Most of the wells in the Dzheitune(Lam)field in the Caspian Sea were completed with dual tubing.Depletion in reservoir pressure caused formation failure in the A sand reservoir,and wells producing from this formation began to produce sand.Field examples presented in the complete paper describe principles of data acquisition with a sand-detection tool when run in combination with a production logging string and results of logging in slightly deviated wells completed with sand screens.Comparison of multiphase-inflow profiles with sources of sand production showed that most sand was produced through eroded intervals in the sand screens.
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