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Abstract

Summary

This paper presents a new streamline-based workflow to cover the two main aspects of waterflood management optimisation: infill drilling well location identification and injection rate allocation. Streamline properties are used in every step of the evaluation and decision-making process in the workflow. A novel ranking scheme, weighted by streamline ‘remaining mobile oil in pattern’, is developed in this study. The well ranking criteria are not only based on the properties of individual well completion cells as in a traditional quality map, but also account for connectivity between injector/producer pairs. In such a way, candidate producers at high-quality map locations, but with poor connectivity or limited swept area, can be screened out. The other main component of the workflow is to perform dynamic pattern injection reallocation in response to the changed well pattern resulting from newly introduced producers. A unique insight for utilization of a multi-zone waterflood for a vertically heterogeneous field is also provided.

2D and 3D heterogeneous models were used to develop and validate the workflow for its general implementation on real field models. The final oil recovery and net present value (NPV) analysis show that the oil recovery can be increased significantly compared to traditional optimisation methods.

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/content/papers/10.3997/2214-4609.201600759
2016-05-31
2020-08-12
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References

  1. Taware, S., Park, K., Datta-Gupta, A., Bhattacharya, S., Tomar, A. K., Kumar, M. and Rao, H. S.
    [2012] Well Placement Optimisation in a Mature Carbonate Waterflood Using Streamline-Based Quality Maps. Paper SPE 155055 Presented at the SPE Oil and Gas India Conference and Exhibition, Mumbai, March.
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  3. Thiele, M. and Batycky, R.
    [2006] Using Streamline-Derived Injection Efficiencies for Improved Waterflood Management. SPE Reservoir Evaluation & Engineering9 (2): 187–196.
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