The successful application of sand-consolidation treatments is, for a major portion, dependent on correct fluid placement of the consolidation material. It is crucial to achieve a uniform placement of the material and, therefore, techniques are needed to overcome natural or artificially created heterogeneities. Diversion methods such as foams are being used frequently. However, fluid-placement verification of these treatments is rare.

This paper discusses the placement of a novel sand-consolidation material using a foam diverter and the verification of the placement by using distributed temperature sensing (DTS). Two case histories are analyzed in detail and used for illustration. In both case histories, foam was used to place the sand-consolidation material in multilayer reservoirs, and DTS was used to verify the placement in real-time. Qualitative and quantitative fluid placement information was derived in both cases.

From the DTS data, the parts of the formation that were treated could be identified in both case histories. In one case history, recently placed hydraulic fractures were identified and were treated. In the other case, reservoir-pressure variations were determined and identified to be the reason for preferential fluid placement and diversion over time. The lessons learned from the case histories will lead to further improvement of fluid placement.

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