Cyclic steam stimulation has proven to be an effective and flexible process for recovering heavy oil. However, similar to the other projects in the Bolivar Coast Field, vertical steam distribution in the Laguna reservoir is poor due to thicker pay zone divided into two different main sand bodies, an upper sand unit a lower sand unit. Difference fluid and rock properties for the lower sand have contributed to production, meanwhile, the upper sand stayed at original conditions.

This work illustrates how an interdisciplinary team can set up new approaches to a mature reservoir, in order to optimize the exploitation of heavy oil sands. This approach was within the context of areal definitions, steam soak scheduling and production forecast. It was concluded that the Laguna upper sands should be treated as an individual reservoir.

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