Authors: Li, Lei & Lange, Carlos & Ma, Yongsheng.
Outflow Control Device (OCD) is applied in Steam Assisted Gravity Drainage (SAGD) to control the steam split to the formation from the injection well. The detailed analysis of OCD with CFD is desired to obtain comprehensive understanding of the flow in the device and guide design optimization. The simulation presented here is based on a commercial OCD product applied in industry. With ANSYS/CFX TM , the simulation research was carried out by phases. According to the analysis of OCD application conditions, the simulation of a small quarter domain is conducted to test the boundary conditions and the OCD flow behavior corresponding to different pressure drops. The steam distribution is believed to have an effect on the efficiency of heating. To evaluate the effect of different design on steam distribution, the simulation of half domain with different gap sizes was further processed; two parameters have been identified to quantify the steam distribution. A simulation scenario of a 360°domain is introduced at last to discover the interaction between the steam flowing through the four orifices.
