal wellbore). Proper identification of critical components of operational and reservoir parameters are required to optimize the design and injection strategy, to maximize oil recovery and reduce energy consumption, while reducing the Steam-Oil-Ratio (SOR). Other applications are optimization of solvent injection or a combination of steam-solvent injection and production wells.
Using multiple FCDs will enhance the delivery and distribution of steam into the target formation by providing the ability to selectively open and close off sections or change steam injection quantity equalized distribution along the wellbore that are equipped with sand control. This provides effective zonal isolation of steam into the formation to specific target locations within the reservoir.
Special consideration and engineering is required for FCD design under the application conditions. Experience gained and lessons learned have allowed development of the FCD for effective outflow and inflow distribution and zonal isolation. The FCD can also be equipped with sand control devices.