This paper presents how streamline technology in combination with conventional water injection management indicators was used to effectively manage water injection in a giant field. Describing the relationship between injectors and producers is obtained from a streamline simulation model. Adjusting injection requirements only, based on well streamline injection efficiencies, is not possible for all regions of the reservoir since a good history-match is not always achieved in all regions, particularly for a giant simulation model with 520 producers and 160 injectors. Thus, conventional water injection management indicators like injection/production ratio(IPR) target per segment, reservoir pressure distribution and maximum water injection plant facilities should be taken into consideration to distribute the water efficiently.

The new proposed methodology, through an iterative process, links the streamline simulation results to the practical aspects of conventional peripheral water injection management considering water injection facilities constraints and routine reservoir performance metrics. The new approach improves injection efficiency for all segments simultaneously in a single run. We have accounted for redistributing water injection among several segments connected to a single/multiple water injection plants (WIPs). Results indicated that a similar oil production rate can be obtained through optimization. The main benefit is that water injection is managed more effectively with the excess amount of water not injected in a particular month or quarter, could be transferred and injected into other fields.

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