It is now a standard practice to equip production strings of offshore wells with SC-SSV's. Although there are no rules concerning the use of Down Hole Safety Valves in an annulus submitted to gas injection for gas lift purpose, concerns have been raised about the availability and implementation of such equipment.

This paper reviews the experience of T.CFP in Down Hole Annular Safety Valves that started 8 years ago. It covers the field experience of Annular Safety Valves in single and dual completion.

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