Visco-Elastic Surfactant systems as Drill-in Fluids (DIFs-fluids used to drill the reservoir)

I am looking for data/case histories or applications where a Visco-Elastic Surfactant (VES) was used or planned as a drill-in fluid. I would like to know specifically what the application was and why a VES system was used, or considered in this application. Thanks for any help or advice. Cheers
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