This paper introduces a steam-sensitive flow-control device designed to restrict the production of steam and low-subcool liquids while allowing higher mobility of oil-phase fluids. By preferentially limiting flow from zones with high steam saturation or low subcool, the device helps retain steam energy within the reservoir, directs heat to colder regions, minimizes sandface erosion, and supports the growth of a more-uniform steam chamber. This paper presents the first field implementation of the featured inflow control device (ICD) in the Athabasca McMurray oil-sands reservoir, specifically within the Surmont I steam-assisted gravity drainage (SAGD) operation.
Challenges of ICD Use in SAGD Operations
At first adoption by SAGD operators, available ICDs were not designed specifically for such applications and, in some cases, were poorly suited for the operating conditions. Moreover, the modeling methods currently in use have significant limitations that hinder accurate ICD design and understanding.
