Summary
The Mukhaizna heavy-oil field in the Sultanate of Oman desert has three distinct zones that require steam injection to enhance oil recovery. A new, geocellular-based reservoir description was prepared to evaluate the steamflood performance of these three zones using different horizontal- and vertical-well configurations. On the basis of the results of thermal simulations, the final design called for vertical wells injecting steam into all three zones, with three stacked horizontal production (HP) wells, one for each zone. One advantage of this design is the ability to control the steam flux from each vertical injector (VI) into each zone to mitigate early steam breakthrough and optimize recovery. After 2 years of steam injection, oil production is tracking the thermal model nicely.
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