The first phase of development of the viscous oil resources of Kuwait is planned to be delivered through cyclic steam and steam flood technology. A pilot plan to ensure optimum utilization of the injected heat and maximizing recovery from this resource is under implementation. The reservoir is layered and the level of communication between the zones is not fully understood. Careful planning in completion is needed in this complex reservoir, to obtain meaningful information for interpretation of the pilot results. The present study summarizes the methodology used to address this challenge.

The complex layered nature of the reservoir along with possible free gas pockets poses serious challenge for the completion strategy. In this study, simulation history matching of the dynamic test data from the ongoing thermal and non-thermal pilots was used to interrogate the preliminary static description. The process resulted in an improved and reliable dynamic model, which was then used in the prediction mode, for deciding on an optimum completion strategy for the later steam flood phase.

The study recommended Vertical Expansion Steaming and simultaneous steaming strategies to be used in different pilot areas. The nature of the "baffle" zones between the oil bearing zones and their flow property under steam flood is considered an unknown factor, which needs careful evaluation in the pilots. The proposed well completion scheme is designed to address this subject.

The study summarizes how the planned completion study would be used to interpret and utilize the pilot performance data, for optimizing cost and reserves of the commercial project. The different completion options that were evaluated in the study and their results should provide valuable knowledge for application in similar EOR projects.

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