Waterflood Conformance Control in Heavy Oil, Multilayer Reservoirs

This paper presents the case history of efforts made in managing the vertical conformance in heavy oil, multi-layer reservoirs.<br>The onshore field discovered in 1985 in south Sultanate of Oman is heavily faulted, compartmentalized with multiple reservoir<br>layers of varying permeabilities. The oil is relatively heavy with average viscosity of 60-150 cp, density of 22 degree API with<br>low GOR. The waterflood was piloted in 1993 by adopting a 5 spot pattern. Full field waterflood was implemented in 1999.